BASANIA HEP_PFR - Ministry of Power

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Foreword 

Preliminary Feasibility Report 

Basania HE Project 3 X 30 MW 

With the growing demand for power day by day, be it for industrial growth or 

infrastructure development, for a sustainable growth of our country, Hydropower has a 

very essential role to play in the days to come. All other resources for power being 

exhaustible, gradually depleting and at times hazardous, the hydropower offers a 

wonderful alternative for which resources are inexhaustible and environment friendly. 

Although India has hydropower generation history of more than 100 years, it has 

contributed only about 25% to the total power scenario of the country tapping 26,910 

MW of its total identified hydropower potential of 84,044 MW, till date. Looking at the 

future demand, it has become imperative to tap this vast hydropower potential Hon’ble 

Prime Minister Shri A.B. Vajpayee has taken a giant step by launching “50,000 MW 

Hydroelectric Initiative” in May 2003, to accomplish the goal by XI th Plan and beyond. 

This will put the country on the faster track to progress. 

NHPC feels honoured to be associated with this venture which intends to create 

a shelf of Pre-feasibility Reports (PFRs) of 162 projects by September, 2004 for taking 

up their phase-wise implementation. NHPC is entrusted with the responsibility of 

preparation of 43 PFRs with a likely capacity addition of 21,345 MW. The entire work of 

preparation of PFRs is being carried out by in-house team of experts in NHPC. After 

scrutiny by various departments of CEA/ CWC, Basania HE Project (90 MW) prepared 

by us, earns the unique distinction of being first PFR to be located in the Narmada 

Basin. 

We are thankful to the CEA and Ministry of Power for reposing their faith on us 

and offering this unique opportunity to be a part of this noble initiative and we promise 

to put up our best effort to achieve the objective as set by our Hon’ble Prime Minister. 

We, also, take this opportunity to offer our sincere gratefulness to MOP, MOD and all 

the Departments and Organisations viz. CEA, CWC, GSI, IMD, SOI, NRSA, NVDA, ZSI 

and various Departments of government of Madhya Pradesh for lending their kind co- 

operation in completing this task. 

Faridabad (Yogendra Prasad) 

29.01.2004 Chairman & Managing Director 

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TABLE OF CONTENTS 

CHAPTER DETAILS 

CHAPTER I 

CHAPTER II 

CHAPTER III 

CHAPTER IV 

CHAPTER V 

CHAPTER VI 

CHAPTER VII 

CHAPTER VIII 

CHAPTER IX 

CHAPTER X 

CHAPTER XI 

CHAPTER XII 

CHAPTER XIII 

Summary 

Background information 

Project Area 

Topographic & Geo-Technical Aspects 

Hydrology 

Conceptual Layout and Planning 

Power Potential Studies 

Power Evacuation 

Environmental Aspects 

Infrastructure 

Construction Planning & Schedule 

Cost Estimates 

Economic Evaluation 

APPENDICES 



PAGE NO. 

1 – 4 

5 – 8 

9 – 15 

16 – 21 

22 – 29 

30 – 35 

36 – 39 

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40 

41 – 60 

61 

62 – 64 

65 – 68 

69 - 71



CHAPTER TABLE NO. 

CHAPTER III 

3.1 

3.2 

CHAPTER IV 4.1 

CHAPTER V 

CHAPTER VII 

CHAPTER IX 

5.1 

5.2 

5.3 

5.4 

5.5 

LIST OF TABLES 



TITLE 

Selected Socio-Economic Indicators of 

Madhya Pradesh and All India 

Socio-Economics Data of Affected 

Villages 

Strategraphic Sequence of Lava Pile 

Classification Group 

Monthly Maximum, Minimum & Average 

Air Temperature 

Station Wise Mean Monthly Relative 

Humidity in Percentage (Morning & 

Evening) 

Monthly and Annual Rainfall in Mandla 

District 

Station Wise Mean Monthly Wind Speed 

in K.M. per House 

Monthly Potential Evapo-transpiration at 

Manot 

5.6 Sedimentation Rate 

7.1 Discharge data 

7.2 

90% Dependable and 50% Dependable 

Year flows for Power Generation 

7.3 Reservoir Operation Report 

7.4 Reservoir Operation Study 

7.5 Power Potential in 90% Dependable Year 

9.1 

9.2 

9.3 

9.4 

Maximum and Minimum Temperature 

from Year 1999 to 2002 

Landuse/ Landcover Categories of the 

Submergence Area 

Landuse/ Landcover Categories of the 

Area falling within 7 km Radius of the 

Proposed Dam. 

Major Floral Species in the project area 

and catchment area. 

9.5 Forest Quality of Mandla District 

9.6 

Major Faunal Species in Project Area and 

Catchment 

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CHAPTER XIII 





9.7 Fish Species Reported in River Narmada 

9.8 Water Quality of Burhner River at Manot 

9.9 

Water Quality of Burhner River at 

Mohgaon 

13.1 Phasing of Expenditure 

13.2 

13.3 

13.4 

13.5 

13.6 

IDC Calculation at Present Day Cost 

(June 2003 level) 

Unit Cost of energy at Bus Bar at Current 

Price Level (with 12% free power) 

Unit Cost of energy at Bus Bar at Current 

Price Level (without 12% free power) 

Calculation of Energy Rate with Present 

Day Cost (June 2003 Price Level) As per 

tariff notification (with 12% free power) 

Calculation of Energy Rate with Present 

Day Cost (June 2003 Price Level) As per 

tariff notification (without 12% free power) 

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CHAPTER PLATE NO. 

CHAPTER II 

LIST OF PLATES 

2.1 Narmada Index Plan 



TITLE 

2.2 Line diagram of Narmada Basin 

2.3 L-section of Narmada River 

CHAPTER IV 4.1 Geological Plan 

CHAPTER V 5.1 

CHAPTER VI 

Catchment Plan of River Narmada up to 

Basania 

6.1 Vicinity Map 

6.2 Location Plan 

6.3 General Layout Plan 

6.4 Concrete Dam U/s Elevation 

6.5 

Concrete Dam Overflow & Non Overflow 

Sections 

6.6 Earthen Dam Cross Section 

6.7 Power Dam Cross Section 

CHAPTER VII 8.1 Single Line Diagram 

CHAPTER 

CHAPTER V 

LIST OF FIGURES 

FIGURE NO. 

5.1 

TITLE 

Reservoir Elevation Area Capacity 

Curve 

5.2 Atmospheric Temperature 

5.3 Monthly Rainfall in Mandla District 

5.4 

Average 10 Daily Flows at Dam Site 

Basania 

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CHAPTER ANNEXURE 

LIST OF ANNEXURES 

CHAPTER I 1.1 Salient Features 

CHAPTER V 



TITLE 

5.1 Hydro Meteorological Data Status 

5.2 

5.3 

5.4 

5.5 

CHAPTER VII 7.1/9 - 7.9/9 

CHAPTER VIII 8.1 

CHAPTER IX 

Annual computed ‘Runoff Series at 

Basania 

Average 10-Daily Discharge at Manot 

G&D site 

Average 10-Daily Discharge at 

Mohgaon G&D site 

Average 10-Daily Discharge at 

Basania Proposed Dam Site 

Reservoir Operation study (from 1989 

to 1998) 

MPSEB letter no. 04-01/PSP/ 6834 

dated 24.9.2003 alongwith enclosures. 

11.1 Stage I & Stage II Schedule 

11.2 Construction Schedule 

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APPENDIX TITLE 

LIST OF APPENDIX 

APPENDIX -I Preliminary Cost Estimate 

APPENDIX-II Plates 

APPENDIX-III Ranking Study by CEA 



APPENDIX-IV Conceptual Planning Approval by CEA 

APPENDIX-V 

Report of Geological Survey of India & Site 

Specific Seismic Data from IMD 

APPENDIX-VI Comments of CWC on Hydrology 

APPENDIX-VII Comments of CWC on Design 

APPENDIX-VIII Comments on CEA on Power Potential 

APPENDIX-IX Comments on CEA on Power Evacuation 

APPENDIX-XI NRSA Report 

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CHAPTER – I 

SUMMARY 

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1. INTRODUCTION 

CHAPTER – I 

SUMMARY 



The Basania Hydroelectric Project located in Mandla district of Madhya Pradesh 

envisages utilization of the water of the river Narmada for power generation on a 

storage type development, harnessing a net head of about 38 m. 

The project with a proposed installation of 90 MW (3 x 30 MW) would afford an annual 

energy generation of 240 MU in a 90% dependable year. The tariff from the project at 

present day cost would be Rs. 15.88 (Levelised). 

The diversion site is located at Latitude 22 0 42’ North, Longitude 80 0 30’17” East. The 

dam site is approachable from Jabalpur – Mandla road at a distance of about 30 km 

from Mandla (Distt. Head Quarters). The nearest rail head is located at Mandla town 

and nearest airport is Jabalpur at a distance of about 140 km. 

2. SCOPE OF WORKS 

The Basania HE Project envisages construction of: 

• 50m high composite storage dam across river Narmada to provide a live storage of 

1219 M cum, with FRL at EL 482 M and MDDL at EL 471 M. 

• 7.5 m dia steel pressure shaft trifurcating to 4.10 m penstocks near power house 

• Dam toe surface power house having an installation of 3 Francis driven generating 

units of 30 MW each operating under a net head of 38m, and 

• 100m long open tail race channel to carry the power house releases back to the 

river. 

The power generated from the project would be evacuated through 132 kV double 

circuit line and 132 kV single circuit line to existing Mandla sub station. 

The Salient features of the project are given at Annexure 1.1 and a General layout 

map at Plate – 6.3. 

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3. HYDROLOGY 



The river Narmada drains a catchment area of about 9472 sq. km. at the proposed dam 

site. The water availability for the project has been derived on the basis of 10-daily 

discharge series evaluated from G&D data for the period 1989-1999 at Mohgaon and 

Manot G&D sites of CWC. The computed inflow series has been utilized for Power 

Potential Studies. The design flood has been assessed as 39,368 cumecs. 

4. POWER POTENTIAL STUDIES 

The computed inflow series for 9 years viz 1989-90 to 1997-98 has been considered in 

the assessment of a power benefits from the project. As per GOI notification for tariff 

the year 1989-90 corresponds to 90% dependable year. An installation of 90 MW 

comprising 3 generating units of 30 MW has been proposed. The energy availability 

from the project in a dependable and an average year has been summarized below: 

Particulars Dependable Year 

Annual Energy Generation 

Annual Energy Generation (GWh) 240.16 

Annual Load Factor (%) 30.46 

Generation during Lean Flow Season (Nov – Jun) 

Power Output (MWc) 24.27 

Load Factor (%) 26.97 

The design energy for tariff at 95% availability in a 90% depandable year has been 

worked out at 240.16 GWh. 

A pondage of 1219.23 Mcum has been provided in the storage which would enable the 

station to operate as peaking station. The pondage is equivalent to 116151.16 MWh 

which is sufficient to operate the station for 1290.6 hours. 

5. POWER EVACUATION ASPECTS 

The power generated from the project would be evacuated through 132 kV, double 

circuit and one 132 kV single circuit line to existing substation at Mandla. 

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6. ENVIRONMENTAL ASPECTS 



The project is located in village Basania in Mandla district of Madhya Pradesh. The 

total land requirement for the construction of project is about 15000 ha. Based on 

assessment of environmental impacts, management plans have to be formulated for 

Catchment Area Treatment, compensatory afforestation and other environmental 

issues. These issues would be addressed during the investigation for DPR. 

7. ESTIMATE OF THE PROJECT COST 

The project is estimated to cost Rs. 2135.06 crores including IDC at June, 2003 price 

levels excluding transmission cost. The preliminary cost estimate of the project has 

been prepared as per guidelines of CEA/CWC. The break down of the cost estimates 

is given below:- 

Civil works : Rs. 1812.49 Crores 

Electro Mechanical works : Rs. 98.83 Crores 

Sub total (Generation) : Rs 1911.32 Crores 

Transmission works : Rs 18.99 Crores 

Total (Hard Cost) : Rs.1930.31 Crores 

Interest During Construction : Rs. 204.75 Crores 

Grand total : Rs. 2135.06 Crores 

8. FINANCIAL ASPECTS 

As indicated above, the Basania HE Project, with an estimated cost of Rs. 2135.06 

Crores (including of Rs. 204.75 Crores) and design energy of 240.16 GWh in a 90% 

dependable year is proposed to be completed in a period of 5 years. The tariff has 

been worked out considering a debt-equity ratio of 70:30, 16% return on equity, annual 

interest rate on loan at 10% and 12% of energy as Free Power to Home State available 

after losses. The tariff for first year and Levelised tariff have been worked out as Rs. 

19.58 /kWh & Rs. 15.88 /kWh respectively. 

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9. CONCLUSIONS 



Basania HE Project involves simple civil works and can be completed in 5 years. The 

project would afford design energy of 240.16 GWh in a 90% dependable year. The 

cost per MW installed work out Rs. 23.72 Crores. Based on above, decision regarding 

further studies and preparation of DPR may be taken. 

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Location 

SALIENT FEATURES OF PROJECT 

State : Madhya Pradesh 

District : Mandla 

River : Narmada 

Dam : Near village Basania 

Longitude : 80° 30’ 17” E 

Latitude : 22° 42’ 00” N 

Nearest Rail head : Mandla 

Nearest Airport : Jabalpur 

Hydrology 

Catchment area : 9472 Sq. km 

Design Flood : 39368 cumec 

Gross Storage (at FRL) : 1848.94 M.cum 

Dead Storage (at MDDL) : 629.71 M.cum 

Live Storage (FRL – MDDL) : 1219.23 M.cum 

Annual Yield : 5389.19 M.cum 

Spillway 

Type : Orific e Type 

Length of Spillway : 357.00 m 

Elevation of Dam Top : EL 484.00 M 

Full Reservoir Level : EL 482.00 M 

Spillway Crest Level : EL 450.00 M 

Number of bays : 21 bays 



ANNEXURE 1.1 

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Size of Gate : 10.00 m (W) x 13.00 m (H) 

Type of gates : Radial 

Energy Dissipation 

Type of Energy Dissipator : Stilling Basin 

Apron Elevation : EL 434.00 M 

Apron Length : 100.00 m 

Non-Overflow Dam 

Length of Non-Overflow Dam : 40.00 m 


Earthen Dam 

Length of Earthen Embankment : 650.00 m 


Top Width : 12.00 m 

Side Slope : 1 (V) : 2 (H) 

Power Dam / Power Intake 

Length of Power Dam : 40.00 m 


FRL : EL 482.00 M 

Minimum Draw Down Level 

(MDDL) 

: EL 471.00 M 

Invert level / Sill level of Intake : EL 453.00 M 

Design Discharge through Intake : 262.50 cumec 

No. & size of Intake gates : 1 no. of size 6.00m (W) X 7.50m (H) 

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Penstock 

Design Discharge : 262.50 cumec 



Number : One; trifurcates near Powerhouse 

Type : Circular, steel lined 

Diameter of Main Penstock : 7.50 m 

Branch Penstocks : 3 nos. of 4.10 m dia. each 

Power House 

Type : Surface (at Dam Toe) 

Size : 75 m (L) X 25 m (W) X 55 m (H) 

Number of Units : 3 nos. 

Unit Spacing : 16.8 m 

Installed capacity : 90 MW (3 X 30 MW) 

Type of turbines : Vertical Francis 

Unit Discharge : 87.50 cumec 

Net Design Head : 38.00 m 

Elevation of C/L of Spiral Casing : EL 433.00 M 

Elevation of Bottom of Draft Tube : EL 422.00 M 

Average Tail Water Level : EL 437.20 M 

E.O.T. Crane Capacity : 200.00 Tonnes 

Tail Race Channel 

Type : Rectangular 

Length : 100.00 m 

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Power Generation 

Installed Capacity : 3 X 30 MW 

Annual Energy Generation in 90% 

dependable year 

Cost Estimate & Financial 

Aspects 

: 240.00 MU 

Civil works : Rs. 1812.49 Crores 

Electro Mechanical works : Rs. 98.83 Crores 

Sub total (Generation) : Rs 1911.32 Crores 

Transmission works : Rs 18.99 Crores 

Total (Hard Cost) : Rs.1930.31 Crores 

Interest During Construction : Rs. 204.75 Crores 

Grand total : Rs. 2135.06 Crores 

Tariff for 1 st Year : Rs. 19.58 

Levellised Tariff : Rs. 15.88 

Tariff for 1 st Year without Free 

Power to Home State 

Levellised Tariff without Free 

Power to Home State 

: Rs. 17.23 

: Rs. 13.98 

CONSTRUCTION PERIOD : 5 Years 



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CHAPTER – II 

BACKGROUND INFORMATION 

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2.1 GENERAL INFORMATION 

CHAPTER II 

BACKGROUND INFORMATION 



Madhya Pradesh, the third largest State, is situated in the heart of India and has 

a total geographical area of 3,08,000 sq. km . It is surrounded by five states i.e. 

Uttar Pradesh, Chhattisgarh, Maharashtra, Gujarat and Rajasthan. The main 

physical regions of the state are the Northern Region, the Malwa Plateau, the 

Narmada valley, the Satpura ranges and the Chhattisgarh plains. The entire 

area in the state is also divided in to four river basin zones i.e. Chambal Betwa 

Basin, Ganga Basin, Mahanadi – Godawari Basin and Narmada Tapti Basin. 

Basinwise Basania project lies on Narmada River. 

Narmada is the fifth largest river in India and the largest west flowing river of 

Indian peninsula originating from Maikala ranges at Amarkantak in Madhya 

Pradesh at an elevation of 900 M. It flows westwards over a length of 1,312 km 

before draining into the Gulf of Cambay, 50 km west of Bharuch city. Vindhya 

hills in the north, Satpura ranges in the south, Maikala ranges in the east and the 

Arabian Sea in the west form the boundaries of the basin. The basin has an 

elongated shape almost like a thin ribbon with a maximum length of 953 Km east 

to west and a maximum width of 234 km north to south. The first 1,077 km of the 

river flows in Madhya Pradesh and the next 35 km stretch of the river forms the 

boundary between the State of Madhya Pradesh and Maharashtra. Again for the 

next 39 km, it forms the boundary between Maharashtra and Gujarat. The last 

stretch of 161 km lies in Gujarat. Out of the total Catchment area of about 1 Lakh 

sq. km, 87% lies in Madhya Pradesh, 2% in Maharashtra and 11% in Gujarat. 

87% of Basin lies in Madhya Pradesh covering the Districts of Shahdol, 

Balaghat, Rajnandgaon, Mandla, Seoni, Dindori, Katni, Jabalpur, Damoh, Sagar, 

Narsinghpur, Chhindwara, Betul, Hoshangabad, Harda, Raisen, Sehore, 

Khandwa, Indore, Dewas , Khargone, Dhar, Jhabua, & Barwani. 

In 1955 a study was carried out to asses the hydro-electric potential of the 

Narmada basin and it was found that there was possibility of generating hydro- 

electric power at different sites in the Narmada basin. On full development, the 

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Narmada has a potential to generate about 3,000 Mega Watt of hydroelectric 

power. 

To utilize the Narmada waters, a master plan of the Narmada Basin has been 

prepared for the development of Irrigation, power and providing water for 

industries and domestic requirements of Madhya Pradesh. (Refer Plates 2.1, 

2.2 & 2.3) 

As per reassessment studies carried out in CEA, based on desk studies, 

Basania H.E. Project envisaged construction of a 55 m high lifting dam with FRL 

of 481.8 M, 9 Km long HRT, a powerhouse with installed capacity of 60 MW. 

The tail race level was 426.7 M. (Ranking studies brief write – up and Layout are 

appended as Appendix- III). 

2.2 POWER SCENARIO AND EXISTING INSTALLATIONS 

The power system in India has grown from small, isolated stations serving 

limited consumers in and around large cities, into large regional power grids. The 

generating capacity installed in the country is around 1,07,600 MW as on 

01.04.2003. 

For the purpose of system planning and operation the country has been divided 

into following five geopolitical regions. Northern, Western, Southern, Eastern 

and North Eastern regional power grids and the transmission system are being 

progressively interconnected for efficient operation of these five regional grids. 

The objective of the system development is to evolve self – sufficient regional 

grid catering to the individual regional power demands. It is also aimed at 

achieving the maximum benefits from integrated operation and ultimately to tie 

the five regional grids together to form a strong National Power Grid, providing 

even greater reliability. 

The Power Scenario of Madhya Pradesh is as under: 

Electricity 1998-99 1997-98 (P) 

Per Capita Consumption Kwh. 358 349 

Percentage of Villages Electrified Per cent 97 85 

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(1991 Census) 



The total power generated by M.P is 3814 MW with another 1250 MW coming 

from the Central Sector. 

Presently a 132 kV sub station exists in Mandla district which is about 30 Km 

from Basania and is being maintained by MPSEB. One 400 KV sub station is at 

Jabalpur which is about 100 Km from Project site and is maintained by PGCIL. 

Both sub stations are in good condition and both have a provision of future 

extension also. 

2.3 NECESSITY OF THE PROJECT AND RELATED ASPECTS 

The Basania HE Project is proposed to be located near village Basania in the 

Mandla district of Madhya Pradesh. The other nearby village, is Ponri at a 

distance of about 3 km from Basania. The dam site is around 30 km from district 

headquarter out of which 3 km is fair weather road. The project envisages 

utilizing perennial water of Narmada River for power generation without affecting 

the environment. Basania HE Project shall be a major source of development in 

rural area. The total power generated by M.P is 3814 MW with another 1250 MW 

coming from the Central Sector. Thus development of such a scheme shall 

contribute to 

(a) Improve agricultural productivity by getting assured, reliable and stable power 

supply for their irrigation needs. 

(b) Improve basic living conditions and education standards 

(c) Establishment and sustenance of small scale and rural agro based industries. 

This would not only stimulate the economic activity in the area but also help in 

preserving and developing a well balanced ecology and environment. 

Besides the above, project will serve the following objectives. 

1. Drinking water 

2. Irrigation 

3. Provide regulated release of water for use in downstream area. 

4. Provide reliable power base to Western region of Madhya Pradesh 

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5. Fish & Wild life conservation 



In addition to above the project will provide opportunities for development of 

agriculture based industries and Rural Electrification of the area in the State. 

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CHAPTER III 

PROJECT AREA 

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CHAPTER III 

PROJECT AREA 

3.1 PROJECT INCLUDING RIVER SYSTEM 



The proposed Basania HE Project on river Narmada consists of a composite 

dam having overflow and non overflow section. One circular, steel lined 

penstock trifurcating near powerhouse is proposed. A surface type power house 

is proposed having 3 x 30 MW capacity. 

The Narmada is the principal river of the district Mandla. It originates at 

Amarkantak in Shahdol District and enters Mandla district from northeastern 

side.In its tortuous course through the district, the river generally flows between 

high and rocky banks, except for some distance near Mandla, where it flows 

through a rich and fertile plain. Near Mandla the river flows on a rocky bed and 

so numerous are its currents that this place is known as Sahastradhara or 

thousand flow. The main tributaries of the Narmada in the district are the Banjar, 

the Halon, the Burhner, the Kharmer, the Balai, and the Hingara. 

THE BANJAR 

The Banjar is the most important tributary of river Narmada in the district. Its 

basin contains some of the best Sal forests of the district and the chest rice tract 

and a level country for about 20 Km. u/s Mandla where it joins the Narmada. 

THE HELON 

The Helon a tributary of Narmada waters the plains of Raigarh-Bichia. Before 

joining the Narmada at the sacred spot Deogaon the two rivers unites 

themselves at village Ghughri. 

THE KHARMER 

The Kharmer, a tributary of Narmada river waters the plains in middle and south 

of Dindori District. It flows eastward for 55 km. along a narrow valley and joins 

the Narmada at Keolari. 

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THE GAUR 



The Gaur river, which rises in Mandla district, forms for a short distance its 

boundary with Jabalpur district, and joins the Narmada in the latter district. 

3.2 SOCIO ECONOMICS AND OTHER ASPECTS 

Setting Up of Basania H.E. project will also create employment opportunities for 

the tribal population of the area during the period of the project construction and 

will go a long way in raising the socio - Economic conditions of the tribal 

population. 

SELECTED SOCIO-ECONOMIC INDICATORS OF 

MADHYA PRADESH AND ALL INDIA 

Items Unit Madhya Pradesh All-India 

1 2 3 4 

Population Census Census 

Density of Population Per Sq. 

Km. 158 (196)** 274 (324)** 

Total Population In Lakh 485.66 

(603.85)** 

Male In Lakh 253.94 

(314.57)** 

Female In Lakh 231.72 

(289.28)** 

Population Growth Rate (1981 - 

91) 

Per cent 

Male-Female Ratio Females 

per ‘000 

Males 

Rural Population in Total 

Population 

Per cent 

8463.03 

(10270.15)** 

4392.31 (5312.77)** 

4070.72 (4957.38)** 

27.2 (24.34)** 23.8 (21.34)** 

912 (920)** 927 (933)** 

74.7 74.3 

Main Workers in Total Population Per cent 36.1 34.1 

Female Main Workers in Total 

Main Workers 

Scheduled Castes Population in 

Total Population 

Per cent 

Per cent 

26.3 22.5 

15.4 16.5 

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Scheduled Tribes Population in 

Total Population 

Per cent 



19.9 8.1 

Per Capita Income 1999-2000 (P) 1998-99 (Q) 

At Current Prices Rupees 11244 14682 

At Constant (1993-94) Prices Rupees 7876 9739 

Electricity 1998-99 1997-98 (P) 

Per Capita Consumption Kwh. 358 349 

Percentage of Villages Electrified 

(1991 Census) 

Per cent 

97 85 

Transport and Communication 1998-99 1996-97 

Total Road Length per 100 Sq. 

Kms. of Area 

Surfaced Road Length per 100 

Sq. Kms. of Area 

Kilometre 

Kilometre 

22 (XX) 75 (X) 

19 (XX) 42 (X) 

Literacy 1991 1991 

Total Literacy Per cent 44.7 (64.11)** 52.2 (65.38)** 

Male Literacy Per cent 58.5 (76.80)** 64.1 (75.85)** 

Female Literacy Per cent 29.4 (50.28)** 39.2 (54.16)** 

Vital Statistics # 1999 (P) 1999 (P) 

Birth Rate Per ‘000 30.7 26.1 

Death Rate Per ‘000 10.6 8.7 

Infant Mortality Rate Per ‘000 

Live Births 

91 70 

Health 1998-99 1996-97 

No. of Government Allopathic 

Hospitals, Dispensaries and 

Primary Health Centres per Lakh 

of Population 

No. of Beds (All Types) in 

Government Allopathic Hospitals 

and Dispensaries per Lakh of 

Population. 

No's 3 5 

No's 35 97 

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(P) = Provisional. (*) = March, 2000 



(Q) = Quick. (**) = Data Relates to 2001 Census. 

(Provisional) 

(E) = Estimated. (#) = Data indicates old Madhya Pradesh. 

(X) = Length of all types roads (excluding 

JRY Roads) 

(XX) = Road constructed under P.W.D. Only. 

Note : 1. All-India Census figures excludes those of Jammu & Kashmir. 

2. Indices of M.P. & All India works out on the basis of related year of 

related estimated population. 

Demographic details 

District Mandla consists of 4 tehsils namely Nainpur, Mandla, Bicchia and Niwas with 

total number of 1234 villages. As per the District census report of the year 2002, total 

population of Mandla district, with the geographical area of 8771sq. km, is 779414. 

Density of population is 89 per sq. km. Mohgaon block under tehsil Mandla, where 

Basania project is proposed has the population of 167663 with the population density of 

104 per sq. km. Male and female population in the rural and urban areas of the region 

are as under: 

District Mandla 

Rural Urban 

Male Female Total Male Female Total 

352338 351132 703470 39256 36688 75944 

(i) Block Mohgaon 

Rural Urban 


352338 351132 703470 39256 36688 75944 

Majority of the population in the district practice Hinduism (88.47%) followed by 

Muslims (1.23%), Sikhs (0.55%), , Jains (0.18%), Christians (0.04%), Buddhists 

(0.01%). As per the census data of the year 1991, Scheduled caste population of the 

district is 37981, out of which 19543 are males and 18438 are females. Scheduled tribe 

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population of the district is 451193, out of which 223691 are males and 227502 are 

females. 

Ethnographic details 

Gonds and Baigas are most significant tribes in the district. Amongst them Gonds are 

well settled and economically better than any other communities. Gonds were earlier 

mostly forest-dwellers but are at present settled agriculturists. Their staple food is millet 

and boiled rice. Both vegetarian and non-vegetarian food is common amongst them. 

The clans are usually named after some animals or plants. Common clans among the 

Gonds are Markam (Mango tree), Tekam (Teak tree), Netam (the dog), Warkara (wild 

cat) and so on. The Gonds have highly developed aesthetic sense. They indulge in 

merry making which is manifested in dancing and singing and in celebration of festivals 

like Holi, Megnath jayanti etc. The dead person, whether male or female is buried with 

face upward, head to the north and feet to the south. Folk dance, folk songs and folk 

music play vital role in the culture life of Gonds. It is through music and dance that they 

keep themselves occupied in the evenings. Folk music and dance give expression to 

their innermost feelings, their love and sorrows, their natural affections and ideas. Folk 

dances of Gonds are popularly called as Karma. Festivals celebrated by Gonds are 

Hareli- festival of rain, Khyania, Rakhi, Dashera, Mela Madai, Chait Gal and Nawa. 

Agriculture 

Major crops cultivated in the district are paddy, wheat, maize and jowar amongst 

cereals; tur, urad and moong amongst pulses, while soyabean , groundnut and 

mustard amongst oilseeds. Commercial crops of the district are cotton and sugarcane. 

Horticulture produce of the district is papaya, banana, oranges, mango and grapes. 

Literacy 

District Mandla has the total literacy rate of 59.85 % . Percentage of male and female 

literates in the district are 74.38% and 45.39% respectively. Total literacy rate in the 

rural areas of the district is 56.71%. 72.11% males and 41.50% females in the rural 

areas are literate. Total literacy rate in the urban areas of the district is 85.83%. 

92.65% males and 78.67% females in the urban areas of the district are literate. 

NH/CON/229 13 01/2004

Post & Telegraph 





As per the census data of the year 2001-2002, district Mandla has1 Head Post office, 

117 Branch Post Offices, 5 Tele-graph offices, 194 Public call offices and 5825 

telephone connections. 

Public Health Delivery System 

As per the census data of the year 2001-02 , district Mandla has 1 Allopathic Hospital, 8 

Community Health Centres, 30 Primary Health Centres, 248 health sub-centres and 29 

Ayurvedic/Homeopathic and Unani health clinics. 

Socio-economic profile of the project area 

At FRL 482 m, total 50 villages and some isolated settlements are likely to get affected 

due to submergence. About 6033 ha. of agriculture land shall get affected due to 

submergence. Detailed socio-economic survey shall however be undertaken at the time 

of Environmental Impact Assessment studies, to ascertain the exact number of villages 

and population getting affected due to project construction. 

SETTLEMENTS IN THE PROJECT AREA 

NH/CON/229 14 01/2004

S.No Name of 

the village 



Approx. 

no. of 

families 

Table 3.2 



Total Land (in ha.) Government / Administrative Buildings 

Private Govt. 

land 

Forest 

land 

School Hospital 

/ PHC 

Bank Post 

Office 

1. Gorakhpur 65 143.21 12.55 12.91 Primary - - - - 

2. Singarpur 225 336.12 39.72 42.94 Primary, 

Others 

NH/CON/229 15 01/2004 

High 

- - - Community 

3. Dongargaon 80 311.26 212.37 34.53 Primary - - - - 

4. Sakri 65 82.26 9.46 15.09 Primary - - - - 

5. Linga 95 168.15 40.67 171.42 Primary - - - - 

6. Manot 43 160.62 39.82 37.15 Primary - - - - 

7. Mahgaon 375 294.60 32.43 56.85 High Vet., 

PHC 

Centre, 

Panchayat 

Bhawan 

2 1 Police 

Station 

8. Devgaon 180 320.70 97.3 61.47 High - - - Panchayat 

9. Munu 212 229.90 14.62 38.55 Middle - - - - 

10. Kasote 45 149.90 19.96 43.89 Primar y - - - - 

11. Ramkhiria 60 218.75 51.73 78.01 Primary - - - - 

12. Saliwada 85 225.05 45.66 16.84 Primary - - - - 

13. Sudgaon 125 401.34 85.39 32.76 Primary - - - - 

Bhawan 

14. Kanchangaon 65 169.87 85.11 112.39 Primary - - - Forest 

Nursery/Park 

15. Umariya 130 356.62 47.16 24.12 Primary - - - - 

16. Raigaon 160 200.87 32.01 73.25 Primary - - - - 

17. Kharrichapar 60 177.55 29.07 41.42 Primary - - - - 

18. Kalhe Githori 210 365.88 85.69 69.96 Primary - - - - 

19. Githar 165 188.73 20.67 Nil Primary - - - - 

20. Khairi 250 298.57 71.31 29.35 Primary - - - - 

21. Indra 95 125.89 17.29 14.49 Primary - - - - 

22. *Basania 75 114.74 4.86 55.8 Primary - - - - 

* Not getting affected due to submergence





CHAPTER IV 

TOPOGRAPHIC & GEO-TECHNICAL ASPECTS 

NH/CON/229 01/2004



4.1 INTRODUCTION 

CHAPTER IV 



TOPOGRAPHIC & GEO-TECHNICAL ASPECTS 

The proposed Basania H.E. Project in Narmada basin in M.P. is one of the 

schemes selected to be taken up in first phase. As per reassessment studies 

carried out in CEA, based on desk studies, Basania H.E. Project envisaged 

construction of a 55 m high lifting dam with FRL of 481.8 M, 9 Km long HRT, a 

powerhouse with installed capacity of 60 MW. The tail race level was 426.7 M. 

(Ranking studies brief write – up and Layout are appended as Appendix- III). 

After further studies proposed scheme has a dam with dam-toe powerhouse 

having FRL of 482 M. The geological inputs mainly have been provided by the 

Geological Survey of India (GSI Report and GSI letter dt 21.01.04 appended as 

Appendix - V). 

REGIONAL TOPOGRAPHICAL AND GEOTECHNICAL FEATURES OF 

PROJECT AREA. 

The river Narmada, one of the prominent river in M.P., takes off from 

Amarkantak in Sahdol distt. at an altitude of 1066m & flows in westerly direction 

between Satpura & Vindhyan ranges. In the upper reaches the river has an 

average slope of 1 in 1000. The Basania project is located in the upper reaches 

of the river, about 248 Km from the source of the river. The area falls in the 

eastern part of the Satpura hill ranges and can be grouped into two distinct 

physiographic provinces namely the northern & central hill ranges and the 

southern ENE-WSW trending isolated hills. Trap rocks here generally form very 

big table lands at many places, which are called ‘dadar’ in local language. Hills 

with rounded tops are seen at places in the southern part of the area. Minimum 

elevation encountered is in the sourthern part of the area (400 m). Narmada is 

the major river which flows over the sourthern part of the area. Central & 

northern part are drained by Balainadi, Gaurnadi, Kolarnadi & Mahanadi. 

General pattern of drainage is dendritic to ill developed trellis pattern with ENE- 

WSW major axis. 

NH/CON/229 16 01/2004





The area exposes almost horizontal Deccan trap flows & intertrappeans. So far, 

14 flows have been delineated in 320 m thick lava pile, ranging in elevation from 

400 M to 720 M above MSL. Flows are basaltic to doleritic in composition, 

sparsely to highly porphyritic and some times mega porphyritic in character. Out 

of 14 flows, 04 are compound pahoehoe, 03 are simple with pahoehoe affinities, 

05 are simple and 02 are ‘Aa’ variety. Total lava pile can be classified into 04 

groups on the basis of 03 marker beds, denoting quiescence period of 

volcanism. The flows at the basal part is designated as Mandla Group, followed 

by 0.5 to 2.5 m thick fossiliferous intertrappean bed. The second flow is 

designated as Kundam Group including megacryst bearing flow, pillow lava and 

red bole beds. The overlying 0.5 to 1 m thick intertrappean contain wood fossil. 

The third flow is designated as Majhgaon Group. It is followed by thin red boles 

and thin unfossiliferous cherty intertrappean horizon. The flow at the top is 

designated as Pipariya Group, consists of Aa flow with columnar joints. 

The stratigraphic sequence is given below:- 

Group No. of flows / 

thickness of pile 

Flow 

characteristic / 

NH/CON/229 17 01/2004 

EL 

Location 

Pipariya 1/55 m ‘Aa’ (665-720 m) Pipariya, E&NE of 

Niwas 

Inter group horizon comprised of red boles & thin unfossiliferous cherty 

intertrappean. 

Majhgaon 5/125 m 2 compound 

pahoehoe 

3 simple with 

pahoehoe affinity 

(540-665 m) 

Majhgaon 

Niwas 

Inter group horizon comprised of highly fossiliferous intertrappean, red boles, 

overlying megacryst. 

Kundam 4/70 m 3 simple, Kundam, Harduli





1 Aa (470-540 m) Rerum 

Inter group horizon comprised of highly fossiliferous intertrappean, limestone and 

green and red bole beds. 

Mandla 4/70 m 2 compound 

pahoehoe 

2 simple 

Base not exposed 

Mandla, Prempur 

Kastra 

The Mandla Group consists of four flows of which two are simple and the two are 

compound pahoehoe type. The pahoehoe characters are well preserved on 

Narmada river bed around Sahastradhara & vesiculated top is exposed in a nala 

bed in SE of Maili. 

The Kundam Group starts with a thin simple flow and ends with a mega 

porphyritic & pillow lava. It also consist of four flows. 

The Majhgaon Group consists of five flows of which lower three are simple with 

pahoehoe affinity and the upper two are compound pahoehoe flows. The 

Pipariya Group is comprised of ‘Aa’ type flow having top surface with 

predominant columnar joints. 

The structure in the area can be grouped into 

• Volcanic & cooling structure within trap rock, and 

• Diastrophic structure. 

The former include cooling joints, vesiculated top, pipe vesicles, pahoehoe toes, 

pillows, small craterlets and clinkery top of the ‘Aa’ flow. The tectonic elements 

of the area include shears within trap rock, joints & broad open warping of trap 

along E-W axis. The shears run in ENE-WSW direction & represented by 

brecciation in intertrappean & flow rocks and by vertical small smooth scarp 

planes within trap rock. The joints trend in ENE-WSW and NNW-SSE direction. 

The broad open antiformal warping is visible in the north & south of Pipariya, 

which is situated in the crest of the warp. 

NH/CON/229 18 01/2004





TOPOGRAPHICAL / GEOTECHNICAL ASPECTS FOR LOCATING 

COMPONENT STRUCTURE OF THE PROJECT. 

From Ramnagar to Mandla town, the river has a straight reach with high banks. 

At Mandla, the river turns north forming a loop around Mandla & continues in 

northerly direction upto Majhgaon. Near project site the river flows within high 

flank on the left side & comparatively low flank on the right. 

The project is located in the Deccan trap country in Central Indian Tectonic 

Zone. The area exposes Deccan trap flows belonging to Mandla, Kundam and 

Majhgaon Groups. The rocks of different groups are seperated by intertrappean 

sedimentaries. The volcanic flows are massive, vesicular & jointed. 

At project site, the bed rock is grayish green dark basalt and its variants of 

Mandla Group. These include hard compact porphyritic basalt, vesicular basalt 

& comparatively soft olivine basalts spotted with tiny dots of cryptocrystalline 

material. Associated with these are soft, tuff beds containing brecciated 

limestone bands and separate intertrappean limestone zone 3 to 4 m thick. At 

earlier explored site, the soft tuff zone containing brecciated limestone band & 

the contiguous soft olivine basalts, have a combined thickness of 9 m & occur 

6.9 m below the river bed level. 

The bed rock is expected to provide good foundation in general except for 

reaches where lave tunnel, red / green bole and soft tuff zone etc. are 

encountered. Zones of erratic weathering could also result in poor foundation 

conditions and such zones may require treatments. Local shears / faults should 

be looked into thoroughly. The rivers in the region have thick Quaternary 

deposits in the valley, therefore thickness of overburden in the river bed & on the 

flanks be assessed at proposed dam site. The exploration has been carried out 

earlier by means of open pits, drills (07 holes) & laboratory tests. The 

overburden thickness in the river bed varies from 7 to 10 m. For powerhouse the 

availability of bedrock be assured with in reasonable depth. 

NH/CON/229 19 01/2004



SEISMICITY 



The area around the project site falls in Central Indian Tectonic Zone. 

Proterozoic fold belts represented by Sausar, Sakoli & Nandgaon Group of rocks 

are exposed in the southern part. The folded volcano-sedimentary pile in 

intracratonic abortive rifts mainly crops out in the southern cover & along the 

narrow belt in the northern part. The Deccan trap covers a vast tract and 

younger anorogenic acid event is confined only in southern part. The 

Quaternary alluvial fill shows considerable development along Narmada 

intracratonic graben. 

The Central Indian Tectonic Zone (CITZ) in the middle constitutes major 

structural discontinuities. This zone is delineated by Son Narmada North Faullt 

(SNNF) in the north & Central Indian Shear (CIS) in south. The intervening area 

is marked by several sub-parallel ENE trending discontinuities namely Son- 

Narmada South Fault (SNSF), Tapti Norht fault, Govilgarh Fault and Tan Shear. 

The SONATA lineament zone, which is bound by SNNF & SNSF comprises 

northern component of CITZ and is known to be episodically active since 

Archean times. Although SNNF has not witnessed any major Phanerozoic 

reactivation. The SNSF, in contrast exhibists evidence of reactivation well into 

Phanerozoic. The raised / dissected Quaternary alluvial fill pile along the 

southern fringe of Narmada valley indicate neotectonic acitivity along SNSF. 

Seismcity is sparce in this area with a few earthquakes occurring with in the 

CITZ. Ten seismic events have been recorded / interpreted in the area between 

1846 & 1997. The Ms of the events varies between 4.0 and 5.5. On 22 nd May 

1997 a damaging earthquake (Mb = 6.0) occurred at Jabalpur. Maximum 

intensity observed was VIII on MSK scale. Five aftershocks with Mb >= 3.0 were 

recorded between 26.05.97 and 15.07.97. Keeping in view the seismicity and 

location of area in zone II/III as per map of India showing seismic zone (IS 1893 

(Part I) : 2002) it is suggested that suitable seismic coefficient commensurating 

with the seismic status of the area be incorporated in design of various project 

components. 

NH/CON/229 20 01/2004





Site specific seismic geology data from India Meteorological Department has 

been appended as Appendix – V. This data may be useful while arriving at site 

specific seismic design parameters during preparation of DPR. 

CONSTRUCTION MATERIAL SURVEY 

There will be no difficulty in getting the required quantities of the various 

construction materials like sand shingles & stones. Sand is available in river bed 

itself. Stones are available at Bazanighati near dam site. Suitable soils for 

earthen work are available nearby with in a lead of 3 Km. 

Geological Plan of the area is enclosed as Plate 4.1. 

NH/CON/229 21 01/2004





CHAPTER V 

HYDROLOGY 

NH/CON/229 01/2004

5.1 GENERAL 



CHAPTER V 

HYDROLOGY 



The Basania Hydroelectric Project is located near Basania in Mandla district of 

Madhya Pradesh and most of the catchment area lies in Mandla and Shahdol 

districts. The proposed dam site may be located on toposheet no. 64B and bears 

longitude 80 0 30’17”E and latitude 22 0 42’N. From its source, Amarkantak in 

Maikala range, the river travels about 274Km up to the proposed dam site. 

The Basania Hydroelectric Project is planned across Narmada River in upper 

Narmada Zone, upstream of Bargi Hydroelectric Project. The project envisages 

construction of concrete dam with earthen embankment across Narmada River. 

5.2 RIVER SYSTEM AND BASIN CHARACTERISTICS 

The Narmada, the largest west flowing river of the peninsula rises from its 

source Amarkantak in the Shahdol district of Madhya Pradesh at an elevation of 

1058m in the Maikala range and runs through the states of Madhya Pradesh, 

Gujarat and Maharashtra. The Narmada Basin is a narrow strip of plains 

bounded on the North by Vindhyas, on the east by Maikala range, on the south 

by Satpuras and on the west by the Arabian Sea. The basin has an elongated 

shape with maximum length 953 Km from east to west and the maximum width 

of 234 Km from north to south. The Narmada basin extends over an area of 

98,796 SqKm and lies between longitude 72 0 32’E to 81 0 47’E and latitude 21 0 

20’N to 23 0 45’N (Refer Plate 2.1). State wise distribution of drainage areas is as 

following: - 

i) Madhya Pradesh 85,859 SqKm 

ii) Gujarat 11,399 SqKm 

iii) Maharashtra 1538 SqKm 

The river travels a distance of 1312 Km before it falls into Gulf of Cambay in the 

Arabian Sea near Bharuch in Gujarat. The first 1079 Km are in Madhya Pradesh, 

next 35 Km forms boundary between Madhya Pradesh and Maharashtra, next 

NH/CON/229 22 01/2004





39 Km forms boundary between Maharashtra and Gujarat. The river has a 

number of falls in its head reaches, at 8 Km from source the river drops 21m to 

24 m at Kapildhara falls, 0.4 Km further downstream it drops about by 4.6m at 

Dudhara falls. Flowing generally in southwesterly direction in narrow and deep 

valley the river takes pinhead turns at many places. Dhaundhara falls is located 

404 Km from the source and is near Jabalpur where river falls 15m, after which it 

flows through marbles, after passing the marble rocks Narmada enters the upper 

fertile plains at Nandhar, 806 Km from source and at Dhardi, 47 Km further 

downstream the river drops 12 m at each place. At 966 Km from source 

Sahasradhara falls is located and river drops further by 6.7m, flowing further 

west the river enters the lower hilly regions and flows through a gorge. 

Convergence of Vindhyas from the north and Satpuras from the south towards 

the river forms the 113 Km gorge. Emerging from the gorge the river enters 

lower plains where it meanders in broad curves till it falls into Gulf of Cambay in 

the Arabian Sea near Bharuch in Gujarat. 

The river has 41 tributaries of which 22 on left side and 19 on the right, the 

important tributaries are Burhner, Banjar, Sher, Kharmer, Tawa, Chhota Tawa, 

Kundi, Shakker, Dudhi, Ganjal, Goi, Karjan, Hiran, Tendori, Barna, Kolar, Man, 

Uri, Hatni, Orsang etc. 

The catchment plan of Narmada basin up to Basania along with rainfall stations, 

G&D sites marked is shown as Plate 5.1. 

5.2.1 CATCHMENT AREA 

The Narmada basin up to Basania proposed dam site lies between Longitude 

80 o 24’5’’ E to 81 o 47’23’’ E and Latitude 21 o 59’40’’ N to 23 o 17’11’’ N. The 

catchment area up to the proposed dam site is 9472 sq.km. Most of the area lies 

in Mandla and Shahdol districts of Madhya Pradesh. 

The catchment areas of River Narmada up to Dindori G&D site is about 2388 

sq.km., up to Manot G&D site is about 5025 sq.km and catchment areas of River 

Burhner, a tributary of Narmada, up to Mohgaon G&D site is about 4090 sq.km. 

NH/CON/229 23 01/2004



5.2.2 CLIMATE AND PRECIPITATION CHARACTERISTICS 



Extreme heat is experienced during summer, while climate is cool in winter. 

Summer temperatures as high as 41.53°C and winter temperatures as low as 

8.27°C have been recorded at Mandla, Jabalpur and Umaria as shown in 

Table 5.1 & Figure 5.2. The relative humidity is as low as 19% in dry weather 

and as high as 86.67% in monsoon season. Relative humidity of the basin 

observed at stations Mandla, Jabalpur and Umaria as shown in Table 5.2. 

The tropic of cancer crosses the basin in upper plains area and a major portion 

of the basin lies just below this line. The climate of the basin is humid and 

tropical although at places extremes of heat and cold are often encountered. 

There are four distinct seasons in the year, namely (i) Cold weather (ii) Hot 

weather (iii) Southwest monsoon (iv)Post monsoon. In cold weather the mean 

annual temperature varies from 17.5 0 C to 20 0 C and in hot weather 25 0 C to 

33.5 0 C. In southwest monsoon the temperature varies from 26 0 C to 27 0 C and 

in post monsoon 19.5 0 C to 24.5 0 C. The cold weather season that commences 

in December and continues till the end of February is characterized by bright 

cloudless days, clean nights and piercing winds. Frost is known to occur 

occasionally, hail too is not uncommon. There is slight precipitation in the basin 

during this season. The hot weather starts in March and continues up to the 

middle of June. May is usually the hottest month. This season remain dry except 

some thunderstorms. The southwest monsoon sets in by the mid of the June and 

withdrawal takes place in the first week of October. June to September are rainy 

months. During this season, the weather is somewhat sultry and oppressive, 

especially in areas adjoining the Narmada. In the post monsoon season, a few 

thunderstorms occur, especially in October. Thereafter, the weather clears up 

and dry pleasant weather prevails throughout the valley. 

Nearly 90% of the total rainfall is received during the five monsoon months from 

June to October. The annual normal rainfall is 1569.60mm. This is based on the 

annual normals of rainfall of the Mandla district shown in Table 5.3 & 

Figure 5.3. 

NH/CON/229 24 01/2004



5.2.3 SURFACE WINDS 



The wind velocity is not very much high. The maximum wind velocity is 7.3 km/h 

in the month of June. Wind velocity remains relatively high in the months of May 

to August. Wind velocities recorded at Mandla, Jabalpur and Umaria are shown 

in Table 5.4. 

5.2.4 EVAPORATION 

The evaporation losses for the proposed reservoir has been observed as 

999.41mm per year on the basis of 1982 to 1987 monthly potential 

evapotranspiration data of Manot, which is about 5 km upstream of proposed 

dam site, shown in Table 5.5. 

5.3 WATER AVAILABILITY STUDY 

5.3.1 DATA AVAILABILITY 

River flows have been measured at different G&D sites by CWC and state 

government of Madhya Pradesh, on Main River Narmada and its tributaries. 

Daily discharge data is available at following relevant G&D sites: - 

1. Manot G&D Site: 

The G&D site is about 5Km upstream of proposed dam site Basania, on Main 

River Narmada, catering to a catchment area of 5025 km 2 . The daily discharge 

data is available from Jun89 to May99. 

2. Mohgaon G&D Site: 

The G&D site is about 16Km upstream of confluence, on River Burhner, a 

tributary of Narmada, catering to a catchment area of 4090 km 2 . The location of 

confluence is about 3km upstream of proposed dam site Basania. The daily 

discharge data is available from Jun89 to May99. 

5.3.2 PREVIOUS STUDY (MPEB) 

Annual runoff series from 1891 to 1967 at proposed dam site Basania was 

derived from weighted average annual rainfall of the proposed catchment using 

rainfall-runoff relationship at Jamtara, which is 128km downstream of Basania. 

NH/CON/229 25 01/2004





This Annual runoff series is enclosed as Annexure 5.2. The average annual 

yield computed as 5628.54 M cum. The average specific yield thus corresponds 

to 0.59 cumec/sq.km. 

5.3.3 PRESENT STUDY (NHPC) 

Present study has been done on the basis of available hydro meteorological data 

depicted in Annexure 5.1. No gauge and discharge is available / observed at 

proposed dam site. Therefore, Average 10-daily discharge series have been 

obtained at Manot G&D Site (1988-1999) and Mohgaon G&D Site (1988-1999), 

based on above mentioned daily discharge data obtained from CWC. These 10- 

daily discharge series are enclosed as Annexure 5.3 and Annexure 5.4. As 

sum of catchment areas of Manot G&D Site and Mohgaon G&D Site is 9115 

sqkm, which is nearly equal to the catchment area 9472sqkm up to the proposed 

dam site Basania. Therefore, a conservative estimate of average10-daily 

discharge series at the proposed dam site Basania for the period 1988-1999 was 

derived by summing up average10-daily discharge series of Manot G&D Site 

and Mohgaon G&D Site. This 10-daily discharge series is enclosed as 

Annexure 5.5 & Figure 5.4. There is wide variation in discharge. The average 

annual yield thus computed as 5389.19 M cum. The average specific yield thus 

corresponds to 0.57 cumec /sq.km. 

5.4 RESERVOIR ELEVATION AREA CAPACITY CURVE 

The reservoir elevation-area-capacity curve at Basania site has been obtained 

from existing report prepared by MPEB. The volume between any two 

elevations has been calculated using conical formula: 

V = {A1+(A1A2) 0.5 +A2}*(H/3). 

Where 

V = the volume between two contours 

H = Contour interval/difference in elevation 

A1 = Area at level of first contour/elevation 

A2 = Area at level of first contour/elevation 

The incremental volumes thus obtained are added to obtain cumulative volume. 

The gross capacity of reservoir at proposed FRL 482 m is 1848.94 Mcum. The 

NH/CON/229 26 01/2004





reservoir elevation-area-capacity curve at Basania H.E. project site adopted for 

the present study is given in Figure 5.1. 

5.5 DESIGN FLOOD 

A concrete dam is proposed to be constructed at proposed site Basania on 

Narmada River with gross storage capacity of 1848.94 Mcum. The gross storage 

capacity is more than 60 Mcum and the height of the dam is more than 30m. 

Therefore, As per Central Water Commission criteria and IS-11223-1985, the 

spillway of the proposed Basania dam has to be designed to negotiate probable 

maximum flood. 

5.5.1 PREVIOUS STUDY (MPEB-1974) 

Estimation of design flood discharge for the design of spillway, two methods 

namely Snyder synthetic unit hydrograph and empirical formulae had been used. 

Design storm on 19 to 20 September 1926 having Bichhia as center had been 

chosen from isohyetal maps of important storm in Narmada basin and used after 

increasing it by 20%. The result obtained from Snyder synthetic unit hydrograph 

using above design storm was higher as compared with other method. Thus, the 

design flood discharge 39,368 cumec by Snyder synthetic unit hydrograph was 

adopted. 

5.5.2 PRESENT STUDY (NHPC) 

Design flood estimation may be done by following approaches: 

• Deterministic approach 

• Probabilistic approach 

• Empirical formulae 

Deterministic approach 

Due to non-availability of observed flood hydrograph, rating curve and other 

relevant data, computation of design flood using deterministic approach has not 

been done at this stage. 

NH/CON/229 27 01/2004



Probabilistic approach 



Normally 25 years annual observed flood peaks are cons idered to be necessary 

for conducting flood frequency analysis. Due to insufficient database the flood 

frequency studies have not been conducted in the present study. 

Empirical formulae 

Design flood for Basania Hydroelectric Project has been worked out by empirical 

formulae in vogue. The results and calculations are given below: - 

Dicken’s formula 

Q = C A 3/4 

Where Q = flood discharge in cumec 

Basania Project: - 

C = constant depending upon the rainfall depth 

A = catchment area in sq.km. 

C = 14 to 20 for Madhyapradesh 

A = 9472 sq.km. 

Therefore, Q = 20(9472) 3/4 

Inglis formula 

Q = 124A/(A+10.4) 0.5 

= 19202 cumec 


A = catchment area in sq.km. 


A = 9472 sq.km. 

Therefore, Q = 124x9472/(9472+10.4) 0.5 

= 12062 cumec 

Nawab Ali Jang Bahadur formula 

{0.925 – (1/14) log0.386A} 

Q = C (0.386A) 


C = coefficient varies from 49 to 60 with maximum value 86 

A = catchment area in sq.km 

NH/CON/229 28 01/2004




C = 60 

A = 9472 sq.km 

Therefore, Q = 60(0.386x9472) 

= 14,694 cumec 

{0.925 – (1/14) log(0.386x9472)} 



As design flood discharge obtained by using empirical formulae is on lower side 

as compared with 39,368 cumec mentioned in report prepared by MPEB 

obtained by using design storm on 19 to 20 September 1926 having Bichhia as 

centre and Snyder unit hydrograph. Therefore, design flood value may be 

adopted as 39,368 cumec for present study. Further studies by using unit 

hydrograph theory and flood frequency analysis will be conducted at the time of 

preparation of feasibility report with more databases. 

5.6 SEDIMENTATION 

The annual sediment rate per square kilometer of drainage area per year is 

available at G&D site Manot on River Narmada and at G&D site Mohgaon on 

River Burhner, which are shown in Table 5.6. These two G&D site is about 5 km 

and 16 km upstream of proposed dam site Basania. The sediment rate at 

proposed dam site Basania is worked out as average of the above mentioned 

two G&D sites. Thus, sediment rate is 0.070 Ham/sqkm/year as calculated in 

Table 5.6. 

5.7 Central Water Commission (CWC) after examination of this chapter, issued 

comments vide letter dt 26.09.03 . Copy of CWC comments and replies of NHPC 

and further Record note of meeting held with CWC on 17.10.03 are appended as 

Appendix – VI. 

NH/CON/229 29 01/2004

Month 

MONTHLY MAXIMUM , MINIMUM & AVERAGE AIR TEMPERATURE 

MANDLA JABALPUR UMARIA 

FOR THE BASIN 

Max( 0 C) Min( 0 C) Average Max( 0 C) Min( 0 C) Average Max( 0 C) Min( 0 C) Average Max( 0 C) Min( 0 C) Average 

Jan 26.00 8.80 17.40 26.10 9.80 17.95 25.00 9.00 17.00 25.70 9.20 17.45 

Feb 29.30 10.10 19.70 28.90 11.40 20.15 27.70 10.80 19.25 28.63 10.77 19.70 

Mar 33.70 14.10 23.90 34.00 15.50 24.75 32.90 15.30 24.10 33.53 14.97 24.25 

Apr 37.90 19.10 28.50 38.00 20.50 29.25 37.90 21.10 29.50 37.93 20.23 29.08 

May 41.30 24.30 32.80 41.90 25.90 33.90 41.40 26.50 33.95 41.53 25.57 33.55 

Jun 37.50 25.30 31.40 37.60 26.40 32.00 37.60 26.80 32.20 37.57 26.17 31.87 

Jul 30.10 23.30 26.70 30.30 23.90 27.10 30.60 24.00 27.30 30.33 23.73 27.03 

Aug 29.20 23.10 26.15 29.50 23.60 26.55 29.40 23.50 26.45 29.37 23.40 26.38 

Sep 30.20 22.30 26.25 30.80 23.10 26.95 30.50 22.80 26.65 30.50 22.73 26.62 

Oct 30.50 17.30 23.90 31.40 18.40 24.90 30.60 17.60 24.10 30.83 17.77 24.30 

Nov 28.10 9.90 19.00 28.90 11.70 20.30 27.60 10.80 19.20 28.20 10.80 19.50 

Dec 26.60 7.80 17.20 26.90 9.00 17.95 25.60 8.00 16.80 26.37 8.27 17.32 

Table 5.1

Month 

STATEMENT SHOWING STATION WISE MEAN MONTHLY RELATIVE HUMIDITY IN PERCENTAGE (MORNING & EVENING) 

MANDLA JABALPUR UMARIA FOR THE BASIN 

Morning Evening Morning Evening Morning Evening Morning Evening 

Jan 85.00 45.00 74.00 43.00 72.00 49.00 77.00 45.67 

Feb 74.00 30.00 64.00 32.00 63.00 35.00 67.00 32.33 

Mar 57.00 24.00 44.00 23.00 46.00 28.00 49.00 25.00 

Apr 43.00 23.00 30.00 18.00 31.00 20.00 34.67 20.33 

May 35.00 21.00 27.00 17.00 28.00 19.00 30.00 19.00 

Jun 64.00 53.00 57.00 45.00 55.00 46.00 58.67 48.00 

Jul 88.00 79.00 85.00 79.00 84.00 80.00 85.67 79.33 

Aug 88.00 82.00 87.00 80.00 85.00 82.00 86.67 81.33 

Sep 86.00 75.00 82.00 71.00 81.00 76.00 83.00 74.00 

Oct 82.00 61.00 73.00 52.00 70.00 39.00 75.00 50.67 

Nov 79.00 48.00 88.00 44.00 63.00 50.00 76.67 47.33 

Dec 84.00 45.00 72.00 43.00 68.00 49.00 74.67 45.67 

Table 5.2

Monthly and Annual Rainfall in Mandla District 

Month Normal Rainfall in mm 

January 27.8 

February 34.7 

March 24.5 

April 17.2 

May 16.4 

June 196.2 

July 492.7 

August 447.8 

September 226.5 

October 59.7 

November 18.4 

December 7.7 

Annual Normal Rainfall in mm 1569.6 

Table 5.3 

Source : Memoirs of the India Meteorological Department Vol.XXXI, Part III

STATEMENT SHOWING STATION WISE MEAN MONTHLY WIND SPEED IN K.M.PER HOUR 

Month MANDLA JABALPUR UMARIA FOR THE BASIN 

Jan 2.00 3.40 3.00 2.80 

Feb 2.40 4.00 3.00 3.13 

Mar 3.00 4.60 4.30 3.97 

Apr 3.80 5.50 5.30 4.87 

May 4.90 7.10 5.80 5.93 

Jun 6.40 8.60 6.90 7.30 

Jul 3.90 8.20 6.20 6.10 

Aug 3.70 7.60 6.00 5.77 

Sep 3.10 5.70 4.50 4.43 

Oct 2.10 3.50 2.90 2.83 

Nov 1.60 2.80 2.50 2.30 

Dec 1.30 2.70 2.50 2.17 

Source:- I.M.D. Pune 

Table 5.4

MONTHLY POTENTIAL EVAPOTRANSPIRATION AT MANOT 

UNIT mm 

YR/MONTH JAN. FEB. MAR. APR. MAY JUN. JUL. AUG. SEP. OCT. NOV. DEC. TOTAL 

1982 41.28 55.68 102.24 139.44 149.04 107.28 85.2 52.56 67.44 63.84 46.56 47.04 957.60 

1983 55.68 58.32 125.76 146.64 152.88 124.32 62.88 64.08 58.08 66.48 58.32 49.44 1022.88 

1984 43.68 55.44 117.84 135.36 189.84 90.48 59.52 56.4 66.24 66.96 60 60 1001.76 

1985 35.04 66.72 119.52 156.48 168.96 124.32 54.96 58.08 69.84 70.56 61.44 54.48 1040.40 

1986 56.88 48.48 106.08 138.48 151.68 113.04 63.84 66.72 77.76 64.08 49.44 37.92 974.40 

1987 37.92 55.2 99.36 129.12 116.64 111.6 64.56 61.92 58.56 66.48 

AVERAGE 45.08 56.64 111.80 140.92 154.84 111.84 65.16 59.96 66.32 66.40 55.15 49.78 999.41 

Table 5.5

SEDIMENTATION RATE 

G&D SITE MANOT G&D SITE MOHGAON 

YEAR Ham/SqKm/year Ton/SqKm/year Ham/SqKm/year Ton/SqKm/year 

1988-89 0.090 1254.33 

1989-90 0.035 487.16 

1990-91 0.090 1261.89 . 

1991-92 0.058 818.11 

1992-93 0.069 966.77 0.010 134.23 

1993-94 0.103 1448.56 0.045 630.56 

1994-95 0.134 1870.45 0.201 2815.40 

1995-96 0.084 1177.11 0.081 1129.34 

1996-97 0.038 537.91 0.024 339.61 

1997-98 0.082 1142.69 0.081 1129.10 

1998-99 0.014 196.55 0.035 490.00 

AVERAGE 0.072 1014.68 0.068 952.61 

AVERAGE OF MANOT G&D SITE AND MOHGAON G&D SITE = (0.072+0.068)/2=0.07 Ham/Sq.km/Year 

Table 5.6

Elevation Area Capacity 

(M) (Sq.Km) (M.cum) 

435.97 0.00 0.00 

439.02 0.80 0.00 

442.07 1.20 3.03 

445.12 2.00 7.86 

448.17 2.40 14.56 

451.22 3.60 23.66 

454.27 7.60 40.37 

457.32 14.01 72.83 

460.36 24.01 129.94 

463.41 35.62 220.29 

466.46 51.22 352.00 

469.51 60.03 521.47 

472.56 86.04 743.04 

475.61 108.05 1038.38 

478.66 126.06 1395.04 

481.71 144.06 1806.67 

482.01 147.48 1850.40 

484.75 162.07 2274.33 

487.8 182.08 2798.87 

RESERVOIR ELEVATION AREA CAPACITY CURVE 

ELEVATION(m)---> 

490 

487 

484 

481 

478 

475 

472 

469 

466 

463 

460 

457 

454 

451 

448 

445 

442 

439 

436 

3000 

2800 

2600 

2400 

2200 

2000 

AREA 

 

800 

CAPACITY 

600 

400 

200 

0 

490 

487 

484 

481 

478 

475 

472 

469 

466 

463 

460 

457 

454 

451 

448 

445 

442 

439 

436 

ELEVATION(m)---> 

Figure 5.1

TEMP IN CENTIGRADE 

45 

40 

35 

30 

25 

20 

15 

10 

5 

0 

25.70 

9.20 

28.63 

10.77 

33.53 

14.97 

37.93 

ATMOSPHERIC TEMPERATURE 

20.23 

41.53 

25.57 

37.57 

26.17 

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 

30.33 

23.73 

29.37 

23.40 

30.50 

22.73 

30.83 

17.77 

28.20 

10.80 

Figure 5.2 

26.37 

8.27

RAINFALL IN mm 

600 

500 

400 

300 

200 

100 

0 

January 

(MONTHLY RAINFALL IN MANDLA DISTRICT) 

27.8 34.7 24.5 17.2 16.4 

February 

March 

April 

May 

196.2 

June 

492.7 

July 

August 

447.8 

September 

226.5 

October 

59.7 

November 

18.4 7.7 

December 

Figure 5.3

AVG. 10-DAILY DISCHARGE 

(CUMEC) 

800 

700 

600 

500 

400 

300 

200 

100 

0 

AVERAGE 10 DAILY FLOWS AT DAM SITE BASANIA 

Figure 5.4 

I II III I II III I II III I II III I II III I II III I II III I II III I II III I II III I II III I II III 

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 

MONTH

S. NO. YEAR Weighted annual 

Rainfall at Basania 

in inches 

Annual Runoff at 

Basania in inches 

ANNEXURE 5.2 

Annual computed 'Runoff Series' at Basania ( using relationship: R = -17.938 + 0.7148P at 

Jamtara, where R = Runoff in inches & P = rainfall in inches) 

Annual average Discharge 

at Basania in Cumec 

1 1891 58.64 23.98 182.93 

2 1892 60.23 25.11 191.60 

3 1893 79.12 38.62 294.61 

4 1894 63.72 27.61 210.63 

5 1895 42.59 12.51 95.40 

6 1896 53.22 20.10 153.37 

7 1897 48.20 16.52 126.00 

8 1898 56.57 22.50 171.64 

9 1899 26.79 1.21 9.22 

10 1900 62.12 26.47 201.92 

11 1901 62.60 26.81 204.52 

12 1902 41.56 11.77 89.76 

13 1903 50.82 18.39 140.31 

14 1904 49.90 17.73 135.27 

15 1905 44.50 13.87 105.84 

16 1906 50.79 18.37 140.13 

17 1907 43.72 13.31 101.58 

18 1908 60.22 25.11 191.56 

19 1909 48.40 16.66 127.11 

20 1910 49.62 17.53 133.75 

21 1911 49.12 17.17 131.02 

22 1912 49.08 17.14 130.78 

23 1913 39.68 10.42 79.52 

24 1914 49.75 17.62 134.45 

25 1915 74.58 35.37 269.84 

26 1916 62.05 26.41 201.50 

27 1917 71.97 33.51 255.64 

28 1918 47.75 16.19 123.54 

29 1919 81.61 40.40 308.21 

30 1920 45.72 14.75 112.49 

31 1921 51.19 18.65 142.32 

32 1922 55.18 21.51 164.08 

33 1923 78.85 38.43 293.15 

34 1924 61.22 25.82 197.01 

35 1925 63.74 27.62 210.74 

36 1926 92.34 48.07 366.69 

37 1927 55.77 21.93 167.27 

38 1928 42.85 12.69 96.80 

39 1929 56.93 22.76 173.60 

40 1930 55.65 21.84 166.64 

41 1931 64.23 27.97 213.39 

42 1932 59.33 24.47 186.69 

43 1933 69.41 31.67 241.64 

44 1934 64.42 28.11 214.46 

45 1935 57.41 23.10 176.21

S. NO. YEAR Weighted annual 

Rainfall at Basania 

in inches 

Annual Runoff at 

Basania in inches 

ANNEXURE 5.2 

Annual average Discharge 

at Basania in Cumec 

46 1936 76.08 36.44 278.03 

47 1937 60.75 25.49 194.43 

48 1938 69.18 31.51 240.42 

49 1939 64.18 27.94 213.13 

50 1940 55.23 21.54 164.33 

51 1941 35.79 7.64 58.32 

52 1942 67.77 30.51 232.74 

53 1943 71.05 32.85 250.59 

54 1944 74.68 35.44 270.39 

55 1945 69.39 31.66 241.55 

56 1946 73.86 34.85 265.90 

57 1947 61.98 26.36 201.13 

58 1948 60.57 25.36 193.44 

59 1949 59.50 24.59 187.61 

60 1950 61.64 26.12 199.29 

61 1951 54.54 21.05 160.58 

62 1952 60.15 25.06 191.15 

63 1953 48.48 16.72 127.54 

64 1954 46.33 15.18 115.79 

65 1955 63.26 27.28 208.11 

66 1956 60.74 25.48 194.35 

67 1957 53.77 20.50 156.37 

68 1958 62.03 26.40 201.40 

69 1959 64.17 27.93 213.10 

70 1960 55.11 21.45 163.65 

71 1961 80.96 39.94 304.67 

72 1962 47.03 15.68 119.61 

73 1963 51.41 18.81 143.48 

74 1964 53.00 19.95 152.17 

75 1965 33.15 5.76 43.91 

76 1966 36.58 8.21 62.64 

77 1967 66.91 29.89 228.00 

AVERAGE 57.82 23.39 178.48 

catchment area of River Narmada upto Basania = 9472 sqkm

YR/MONT 

H 

JAN. FEB. MAR. APR. MAY JUN. JUL. AUG. SEP. OCT. NOV. DEC. AVG. 

I 0.18 105.90 128.60 142.20 44.54 12.01 7.68 

1989 II 12.16 69.71 356.60 147.20 24.70 9.34 7.46 

III 45.84 51.48 246.80 93.86 14.75 7.61 10.62 

I 7.80 3.29 3.06 0.92 0.44 5.19 291.70 288.40 694.90 226.70 43.52 18.51 135.34 

1990 II 5.33 6.86 2.75 0.64 10.10 27.22 299.50 271.10 744.20 156.90 32.92 19.06 

III 3.91 6.81 1.36 0.60 2.73 534.20 346.30 149.70 591.70 82.28 23.63 14.53 

I 12.46 8.68 6.90 3.29 1.26 0.51 8.11 242.40 275.20 34.40 12.39 8.10 95.96 

1991 

II 14.59 6.23 4.25 2.73 1.03 5.31 237.40 485.60 111.20 28.00 10.94 7.80 

III 11.25 6.35 3.64 1.86 0.69 6.20 552.40 1154.00 46.23 14.68 10.08 8.87 

I 7.63 4.44 2.81 2.25 1.21 0.58 8.38 187.90 296.40 33.46 13.20 9.04 79.17 

1992 II 6.32 3.91 2.33 2.51 1.81 0.60 76.75 459.20 600.40 34.71 10.86 8.21 

III 5.41 3.30 1.98 1.10 1.23 2.78 245.50 685.80 59.64 12.38 10.09 7.37 

I 6.60 3.95 5.98 1.63 0.70 0.04 149.60 181.40 425.10 127.70 22.38 12.08 85.23 

1993 II 5.72 2.99 2.97 1.30 0.18 7.98 216.20 568.10 278.30 85.44 19.68 8.27 

III 4.75 2.62 1.87 0.89 0.04 55.69 55.05 164.40 628.60 32.97 15.87 8.11 

I 7.69 5.58 3.20 1.23 1.12 0.43 332.40 1272.00 264.10 81.86 29.25 12.89 171.39 

1994 II 9.08 5.01 2.31 1.37 0.47 55.79 1207.00 589.60 144.00 56.24 21.22 11.63 

III 8.08 4.37 1.84 2.00 0.24 706.30 859.00 323.90 78.34 33.70 14.11 10.21 

I 9.45 12.55 5.65 5.31 1.23 0.70 43.18 861.03 309.55 41.53 14.53 9.20 103.10 

1995 II 12.58 6.73 22.71 3.15 1.61 0.47 258.31 496.43 289.29 32.96 13.37 8.80 

III 8.72 4.91 8.65 2.24 1.12 17.40 536.21 479.66 88.72 25.25 10.48 29.44 

I 54.47 14.59 8.86 3.12 2.02 0.56 57.71 373.96 215.03 58.57 25.18 11.28 71.79 

1996 II 47.80 26.92 5.81 2.55 0.66 38.07 130.44 435.00 205.33 30.45 17.69 10.45 

III 20.36 10.45 4.60 3.10 0.65 19.74 282.29 304.67 62.58 67.32 13.73 9.12 

I 7.84 6.26 3.27 13.40 1.27 0.51 94.38 701.16 561.34 57.65 45.92 141.08 97.47 

1997 II 8.87 4.81 2.78 6.48 0.99 0.84 217.69 161.06 243.82 49.21 59.83 107.30 

III 8.32 3.78 2.10 1.26 0.64 35.79 446.07 403.56 104.04 52.49 86.25 66.84 

I 59.65 86.22 24.85 18.56 6.84 2.20 435.75 150.95 205.99 100.31 46.24 18.39 87.84 

1998 II 35.75 41.83 29.98 11.05 5.22 2.04 197.47 328.36 303.70 65.04 32.87 15.31 

III 309.96 35.96 21.61 6.18 3.25 34.35 86.34 216.76 157.29 40.99 27.49 12.99 

I 10.97 8.31 5.82 2.42 1.63 

1999 II 10.79 9.54 4.44 1.90 1.10 

III 9.27 7.15 3.47 1.55 1.37 

I 18.46 15.39 7.04 5.21 1.77 1.09 152.71 438.78 338.98 80.67 26.46 24.83 

AVERAGE II 15.68 11.48 8.03 3.37 2.32 15.05 291.05 415.11 306.74 56.36 22.87 20.43 97.21 

III 39.00 8.57 5.11 2.08 1.20 145.83 346.06 412.93 191.10 37.68 21.93 17.81 

Note:- All discharges are in cumec 

AVERAGE 10-DAILY DISCHARGE AT MANOT G&D SITE 

ANNEXURE 5.3

YR/MONT 

H 


I 0.07 95.42 66.49 94.09 23.08 6.09 3.34 

1989 II 10.79 17.00 252.20 213.90 11.90 4.62 2.79 

III 25.37 28.96 242.20 58.10 8.07 3.87 4.65 

I 3.26 1.21 1.10 0.18 0.05 3.35 315.80 140.90 506.60 244.00 29.21 13.13 

1990 II 2.22 2.82 0.63 0.11 4.55 14.98 343.30 232.80 607.80 116.40 21.05 12.43 116.33 

III 1.64 2.03 0.30 0.05 1.26 465.30 429.60 88.83 541.60 40.09 16.29 10.05 

I 8.64 4.85 4.38 1.55 0.38 0.54 8.48 129.40 173.20 22.51 8.92 4.75 

1991 II 13.00 3.55 2.97 1.46 0.26 1.19 252.20 337.90 45.88 13.91 7.72 4.21 63.71 

III 6.93 3.37 2.06 0.85 0.12 2.01 275.60 836.80 22.82 7.81 7.18 4.16 

I 3.03 1.41 0.49 0.50 0.33 0.73 7.49 126.10 205.70 40.63 7.62 4.35 

1992 II 2.64 1.18 0.61 0.44 0.15 0.75 39.99 470.90 574.90 42.70 5.99 3.68 67.74 

III 2.05 0.63 0.42 0.34 0.08 6.22 208.40 537.50 69.92 26.93 5.24 2.91 

I 2.60 1.41 1.62 0.44 0.08 0.04 87.31 208.30 345.10 105.90 15.32 6.33 

1993 II 2.09 1.10 0.98 0.30 0.09 24.32 180.20 339.10 155.00 78.07 10.63 5.11 61.33 

III 1.72 0.85 0.52 0.23 0.07 78.33 55.11 120.40 354.30 32.92 8.01 4.62 

I 3.78 2.94 1.16 0.35 0.39 0.25 334.60 809.30 294.20 139.10 19.88 9.91 

1994 II 6.59 3.00 0.93 0.35 0.21 24.36 884.50 435.50 152.90 73.64 16.27 8.21 133.96 

III 4.56 1.87 0.55 0.36 0.11 493.70 597.80 342.70 80.25 45.19 12.00 6.96 

I 7.01 6.30 3.62 3.32 0.52 0.17 45.97 486.43 204.92 42.66 14.46 7.80 

1995 II 9.44 4.39 18.78 1.65 0.38 5.26 232.43 326.69 312.46 29.89 11.45 6.65 76.93 

III 6.14 3.17 6.01 0.75 0.39 59.82 367.31 380.13 92.56 25.36 9.29 9.87 

I 18.51 6.64 4.84 1.27 0.40 0.25 5.94 193.14 183.95 32.93 10.15 5.69 

1996 II 21.54 12.95 2.88 1.03 0.29 35.07 79.12 317.80 130.64 15.83 7.60 5.04 43.05 

III 8.77 5.77 2.12 0.58 0.25 11.09 152.60 202.57 40.23 15.93 6.52 4.74 

I 3.79 2.72 1.14 0.77 0.26 0.28 33.46 459.24 380.29 34.38 21.21 126.47 

1997 II 3.72 2.32 0.83 0.71 0.15 0.22 117.00 80.38 157.81 23.91 33.79 62.77 63.52 

III 3.66 1.53 0.38 0.30 0.11 29.14 364.38 287.38 56.52 35.15 43.31 63.22 

I 42.98 49.67 12.35 7.54 3.88 0.76 358.20 158.67 208.01 94.37 46.09 17.07 

1998 II 21.85 24.25 12.62 5.28 3.12 0.98 234.20 312.77 401.58 55.68 34.29 14.73 75.91 

III 159.47 16.82 9.22 4.76 1.92 40.08 72.00 132.30 126.51 43.11 22.79 12.91 

I 10.24 6.84 3.25 1.24 0.33 

1999 II 8.53 9.33 2.46 0.91 0.20 

III 7.32 5.50 1.60 0.52 0.18 

I 10.38 8.40 3.39 1.72 0.66 0.64 129.27 277.80 259.61 77.96 17.89 19.88 73.68 

AVG= II 9.16 6.49 4.37 1.22 0.94 11.79 237.99 310.60 275.29 46.19 15.34 12.56 

III 20.22 4.15 2.32 0.87 0.45 121.10 255.18 317.08 144.28 28.06 13.45 12.41 


AVERAGE 10-DAILY DISCHARGE AT MOHGAON G&D SITE 

ANNEXURE 5.4

YR/MONT 

H 

1989 

1990 

1991 

1992 

1993 

1994 

1995 

1996 

1997 

1998 

1999 

AVERAGE 


I 0.25 201.32 195.09 236.29 67.62 18.10 11.03 

II 22.95 86.71 608.80 361.10 36.60 13.96 10.25 

III 71.21 80.44 489.00 151.96 22.82 11.47 15.27 

I 11.05 4.50 4.16 1.09 0.49 8.54 607.50 429.30 1201.50 470.70 72.73 31.64 

II 7.55 9.68 3.37 0.74 14.65 42.20 642.80 503.90 1352.00 273.30 53.97 31.49 

III 5.55 8.84 1.65 0.65 3.99 999.50 775.90 238.53 1133.30 122.37 39.92 24.58 

I 21.10 13.53 11.28 4.83 1.64 1.05 16.59 371.80 448.40 56.91 21.31 12.85 

II 27.59 9.78 7.22 4.19 1.29 6.50 489.60 823.50 157.08 41.91 18.66 12.01 

III 18.18 9.71 5.69 2.70 0.81 8.21 828.00 1990.80 69.05 22.49 17.26 13.03 

I 10.66 5.85 3.30 2.75 1.54 1.31 15.87 314.00 502.10 74.09 20.82 13.39 

II 8.96 5.09 2.95 2.94 1.95 1.35 116.74 930.10 1175.30 77.41 16.85 11.89 

III 7.46 3.94 2.40 1.44 1.31 9.00 453.90 1223.30 129.56 39.31 15.33 10.28 

I 9.20 5.36 7.59 2.07 0.78 0.09 236.91 389.70 770.20 233.60 37.70 18.41 

II 7.81 4.10 3.95 1.60 0.26 32.30 396.40 907.20 433.30 163.51 30.31 13.38 

III 6.47 3.47 2.39 1.11 0.12 134.02 110.16 284.80 982.90 65.89 23.88 12.73 

I 11.47 8.52 4.36 1.58 1.50 0.68 667.00 2081.30 558.30 220.96 49.13 22.80 

II 15.67 8.01 3.25 1.72 0.68 80.15 2091.50 1025.10 296.90 129.88 37.49 19.84 

III 12.63 6.25 2.39 2.36 0.35 1200.00 1456.80 666.60 158.59 78.89 26.11 17.17 

I 16.46 18.85 9.27 8.63 1.75 0.87 89.15 1347.46 514.47 84.19 28.99 17.00 

II 22.02 11.12 41.49 4.81 2.00 5.73 490.74 823.12 601.75 62.85 24.82 15.45 

III 14.85 8.08 14.66 2.99 1.51 77.22 903.52 859.79 181.28 50.61 19.77 39.31 

I 72.98 21.23 13.70 4.39 2.41 0.81 63.65 567.10 398.98 91.50 35.33 16.97 

II 69.34 39.87 8.69 3.58 0.95 73.14 209.56 752.80 335.97 46.27 25.29 15.49 

III 29.13 16.22 6.73 3.67 0.90 30.82 434.89 507.24 102.81 83.25 20.25 13.86 

I 11.63 8.98 4.40 14.17 1.52 0.79 127.84 1160.40 941.63 92.03 67.13 267.55 

II 12.59 7.13 3.60 7.20 1.13 1.06 334.69 241.44 401.63 73.12 93.62 170.06 

III 11.98 5.31 2.48 1.56 0.75 64.93 810.45 690.94 160.56 87.64 129.56 130.05 

I 102.63 135.89 37.20 26.11 10.72 2.96 793.95 309.62 414.00 194.68 92.33 35.46 

II 57.60 66.08 42.59 16.33 8.34 3.02 431.67 641.13 705.28 120.72 67.16 30.04 

III 469.43 52.78 30.82 10.94 5.17 74.43 158.34 349.06 283.80 84.10 50.28 25.90 

I 21.21 15.15 9.07 3.65 1.97 

II 19.32 18.87 6.90 2.80 1.30 

III 16.59 12.65 5.07 2.06 1.55 

I 28.84 23.78 10.43 6.93 2.43 1.73 281.98 716.58 598.59 158.63 44.36 44.71 

II 24.84 17.97 12.40 4.59 3.25 26.84 529.04 725.71 582.03 102.56 38.21 32.99 

III 59.23 12.72 7.43 2.95 1.65 266.93 601.24 730.01 335.38 65.74 35.38 30.22 


AVERAGE 10-DAILY DISCHARGE AT BASANIA PROPOSED DAM SITE 

251.6714 

159.6616 

146.9084 

146.5598 

305.3557 

180.0253 

114.8395 

160.9946 

163.7477 

170.8933 

ANNEXURE 5.5





CHAPTER VI 

CONCEPTUAL LAYOUT AND PLANNING 

NH/CON/229 01/2004




CHAPTER VI 



CONCEPTUAL LAYOUT AND PLANNING 

Basania H.E. Project is planned storage scheme on river Narmada. The project 

is planned for generating 90 MW of power with design discharge of 87.5 cumec 

per unit utilizing a net head of 38 m. The annual generation from this project is 

expected to be 240 million units. The conceptual layout of the project has 

finalised after discussion with CEA on 15.09.03. Copy of Record note of 

discussions dated 15.09.03 has been appended as Appendix - IV. The 

constraints on inter-state water sharing has not been considered at this stage. 

Further, the effect of the storage on the downstream projects be also studied at 

DPR stage. The aspect regarding irrigation potential may be considered while 

preparing Detailed Project report after collecting relevant data/ details from State 

Govt. / MoWR. 

The project envisages construction of 49 m high (from river bed) concrete gravity 

dam, a dam toe surface power house and the tail water is discharged directly 

back into the river. 

DIVERSION ARRANGEMENT 

To facilitate construction, the diversion is planned by stage diversion 

arrangement catering to the discharge during lean flows only by constructing a 

side channel. In the first stage, river shall be allowed to flow in the part of the 

river by providing coffer dam. Second stage diversion shall be done through the 

dam spillway blocks. 

CONCRETE GRAVITY DAM 

The concrete gravity dam is proposed near Basania village. This site has been 

selected on the basis of available Survey of India Topo Sheet no 64B / 6 and 

64B / 10 (scale 1: 50,000) with contour interval of 20 m. The submergence due 

to this dam is vast and shall involve submergence of forest land, population & 

road and in turn will require large scale rehabilitation/resettlement. 

NH/CON/229 30 01/2004





The concrete dam is 49 m high from the river level with FRL at EL 482 M and 

MDDL at 471.00 M. The spillway is designed for PMF of 39368 cumec. The 

spillway is provided with 21 orifice type radial gates of size 10 m X 13 m. The 

total spillway length is divided into four parts by providing three divide walls upto 

the stilling basin. To take care of silt flushing requirements, orifice type 

spillway with crest level at EL 450 M which is about 3 m below the intake level 

has been provided. The same shall be optimized in the model studies at later 

stage. As such no separate provision of silt exclusion arrangement is proposed. 

The concrete dam shall be founded on competent rock. Any discontinuity found 

in the foundation grade shall be suitably treated. Stilling basin type arrangement 

has been proposed for energy dissipation. The apron level of stilling basin has 

been proposed at EL 434.00 M to provide sufficient conjugate depth for the 

formation of hydraulic Jump. End sill with EL 436.00 M has been proposed at 

the end of stilling basin. River bed downstream of stilling basin is proposed to be 

suitably protected with CC block. 

EARTHERN DAM 

An earthen dam of about 650 m length is proposed connecting power dam and 

high elevation at left bank of the river. Top level of the earth dam has been kept 

as 484 m with top width as 12 m. 

INTAKE AND WATER CONDUCTOR SYSTEM 

Single intake directly from the power dam blocks with invert level at EL 453 M to 

ensure silt free water is proposed adjoining to the spillway on left side. Intake is 

having rectangular entrance with stop log and service gate. A smooth gradual 

transition from rectangular shape to the circular penstock of dia. 7.50 m has 

been provided. Penstock further trifurcates into branch penstocks of dia. 4.10 m 

each to feed water to each machine of 30 MW. The entire steel penstock is 

proposed to be embedded in the concrete. An inclined type trash rack is 

proposed in front of the intake. 

NH/CON/229 31 01/2004



POWER HOUSE COMPLEX 



A surface power house is proposed to house 3 units of 30 MW each. The size 

of power house shall be 75 m(L) x 25 m(W) x 55 m(H) . The discharge from the 

power house is directly led to the river through the Tail Pool. The draft tube 

gates are proposed to be operated through a gantry crane from draft tube deck. 

The control bay is proposed on the upstream of machine hall. The transformers 

are placed in area between the intake and control bay. 

A cellular wall protects the power house from spillway. This wall will be raised 

from the rock level and provided up to the maximum downstream water level. 

The conceptual layout and planning has been done on the basis of information 

available at PFR stage. However, during DPR, detailed investigation in respect 

of topography, hydrology and geology needs to be carried out. 

HYDRO-MECHANICAL EQUIPMENT 

GENERAL 

Following hydro-mechanical equipments have been envisaged for Basania HE 

Project 

SPILLWAY RADIAL GATE: 

Twenty one nos. of orifice type radial gate for opening size of 10.0 m X 13.0 m 

shall be provided to control the discharge through the gated portion of the 

spillway. Each gate shall be operated by means of a set of hydraulic hoist 

consisting of two hydraulic cylinders of 175 T capacity each. 

The inspection and maintenance of the radial gate shall be carried out by 

lowering a bulkhead gate on the upstream side of these gates. Two number 

wheel type bulkhead gates have been envisaged to cater the maintenance 

requirement of 21 nos. spillway radial gates. Steel liner shall be provided in the 

water passage at the bulkhead gate grooves. Bulkhead gate shall be normally 

operated under balance head condition . However bulkhead gate shall be 

designed for lowering under flowing water condition at MDDL. It is proposed to 

operate the gate by means of a gantry crane of capacity 355 T with the help of a 

lifting beam. 

NH/CON/229 32 01/2004





A Separate storage vent shall be provided in the non-overflow section at the 

deck level for storing the bulkhead gate when not in use. 

Provision has been kept for high strength steel liner between lintel portion of 

spillway bulkhead and radial gate. 

One trolley mounted mobile gasoline engine powered power pack capable of 

operating one gate at 1/4 th of the normal rated speed is also envisaged. 

INTAKE GATE AND BULKHEAD GATE WITH HOISTS, TRASH RACK 

A fixed wheel type gate for opening size of 6.0 m X 7.5 m, shall be provided for 

intake. The gate shall be operated by means of dedicated rope drum hoist of 80 

T capacity. 

On upstream of the intake gate, provision has been made for one set of 

bulkhead gate for opening size 6.0m X 7.5 m. It is proposed to operate the 

bulkhead by means of a 60 T capacity dedicated rope drum hoist. 

On upstream of the bulkhead an inclined trash rack of size 15.0 m X 20.0 m 

covering one intake shall be provided. The cleaning of the trash shall be done by 

means of a trash-raking machine of 1T capacity installed on intake deck. 

DRAFT TUBE GATE 

The draft tube emerging out from each generating unit gets divided into two 

bays. Each bay is provided with one gate of suitable size. The gate will have an 

upstream sealing (pressure / tailrace side) and upstream skin plate provided for 

the maintenance of machine in the powerhouse. 

Each gate shall be operated by means of the traveling gantry crane of capacity 

40 T. 

PRESSURE SHAFT STEEL LINER 

One no. Pressure Shaft of dia. 7500 mm fully steel lined will take off from dam to 

feed the 3 nos. turbine placed in the powerhouse. It comprises horizontal & 

inclined ferrules, 2 nos. vertical bends, 1 no. trifurcation and branch pipes for 

feeding three turbines. 

The material of Pressure Shaft liner including specials shall conform to ASTM 

285 C and for trifurcation it will confirm to lS: 2002. 

NH/CON/229 33 01/2004



MISCELLANEOUS 

RESERVOIR MEASURING AND REMOTE CONTROL SYSTEM 



One complete set of remote control system for the remote control operation of 

bye pass gates, along with programmable computerized automatic reservoir 

monitoring control system is to be provided 

DIESEL GENERATING SET 

A three-phase synchronous type diesel generating set of 500 KVA, 450 Volts, 50 

Hz is envisaged for the emergency operations of the spillway gates at the dam 

site. 

FURTHER STUDIES 

TOPOGRAPHICAL STUDIES 

1. Topographical contour Survey of the dam area and Power House area in 

1:500 scale with 1 m contour intervals. 

2. The riverbed survey comprising of longitudinal section of the river and 

cross sections at Dam axis and tailrace outlet to firm up the power 

potential of the project. 

3. Reservoir Area Survey in appropriate scale. 

GEOLOGICAL AND GEO-TECHNICAL INVESTIGATIONS 

1. Geological/geotechnical investigations including surface mapping and 

subsurface explorations like exploratory drilling and seismic profiling at 

the dam and powerhouse area. 

2. Rock mechanic lab tests shall be required for finding out the properties of 

the rock material. 

3. Construction material survey involving drifts, pits, and topographical 

surveys of the borrow/quarry areas. 

4. Site-specific studies for earthquake design parameters are required to be 

undertaken. 

NH/CON/229 34 01/2004



DESIGN STUDIES 



1. Hydraulic design of various structures like spillway, power intake, stilling 

basin are required for firming up the dimensions. 

2. Sedimentation analysis for working out the post-sedimentation storage 

capacity of the reservoir. 

3. Stability analysis of non-overflow and overflow sections shall have to be 

done taking into account the approved seismic parameters . 

4. Hydraulic model studies for reservoir, Dam spillway and energy 

dissipation structure are required for the confirmation of design 

parameters.. 

5. Realignment of Mandla District road at some reaches . 

OTHER STUDIES 

1. Effect of storage on downstream project. 

2. Irrigation potential of the project. 

CWC comments issued vide letter no 22/1103 HCD/NW&S/533 dated 19.11.03 and 

NHPC replies are appended as Appendix – VII. 

NH/CON/229 35 01/2004





CHAPTER – VII 

POWER POTENTIAL STUDIES 

NH/CON/229 01/2004




CHAPTER – VII 

POWER POTENTIAL STUDIES 



The Chapter contains the optim ization of power potential of the project on the basis 

of the discharge data for the year July 1989 to June 1998 (9 Years). Basania H.E. 

Project is located in Narmada river basin in Madhya Pradesh. It is essentially a 

reservoir scheme. The installed capacity of Basania project has been proposed as 

90 MW comprising of three units, each of 30 MW in the surface type power house. 

The salient features of the project are as follows: - 

Installed capacity 90 MW 

No. & size of unit 3 units of 30MW 

Type of power house Surface type 

Net head 38 meters 

Design discharge per unit 87.5 cumec 

Type of switchyard Conventional 

Turbine type Vertical Francis 

Speed of turbine 187.5 rpm 

Generation voltage 11 KV 

Transmission voltage 132 KV 

GSU Transformer 3 Nos., 35 MVA, 3-phase 

Energy generation in 90% 

dependable year with 95% 240.16 MU 

Machine availability 

7.1 AVAILABLE DATA 

The Power Potential studies have been carried out based on following data: - 

a) Discharge Data 

b) FRL, MDDL, TWL, Head losses and Area capacity curve. 

NH/CON/229 36 01/2004





c) Due to non availability of evaporation loss, evaporation loss has not been 

accounted for in the power potential study. 

7.2 Discharge Data 

Inflow series of 9 years i.e.1989-1990 to 1997-1998 has been obtained and used 

for carrying out power potential and optimization studies. The 10-daily discharge 

data in cumecs for all 9 years is shown in the enclosed Table – 7.1. The criterion 

of 90% dependable flow is applied for conducting power potential studies and 

inflow of same is shown in Table – 7.2. 

7.3 Fixation of Full Reservoir Level (FRL) 

The Full reservoir level has been decided based on the topographical conditions 

and on the submergence of the area. The Full reservoir level has been fixed at 

EL. 482.0 M. 

7.4 Fixation of Minimum Draw Down Level (MDDL) 

The choice of MDDL has mainly been based on firm power requirement, 

requirement of dead storage with regard to sedimentation, water cover to intake 

structure, minimum spillage and ensuring peaking support, the MDDL has been 

fixed at EL.471.0 M. 

7.5 Fixation of Tail water level (TWL) 

As per Madhya Pradesh electricity board report oct’ 72 the average Tail water 

level is EL. 437.08 M. Hence the Tail water level of EL. 437.08 M has been 

retained. 

7.6 Operating Head And Head Losses 

Full Reservoir Level (FRL) and Minimum Draw Down Level (MDDL) are 

respectively at EL 482.0 M and 471.0 M. while the average tail water level 

corresponding to 3 units running has been taken as 437.08 M. Head losses in 

the water conductor system have been taken as 7% of the gross head. The net 

operating head for turbines has been calculated from the following formula, 

NH/CON/229 37 01/2004



Net Operating Head: 



= MDDL + 2/3(FRL-MDDL) - Average Tail Water level – Head Losses 

Thus, by above-mentioned formula, net operating head works out to be 38.38 ≅ 

38.0 m. 

7.7 Definition of terms: - 

7.7.1 90% Dependable Year: 

This is the lower decile of the series of the corresponding monthly period of the 

record i.e. (N+1) x 0.90th year where N is the years for which hydrological data 

are available. 90% dependable year comes out as 1989-1990 as shown in the 

enclosed Table – 7.3. 

7.7.2 Annual Design Energy 

This is the yearly energy generated during the 90% dependable year 1989-1990 

with 95% machine availability, which works out to be 240.16 MU as shown in 

Table – 7.4. It may be seen from Table-III that the firm power is 20.25MW and 

corresponding load factor is 22.5%. Further it is also mentioned that the load 

factor during monsoon i.e. July to October and lean period i.e. Nov to June are 

37.34% and 26.97% respectively. 

7.7.3 Installed Capacity 

The installed capacity of Power house has been selected based on the following 

considerations: - 

• Assessment of the energy generation with various installed capacities. 

• Maximum utilization of the available inflow. 

• Incremental value of energy generation with the increased installed 

capacity. 

• Annual Load factor. 

The power potential study has been carried out for different installed capacities 

ranging from 10 MW to 95 MW with an increment of 5 MW, as shown in Table – 

7.5. Based on the above-mentioned parameters, the installed capacity of the 

power plant has been selected as 90 MW. 

NH/CON/229 38 01/2004



7.7.4 Size of Generating Units 



The power load demand in India is increasing at a very rapid rate, and both 

hydro electric and thermal (including nuclear) power potential in the country are 

being developed not only to meet the overall requirements, but simultaneously 

also to provide a proper hydro and thermal power for optimum operation of the 

system. Keeping this in view current practice is to opt for largest size hydro units 

permissible within the parameters of economy, operating efficiency, 

maintenance, optimum utilization of available water, transport limitations etc. 

Based on above-mentioned parameters, 3 No. Units of 30 MW each have been 

proposed for this project. 

7.7.5 Annual Energy Generation 

The restricted energy generations in the 90% dependable year i.e. (1989-1990) 

are shown in the enclosed Table-7.4. It may be seen from this table, that the 

total energy generation in 90% dependable year with 95% machine availability 

restricted to an installed capacity of 90 MW is 240.16 MU. 

CEA , HP&I comments issued vide letter no 7/9/NHPC/2003/HP&I/1120 dt 30.10.03 

and NHPC replies are appended as Appendix – VIII. 

NH/CON/229 39 01/2004

Month 1989-1990 1990-1991 1991-1992 1992-1993 1993-1994 1994-1995 1995-1996 1996-1997 1997-1998 

JULY 

AUGUST 

SEPTEMBER 

OCTOBER 

NOVEMBER 

DECEMBER 

JANUARY 

FEBRUARY 

MARCH 

APRIL 

MAY 

JUNE 

DISCHARGE DATA (CUMEC) 

1-10 201.32 607.5 16.593 15.87 236.91 667 89.153 63.65 127.841 

11-20 86.71 642.8 489.6 116.74 396.4 2091.5 490.741 209.56 334.692 

21-31 80.44 775.9 828 453.9 110.16 1456.8 903.522 434.89 810.453 

1-10 195.09 429.3 371.8 314 389.7 2081.3 1347.46 567.1 1160.4 

11-20 608.8 503.9 823.5 930.1 907.2 1025.1 823.12 752.8 241.44 

21-31 489 238.53 1990.8 1223.3 284.8 666.6 859.79 507.24 690.94 

1-10 236.29 1201.5 448.4 502.1 770.2 558.3 514.47 398.98 941.63 

11-20 361.1 1352 157.08 1175.3 433.3 296.9 601.75 335.97 401.63 

21-30 151.96 1133.3 69.05 129.56 982.9 158.59 181.28 102.81 160.56 

1-10 67.62 470.7 56.91 74.09 233.6 220.96 84.19 91.498 92.03 

11-20 36.6 273.3 41.91 77.41 163.51 129.88 62.85 46.273 73.12 

21-31 22.823 122.37 22.49 39.31 65.89 78.89 50.61 83.252 87.64 

1-10 18.098 72.73 21.31 20.822 37.7 49.13 28.988 35.332 67.125 

11-20 13.961 53.97 18.664 16.848 30.31 37.49 24.815 25.291 93.622 

21-30 11.472 39.92 17.255 15.325 23.876 26.11 19.774 20.246 129.555 

1-10 11.025 31.64 12.847 13.39 18.412 22.799 17.003 16.967 267.546 

11-20 10.251 31.49 12.011 11.885 13.375 19.837 15.445 15.49 170.062 

21-31 15.267 24.58 13.028 10.278 12.73 17.165 39.31 13.856 130.054 

1-10 11.054 21.1 10.659 9.199 11.468 16.464 72.978 11.629 102.625 

11-20 7.549 27.59 8.955 7.811 15.667 22.015 69.338 12.585 57.598 

21-31 5.553 18.177 7.463 6.466 12.632 14.852 29.134 11.981 469.431 

1-10 4.501 13.525 5.847 5.362 8.517 18.849 21.226 8.977 135.892 

11-20 9.676 9.779 5.094 4.098 8.007 11.121 39.865 7.132 66.082 

21-28 8.836 9.712 3.938 3.465 6.245 8.079 16.223 5.305 52.775 

1-10 4.159 11.28 3.304 7.594 4.358 9.271 13.695 4.401 37.203 

11-20 3.372 7.217 2.945 3.948 3.246 41.49 8.687 3.604 42.593 

21-31 1.654 5.693 2.395 2.388 2.389 14.66 6.725 2.475 30.821 

1-10 1.094 4.831 2.749 2.069 1.578 8.634 4.389 14.171 26.105 

11-20 0.74 4.193 2.942 1.604 1.719 4.808 3.583 7.196 16.332 

21-30 0.654 2.703 1.444 1.113 2.356 2.988 3.673 1.559 10.944 

1-10 0.491 1.641 1.538 0.783 1.502 1.748 2.411 1.524 10.723 

11-20 14.65 1.294 1.952 0.261 0.675 1.995 0.946 1.134 8.343 

21-31 3.991 0.806 1.313 0.116 0.348 1.506 0.903 0.753 5.165 

1-10 8.54 1.053 1.31 0.085 0.678 0.869 0.807 0.79 2.962 

11-20 42.2 6.5 1.35 32.304 80.15 5.726 73.137 1.055 3.019 

21-30 999.5 8.208 8.996 134.02 1200 77.216 30.82 64.93 74.432 

Table 7.1

90% DEPENDABLE AND 50% DEPENDABLE YEAR FLOWS FOR POWER 

GENERATION 

JUL 

AUG 

SEP 

OCT 

NOV 

DEC 

JAN 

FEB 

MAR 

APR 

MAY 

JUN 

MONTH / PERIOD 

90% dependable year 

1989-1990 flows 

CUMECS 

50% dependable year 

1993-1994 flows 

CUMECS 

1-10 201.32 236.91 

11-20 86.71 396.40 

21-31 80.44 110.16 

1-10 195.09 389.70 

11-20 608.80 907.20 

21-31 489.00 284.80 

1-10 236.29 770.20 

11-20 361.10 433.30 

21-30 151.96 982.90 

1-10 67.62 233.60 

11-20 36.60 163.51 

21-31 22.82 65.89 

1-10 18.10 37.70 

11-20 13.96 30.31 

21-30 11.47 23.88 

1-10 11.03 18.41 

11-20 10.25 13.38 

21-31 15.27 12.73 

1-10 11.05 11.47 

11-20 7.55 15.67 

21-31 5.55 12.63 

1-10 4.50 8.52 

11-20 9.68 8.01 

21-28 8.84 6.25 

1-10 4.16 4.36 

11-20 3.37 3.25 

21-31 1.65 2.39 

1-10 1.09 1.58 

11-20 0.74 1.72 

21-30 0.65 2.36 

1-10 0.49 1.50 

11-20 14.65 0.68 

21-31 3.99 0.35 

1-10 8.54 0.68 

11-20 42.20 80.15 

21-30 999.50 1200.00 

Table 7.2

Installed 

Capacity 

Sl.No. Year 

90 

FRL 482 

Selected 

Head 

Design 

Discharge 

38 

262.42 

Overall 

Effeciency 

Machine 

Availability 

MDDL 471 Head Losses 7% Spill option 

Actual 

Energy 

(MU) 

RESERVOIR OPERATION REPORT 

Energy (with 

95% M/C 

Availability) 

(MU) 

Firm Power 

(MW) 

Annual Load 

Factor (%) 

92% 

95% 

With Min. 

Spill 

Minimum 

Reservoir 

Level (m) 

Table 7.3 

Minimum Peaking 

Hours Supported 

by Reservoir 

Operation 

1 1997-98 467.50 456.77 11.34 59.30% 471.00 3.02 

2 1990-91 395.30 383.28 15.05 50.14% 471.00 4.29 

3 1994-95 376.10 368.32 15.51 47.70% 471.00 4.14 

4 1993-94 370.36 364.86 18.91 46.98% 471.00 6.18 

5 1995-96 344.56 335.82 15.65 43.70% 471.00 4.87 

6 1996-97 311.43 308.08 13.09 39.50% 471.00 3.49 

7 1992-93 306.18 302.84 4.51 38.84% 471.00 1.59 

8 1991-92 286.07 281.22 4.72 36.28% 471.00 1.67 

9 1989-90 240.16 240.16 20.25 30.46% 471.00 5.53 

Reservoir Operation Report

1848.94 Load 

Factor 

30% Design Discharge 262.42 1989-1990 90% DEPENDABLE YEAR 

Live storage 1219.23 

Installed Capacity (MW) 90 FRL (m) 482 MDDL (m) 471 

Head 

Loss 

7.00% Rated Head 38.00 Overall Efficiency 92% 3 

PERIOD 

Jul-89 

Aug-89 

Sep-89 

Oct-89 

Nov-89 

Dec-89 

Jan-90 

Feb-90 

Mar-90 

Apr-90 

May-90 

Jun-90 

Reservoir 

Level 

Initial 

Storage 

Inflow in 

Area of 

Reservoir 

RESERVOIR OPERATION STUDY 

Total storage 

Outflow 

(Turbine 

disch.) 

Net storage 

Tail Water 

Level 

Net Head Power Energy 

Energy with 95% 

m/c avail. 

m mcm m3/s mcm Ha mcm m3/s mcm m3/s m m MW GWH GWH Hrs. 

1-10 471.0 629.71 201.32 173.94 7273.41 803.65 201.32 629.71 0.00 437.08 31.55 57.32 13.76 13.76 20.23 

11-20 471.0 629.71 86.71 74.92 7273.41 704.63 86.71 629.71 0.00 437.08 31.55 24.69 5.92 5.92 8.71 

21-31 471.0 629.71 80.44 76.45 7273.41 706.16 80.44 629.71 0.00 437.08 31.55 22.90 6.05 6.05 8.08 

1-10 471.0 629.71 195.09 168.56 7273.41 798.27 104.17 708.27 0.00 437.08 31.55 29.66 7.12 7.12 10.47 

11-20 472.1 708.27 608.80 526.00 8195.68 1234.27 104.17 1144.27 0.00 437.08 32.55 30.60 7.34 7.34 10.30 

21-31 476.5 1144.27 489.00 464.75 11339.47 1609.02 94.70 1519.02 0.00 437.08 36.68 31.34 8.27 8.27 8.82 

1-10 479.6 1519.02 236.29 204.15 13148.01 1723.17 104.17 1633.17 0.00 437.08 39.52 37.16 8.92 8.92 9.91 

11-20 480.4 1633.17 361.10 311.99 13647.40 1945.16 111.37 1848.94 0.01 437.08 40.31 40.52 9.72 9.72 10.80 

21-30 482.0 1848.94 151.96 131.29 14569.17 1980.23 151.96 1848.94 0.00 437.08 41.76 57.28 13.75 13.75 15.27 

1-10 482.0 1848.94 67.62 58.42 14569.17 1907.36 67.62 1848.94 0.00 437.08 41.76 25.49 6.12 6.12 6.80 

11-20 482.0 1848.94 36.60 31.62 14569.17 1880.56 63.77 1825.46 0.00 437.08 41.76 24.04 5.77 5.77 6.41 

21-31 481.8 1825.46 22.82 21.69 14478.77 1847.15 65.24 1785.15 0.00 437.08 41.62 24.50 6.47 6.47 6.53 

1-10 481.6 1785.15 18.10 15.64 14312.28 1800.79 65.97 1743.79 0.00 437.08 41.36 24.62 5.91 5.91 6.57 

11-20 481.2 1743.79 13.96 12.06 14131.32 1755.85 65.97 1698.85 0.00 437.08 41.07 24.46 5.87 5.87 6.52 

21-30 480.9 1698.85 11.47 9.91 13934.73 1708.76 65.97 1651.76 0.00 437.08 40.76 24.27 5.82 5.82 6.47 

1-10 480.6 1651.76 11.03 9.53 13728.73 1661.29 65.97 1604.29 0.00 437.08 40.44 24.08 5.78 5.78 6.42 

11-20 480.2 1604.29 10.25 8.86 13521.04 1613.15 67.13 1555.15 0.00 437.08 40.11 24.30 5.83 5.83 6.48 

21-31 479.8 1555.15 15.27 14.51 13306.05 1569.65 68.39 1504.65 0.00 437.08 39.77 24.55 6.48 6.48 6.55 

1-10 479.5 1504.65 11.05 9.55 13085.17 1514.21 68.29 1455.21 0.00 437.08 39.42 24.30 5.83 5.83 6.48 

11-20 479.1 1455.21 7.55 6.52 12868.84 1461.73 69.44 1401.73 0.00 437.08 39.08 24.50 5.88 5.88 6.53 

21-31 478.7 1401.73 5.55 5.28 12634.89 1407.01 69.44 1341.01 0.00 437.08 38.72 24.26 6.41 6.41 6.47 

1-10 478.2 1341.01 4.50 3.89 12332.81 1344.89 70.60 1283.89 0.00 437.08 38.24 24.37 5.85 5.85 6.50 

11-20 477.7 1283.89 9.68 8.36 12044.44 1292.25 60.19 1240.25 0.00 437.08 37.79 20.52 4.93 4.93 5.53 

21-28 477.3 1240.25 8.84 6.11 11824.10 1246.36 60.76 1204.36 0.00 437.08 37.44 20.53 3.94 3.94 5.60 

1-10 477.0 1204.36 4.16 3.59 11642.87 1207.96 63.66 1152.96 0.00 437.08 37.15 21.35 5.12 5.12 5.89 

11-20 476.6 1152.96 3.37 2.91 11383.31 1155.87 63.66 1100.87 0.00 437.08 36.74 21.11 5.07 5.07 5.93 

21-31 476.1 1100.87 1.65 1.57 11120.32 1102.44 63.13 1042.44 0.00 437.08 36.33 20.70 5.46 5.46 5.91 

1-10 475.6 1042.44 1.09 0.95 10825.31 1043.39 63.66 988.39 0.00 437.08 35.87 20.61 4.95 4.95 6.00 

11-20 475.1 988.39 0.74 0.64 10432.24 989.03 63.66 934.03 0.00 437.08 35.35 20.31 4.87 4.87 6.04 

21-30 474.5 934.03 0.65 0.57 10027.13 934.59 65.97 877.59 0.00 437.08 34.83 20.74 4.98 4.98 6.31 

1-10 473.9 877.59 0.49 0.42 9606.57 878.01 65.97 821.01 0.00 437.08 34.29 20.42 4.90 4.90 6.36 

11-20 473.4 821.01 14.65 12.66 9184.95 833.67 66.55 776.17 0.00 437.08 33.75 20.27 4.86 4.86 6.47 

21-31 472.9 776.17 3.99 3.79 8850.78 779.97 67.34 715.97 0.00 437.08 33.31 20.25 5.35 5.35 6.58 

1-10 472.2 715.97 8.54 7.38 8286.03 723.34 69.44 663.34 0.00 437.08 32.65 20.46 4.91 4.91 6.86 

11-20 471.5 663.34 42.20 36.46 7668.25 699.80 81.12 629.71 0.00 437.08 31.98 23.41 5.62 5.62 8.10 

21-30 471.0 629.71 999.50 863.57 7273.44 1493.28 239.10 629.71 760.40 437.08 31.55 68.07 16.34 16.34 24.00 

Spill 

3288.51 3007.02 20.25 240.16 240.16 5.53 

Peaking 

Hours 

Table 7.4

Period 

Jul-89 

Aug-89 

Sep-89 

Oct-89 

Nov-89 

Dec-89 

Jan-90 

Feb-90 

Mar-90 

Apr-90 

May-90 

Jun-90 

Net Head 38.00 Incremental Steps 

5 Overall Efficiency 

92% 

Inflow (Cumecs) 

Power Potential 

(MW) 

Unrestricted 

Energy 

Generation (MU) 

POWER POTENTIAL IN 90% Dependable Year 

1989-1990 

ENERGY GENERATION IN MU RESTRICTED TO VARIOUS MW 

10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 

1-10 201.32 69.04 16.57 2.40 3.60 4.80 6.00 7.20 8.40 9.60 10.80 12.00 13.20 14.40 15.60 16.57 16.57 16.57 16.57 16.57 16.57 

11-20 86.71 29.74 7.14 2.40 3.60 4.80 6.00 7.14 7.14 7.14 7.14 7.14 7.14 7.14 7.14 7.14 7.14 7.14 7.14 7.14 7.14 

21-31 80.44 27.59 7.28 2.64 3.96 5.28 6.60 7.28 7.28 7.28 7.28 7.28 7.28 7.28 7.28 7.28 7.28 7.28 7.28 7.28 7.28 

1-10 195.09 66.91 16.06 2.40 3.60 4.80 6.00 7.20 8.40 9.60 10.80 12.00 13.20 14.40 15.60 16.06 16.06 16.06 16.06 16.06 16.06 

11-20 608.80 208.79 50.11 2.40 3.60 4.80 6.00 7.20 8.40 9.60 10.80 12.00 13.20 14.40 15.60 16.80 18.00 19.20 20.40 21.60 22.80 

21-31 489.00 167.71 44.27 2.64 3.96 5.28 6.60 7.92 9.24 10.56 11.88 13.20 14.52 15.84 17.16 18.48 19.80 21.12 22.44 23.76 25.08 

1-10 236.29 81.04 19.45 2.40 3.60 4.80 6.00 7.20 8.40 9.60 10.80 12.00 13.20 14.40 15.60 16.80 18.00 19.20 19.45 19.45 19.45 

11-20 361.10 123.84 29.72 2.40 3.60 4.80 6.00 7.20 8.40 9.60 10.80 12.00 13.20 14.40 15.60 16.80 18.00 19.20 20.40 21.60 22.80 

21-30 151.96 52.12 12.51 2.40 3.60 4.80 6.00 7.20 8.40 9.60 10.80 12.00 12.51 12.51 12.51 12.51 12.51 12.51 12.51 12.51 12.51 

1-10 67.62 23.19 5.57 2.40 3.60 4.80 5.57 5.57 5.57 5.57 5.57 5.57 5.57 5.57 5.57 5.57 5.57 5.57 5.57 5.57 5.57 

11-20 36.60 12.55 3.01 2.40 3.01 3.01 3.01 3.01 3.01 3.01 3.01 3.01 3.01 3.01 3.01 3.01 3.01 3.01 3.01 3.01 3.01 

21-31 22.82 7.83 2.07 2.07 2.07 2.07 2.07 2.07 2.07 2.07 2.07 2.07 2.07 2.07 2.07 2.07 2.07 2.07 2.07 2.07 2.07 

1-10 18.10 6.21 1.49 1.49 1.49 1.49 1.49 1.49 1.49 1.49 1.49 1.49 1.49 1.49 1.49 1.49 1.49 1.49 1.49 1.49 1.49 

11-20 13.96 4.79 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 

21-30 11.47 3.93 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 

1-10 11.03 3.78 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 

11-20 10.25 3.52 0.84 0.84 0.84 0.84 0.84 0.84 0.84 0.84 0.84 0.84 0.84 0.84 0.84 0.84 0.84 0.84 0.84 0.84 0.84 

21-31 15.27 5.24 1.38 1.38 1.38 1.38 1.38 1.38 1.38 1.38 1.38 1.38 1.38 1.38 1.38 1.38 1.38 1.38 1.38 1.38 1.38 

1-10 11.05 3.79 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 

11-20 7.55 2.59 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 

21-31 5.55 1.90 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 

1-10 4.50 1.54 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 

11-20 9.68 3.32 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 

21-28 8.84 3.03 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 

1-10 4.16 1.43 0.34 0.34 0.34 0.34 0.34 0.34 0.34 0.34 0.34 0.34 0.34 0.34 0.34 0.34 0.34 0.34 0.34 0.34 0.34 

11-20 3.37 1.16 0.28 0.28 0.28 0.28 0.28 0.28 0.28 0.28 0.28 0.28 0.28 0.28 0.28 0.28 0.28 0.28 0.28 0.28 0.28 

21-31 1.65 0.57 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 

1-10 1.09 0.38 0.09 0.09 0.09 0.09 0.09 0.09 0.09 0.09 0.09 0.09 0.09 0.09 0.09 0.09 0.09 0.09 0.09 0.09 0.09 

11-20 0.74 0.25 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 

21-30 0.65 0.22 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 

1-10 0.49 0.17 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 

11-20 14.65 5.02 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 

21-31 3.99 1.37 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.36 

1-10 8.54 2.93 0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70 

11-20 42.20 14.47 3.47 2.40 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 

21-30 999.50 342.79 82.27 2.40 3.60 4.80 6.00 7.20 8.40 9.60 10.80 12.00 13.20 14.40 15.60 16.80 18.00 19.20 20.40 21.60 22.80 

313.28 47.53 62.66 76.10 89.10 100.64 110.36 120.08 129.80 139.52 148.55 157.07 165.59 173.14 179.26 185.38 190.55 195.47 200.39 

Table 7.5

1848.94 Load 

Factor 

30% Design Discharge 262.42 1989-1990 90% DEPENDABLE YEAR 

Installed Capacity (MW) 90 FRL (m) 482 MDDL (m) 471 Head Loss 7.00% 

Rated 

Head 

38.00 Overall Efficiency 92% 3 

PERIOD 

Reservoir 

Level 

Initial 

Storage 

Inflow in 


Reservoir 

Total storage 

Outflow 

(Turbine 

disch.) 

Net storage Spill 

Tail Water 

Level 



m/c avail. 

Peaking 

Hours 

Jul-89 

Aug-89 

Sep-89 

Oct-89 

Nov-89 

Dec-89 

Jan-90 

Feb-90 

Mar-90 

Apr-90 

May-90 

Jun-90 



1-10 471.0 629.71 201.32 173.94 7273.41 803.65 201.32 629.71 0.00 437.08 31.55 57.32 13.76 13.76 20.23 

11-20 471.0 629.71 86.71 74.92 7273.41 704.63 86.71 629.71 0.00 437.08 31.55 24.69 5.92 5.92 8.71 

21-31 471.0 629.71 80.44 76.45 7273.41 706.16 80.44 629.71 0.00 437.08 31.55 22.90 6.05 6.05 8.08 

1-10 471.0 629.71 195.09 168.56 7273.41 798.27 104.17 708.27 0.00 437.08 31.55 29.66 7.12 7.12 10.47 

11-20 472.1 708.27 608.80 526.00 8195.68 1234.27 104.17 1144.27 0.00 437.08 32.55 30.60 7.34 7.34 10.30 

21-31 476.5 1144.27 489.00 464.75 11339.47 1609.02 94.70 1519.02 0.00 437.08 36.68 31.34 8.27 8.27 8.82 

1-10 479.6 1519.02 236.29 204.15 13148.01 1723.17 104.17 1633.17 0.00 437.08 39.52 37.16 8.92 8.92 9.91 

11-20 480.4 1633.17 361.10 311.99 13647.40 1945.16 111.37 1848.94 0.01 437.08 40.31 40.52 9.72 9.72 10.80 

21-30 482.0 1848.94 151.96 131.29 14569.17 1980.23 151.96 1848.94 0.00 437.08 41.76 57.28 13.75 13.75 15.27 

1-10 482.0 1848.94 67.62 58.42 14569.17 1907.36 67.62 1848.94 0.00 437.08 41.76 25.49 6.12 6.12 6.80 

11-20 482.0 1848.94 36.60 31.62 14569.17 1880.56 63.77 1825.46 0.00 437.08 41.76 24.04 5.77 5.77 6.41 

21-31 481.8 1825.46 22.82 21.69 14478.77 1847.15 65.24 1785.15 0.00 437.08 41.62 24.50 6.47 6.47 6.53 

1-10 481.6 1785.15 18.10 15.64 14312.28 1800.79 65.97 1743.79 0.00 437.08 41.36 24.62 5.91 5.91 6.57 

11-20 481.2 1743.79 13.96 12.06 14131.32 1755.85 65.97 1698.85 0.00 437.08 41.07 24.46 5.87 5.87 6.52 

21-30 480.9 1698.85 11.47 9.91 13934.73 1708.76 65.97 1651.76 0.00 437.08 40.76 24.27 5.82 5.82 6.47 

1-10 480.6 1651.76 11.03 9.53 13728.73 1661.29 65.97 1604.29 0.00 437.08 40.44 24.08 5.78 5.78 6.42 

11-20 480.2 1604.29 10.25 8.86 13521.04 1613.15 67.13 1555.15 0.00 437.08 40.11 24.30 5.83 5.83 6.48 

21-31 479.8 1555.15 15.27 14.51 13306.05 1569.65 68.39 1504.65 0.00 437.08 39.77 24.55 6.48 6.48 6.55 

1-10 479.5 1504.65 11.05 9.55 13085.17 1514.21 68.29 1455.21 0.00 437.08 39.42 24.30 5.83 5.83 6.48 

11-20 479.1 1455.21 7.55 6.52 12868.84 1461.73 69.44 1401.73 0.00 437.08 39.08 24.50 5.88 5.88 6.53 

21-31 478.7 1401.73 5.55 5.28 12634.89 1407.01 69.44 1341.01 0.00 437.08 38.72 24.26 6.41 6.41 6.47 

1-10 478.2 1341.01 4.50 3.89 12332.81 1344.89 70.60 1283.89 0.00 437.08 38.24 24.37 5.85 5.85 6.50 

11-20 477.7 1283.89 9.68 8.36 12044.44 1292.25 60.19 1240.25 0.00 437.08 37.79 20.52 4.93 4.93 5.53 

21-28 477.3 1240.25 8.84 6.11 11824.10 1246.36 60.76 1204.36 0.00 437.08 37.44 20.53 3.94 3.94 5.60 

1-10 477.0 1204.36 4.16 3.59 11642.87 1207.96 63.66 1152.96 0.00 437.08 37.15 21.35 5.12 5.12 5.89 

11-20 476.6 1152.96 3.37 2.91 11383.31 1155.87 63.66 1100.87 0.00 437.08 36.74 21.11 5.07 5.07 5.93 

21-31 476.1 1100.87 1.65 1.57 11120.32 1102.44 63.13 1042.44 0.00 437.08 36.33 20.70 5.46 5.46 5.91 

1-10 475.6 1042.44 1.09 0.95 10825.31 1043.39 63.66 988.39 0.00 437.08 35.87 20.61 4.95 4.95 6.00 

11-20 475.1 988.39 0.74 0.64 10432.24 989.03 63.66 934.03 0.00 437.08 35.35 20.31 4.87 4.87 6.04 

21-30 474.5 934.03 0.65 0.57 10027.13 934.59 65.97 877.59 0.00 437.08 34.83 20.74 4.98 4.98 6.31 

1-10 473.9 877.59 0.49 0.42 9606.57 878.01 65.97 821.01 0.00 437.08 34.29 20.42 4.90 4.90 6.36 

11-20 473.4 821.01 14.65 12.66 9184.95 833.67 66.55 776.17 0.00 437.08 33.75 20.27 4.86 4.86 6.47 

21-31 472.9 776.17 3.99 3.79 8850.78 779.97 67.34 715.97 0.00 437.08 33.31 20.25 5.35 5.35 6.58 

1-10 472.2 715.97 8.54 7.38 8286.03 723.34 69.44 663.34 0.00 437.08 32.65 20.46 4.91 4.91 6.86 

11-20 471.5 663.34 42.20 36.46 7668.25 699.80 81.12 629.71 0.00 437.08 31.98 23.41 5.62 5.62 8.10 

21-30 471.0 629.71 999.50 863.57 7273.44 1493.28 239.10 629.71 760.40 437.08 31.55 68.07 16.34 16.34 24.00 

3007.02 20.25 240.16 240.16 5.53 

Annexure 7.1/9

1848.94 Load 

Factor 

50% Design Discharge 262.42 

Installed Capacity (MW) 90 FRL (m) 482 MDDL (m) 471 Head Loss 7.00% Rated Head 38.00 Overall Efficiency 92% 3 

PERIOD 

Jul-90 

Aug-90 

Sep-90 

Oct-90 

Nov-90 

Dec-90 

Jan-91 

Feb-91 

Mar-91 

Apr-91 

May-91 

Jun-91 

Reservoir 

Level 

Initial 

Storage 

Inflow in 


Reservoir 


1990-1991 

Total storage 

Outflow 

(Turbine 

disch.) 

Net storage 

Tail Water 

Level 



m/c avail. 


1-10 471.0 629.71 607.50 524.88 7273.41 1154.59 237.15 949.69 0.00 437.08 31.55 67.52 16.20 16.20 23.83 

11-20 474.7 949.69 642.80 555.38 10143.90 1505.07 251.78 1287.53 0.00 437.08 34.98 79.49 19.08 19.08 24.00 

21-31 477.7 1287.53 775.90 737.42 12062.81 2024.95 261.78 1776.15 0.00 437.08 37.81 89.34 23.59 22.57 24.00 

1-10 481.5 1776.15 429.30 370.92 14272.90 2147.07 241.47 1848.94 103.58 437.08 41.30 90.00 21.60 20.52 24.00 

11-20 482.0 1848.94 503.90 435.37 14569.17 2284.31 238.77 1848.94 265.13 437.08 41.76 90.00 21.60 20.52 24.00 

21-31 482.0 1848.94 238.53 226.70 14569.17 2075.64 238.77 1848.71 0.00 437.08 41.76 90.00 23.76 22.57 24.00 

1-10 482.0 1848.71 1201.50 1038.10 14568.28 2886.80 238.78 1848.94 962.45 437.08 41.76 90.00 21.60 20.52 24.00 

11-20 482.0 1848.94 1352.00 1168.13 14569.17 3017.07 238.77 1848.94 1113.23 437.08 41.76 90.00 21.60 20.52 24.00 

21-30 482.0 1848.94 1133.30 979.17 14569.17 2828.11 238.77 1848.94 894.53 437.08 41.76 90.00 21.60 20.52 24.00 

1-10 482.0 1848.94 470.70 406.68 14569.17 2255.62 238.77 1848.94 231.93 437.08 41.76 90.00 21.60 20.52 24.00 

11-20 482.0 1848.94 273.30 236.13 14569.17 2085.07 238.77 1848.94 34.53 437.08 41.76 90.00 21.60 20.52 24.00 

21-31 482.0 1848.94 122.37 116.30 14569.17 1965.24 238.77 1738.31 0.00 437.08 41.76 90.00 23.76 22.57 24.00 

1-10 481.2 1738.31 72.73 62.84 14107.35 1801.15 243.01 1591.19 0.00 437.08 41.03 90.00 21.60 20.52 24.00 

11-20 480.1 1591.19 53.97 46.63 13463.73 1637.82 115.74 1537.82 0.00 437.08 40.02 41.81 10.03 10.03 11.15 

21-30 479.7 1537.82 39.92 34.49 13230.25 1572.31 69.44 1512.31 0.00 437.08 39.65 24.85 5.96 5.96 6.63 

1-10 479.5 1512.31 31.64 27.34 13118.65 1539.65 69.44 1479.65 0.00 437.08 39.48 24.74 5.94 5.94 6.60 

11-20 479.3 1479.65 31.49 27.21 12975.76 1506.85 69.44 1446.85 0.00 437.08 39.25 24.60 5.90 5.90 6.56 

21-31 479.0 1446.85 24.58 23.36 12832.30 1470.21 63.13 1410.21 0.00 437.08 39.03 22.24 5.87 5.87 5.93 

1-10 478.8 1410.21 21.10 18.23 12672.01 1428.44 69.44 1368.44 0.00 437.08 38.77 24.30 5.83 5.83 6.48 

11-20 478.4 1368.44 27.59 23.84 12471.35 1392.28 46.30 1352.28 0.00 437.08 38.46 16.07 3.86 3.86 4.29 

21-31 478.3 1352.28 18.18 17.28 12389.74 1369.56 52.61 1319.56 0.00 437.08 38.33 18.20 4.80 4.80 4.85 

1-10 478.0 1319.56 13.53 11.69 12224.51 1331.24 57.87 1281.24 0.00 437.08 38.07 19.88 4.77 4.77 5.30 

11-20 477.7 1281.24 9.78 8.45 12031.06 1289.69 57.87 1239.69 0.00 437.08 37.76 19.72 4.73 4.73 5.31 

21-28 477.3 1239.69 9.71 6.71 11821.26 1246.40 72.34 1196.40 0.00 437.08 37.43 24.44 4.69 4.69 6.67 

1-10 477.0 1196.40 11.28 9.75 11602.70 1206.15 57.87 1156.15 0.00 437.08 37.09 19.37 4.65 4.65 5.36 

11-20 476.6 1156.15 7.22 6.24 11399.45 1162.39 57.87 1112.39 0.00 437.08 36.77 19.20 4.61 4.61 5.39 

21-31 476.2 1112.39 5.69 5.41 11178.47 1117.80 52.61 1067.80 0.00 437.08 36.42 17.29 4.57 4.57 4.92 

1-10 475.9 1067.80 4.83 4.17 10953.34 1071.97 57.87 1021.97 0.00 437.08 36.07 18.84 4.52 4.52 5.44 

11-20 475.4 1021.97 4.19 3.62 10682.52 1025.59 57.87 975.59 0.00 437.08 35.68 18.63 4.47 4.47 5.47 

21-30 475.0 975.59 2.70 2.34 10336.91 977.93 57.87 927.93 0.00 437.08 35.23 18.40 4.42 4.42 5.50 

1-10 474.5 927.93 1.64 1.42 9981.70 929.35 57.87 879.35 0.00 437.08 34.77 18.16 4.36 4.36 5.54 

11-20 474.0 879.35 1.29 1.12 9619.66 880.46 48.61 838.46 0.00 437.08 34.31 15.05 3.61 3.61 4.68 

21-31 473.5 838.46 0.81 0.77 9315.00 839.23 49.45 792.23 0.00 437.08 33.91 15.14 4.00 4.00 4.79 

1-10 473.1 792.23 1.05 0.91 8970.45 793.14 57.87 743.14 0.00 437.08 33.47 17.48 4.20 4.20 5.65 

11-20 472.6 743.14 6.50 5.62 8604.63 748.76 57.87 698.76 0.00 437.08 33.00 17.23 4.14 4.14 5.69 

21-30 472.0 698.76 8.21 7.09 8084.00 705.85 88.13 629.71 0.00 437.08 32.43 25.79 6.19 6.19 8.73 

Spill 

4590.79 15.05 395.30 383.28 4.29 

Peaking 

Hours 

Annexure 7.2/9

1848.94 Load 

Factor 

36% Design Discharge 262.42 

Installed Capacity (MW) 90 FRL (m) 482 MDDL (m) 471 Head Loss 7.00% Rated Head 38.00 Overall Efficiency 92% 3 

PERIOD 

Jul-91 

Aug-91 

Sep-91 

Oct-91 

Nov-91 

Dec-91 

Jan-92 

Feb-92 

Mar-92 

Apr-92 

May-92 

Jun-92 

Reservoir 

Level 

Initial 

Storage 


1991-1992 

Outflow 


Inflow in Total storage (Turbine Net storage Spill 

Reservoir 

disch.) 

Tail Water 

Level 



m/c avail. 


1-10 471.0 629.71 16.59 14.34 7273.41 644.05 16.59 629.71 0.00 437.08 31.55 4.72 1.13 1.13 1.67 

11-20 471.0 629.71 489.60 423.01 7273.41 1052.73 239.10 846.14 0.00 437.08 31.55 68.07 16.34 16.34 24.00 

21-31 473.6 846.14 828.00 786.93 9372.22 1633.07 248.18 1397.21 0.00 437.08 33.99 76.13 20.10 20.10 24.00 

1-10 478.7 1397.21 371.80 321.24 12615.11 1718.44 257.78 1495.72 0.00 437.08 38.68 90.00 21.60 20.52 24.00 

11-20 479.4 1495.72 823.50 711.50 13046.09 2207.23 253.32 1848.94 161.36 437.08 39.36 90.00 21.60 20.52 24.00 

21-31 482.0 1848.94 1990.80 1892.06 14569.17 3740.99 238.77 1848.94 1752.03 437.08 41.76 90.00 23.76 22.57 24.00 

1-10 482.0 1848.94 448.40 387.42 14569.17 2236.36 238.77 1848.94 209.63 437.08 41.76 90.00 21.60 20.52 24.00 

11-20 482.0 1848.94 157.08 135.72 14569.17 1984.66 231.48 1784.66 0.00 437.08 41.76 87.25 20.94 20.52 23.27 

21-30 481.5 1784.66 69.05 59.66 14310.10 1844.31 115.74 1744.31 0.00 437.08 41.35 43.20 10.37 10.37 11.52 

1-10 481.2 1744.31 56.91 49.17 14133.62 1793.49 104.17 1703.49 0.00 437.08 41.08 38.62 9.27 9.27 10.30 

11-20 480.9 1703.49 41.91 36.21 13955.00 1739.70 57.87 1689.70 0.00 437.08 40.79 21.31 5.11 5.11 5.68 

21-31 480.8 1689.70 22.49 21.37 13894.68 1711.07 52.61 1661.07 0.00 437.08 40.70 19.32 5.10 5.10 5.15 

1-10 480.6 1661.07 21.31 18.41 13769.45 1679.48 57.87 1629.48 0.00 437.08 40.50 21.15 5.08 5.08 5.64 

11-20 480.4 1629.48 18.66 16.13 13631.26 1645.61 57.87 1595.61 0.00 437.08 40.28 21.04 5.05 5.05 5.61 

21-30 480.1 1595.61 17.26 14.91 13483.06 1610.52 57.87 1560.52 0.00 437.08 40.05 20.92 5.02 5.02 5.58 

1-10 479.9 1560.52 12.85 11.10 13329.55 1571.62 57.87 1521.62 0.00 437.08 39.81 20.79 4.99 4.99 5.54 

11-20 479.6 1521.62 12.01 10.38 13159.37 1531.99 57.87 1481.99 0.00 437.08 39.54 20.65 4.96 4.96 5.51 

21-31 479.3 1481.99 13.03 12.38 12986.03 1494.37 52.61 1444.37 0.00 437.08 39.27 18.65 4.92 4.92 4.97 

1-10 479.0 1444.37 10.66 9.21 12821.46 1453.58 57.87 1403.58 0.00 437.08 39.01 20.37 4.89 4.89 5.43 

11-20 478.7 1403.58 8.96 7.74 12643.01 1411.32 57.87 1361.32 0.00 437.08 38.73 20.23 4.85 4.85 5.39 

21-31 478.4 1361.32 7.46 7.09 12435.38 1368.41 52.61 1318.41 0.00 437.08 38.40 18.23 4.81 4.81 4.86 

1-10 478.0 1318.41 5.85 5.05 12218.74 1323.47 57.87 1273.47 0.00 437.08 38.06 19.88 4.77 4.77 5.30 

11-20 477.6 1273.47 5.09 4.40 11991.79 1277.87 57.87 1227.87 0.00 437.08 37.70 19.69 4.73 4.73 5.32 

21-29 477.2 1227.87 3.94 3.06 11761.55 1230.93 64.30 1180.93 0.00 437.08 37.34 21.67 4.68 4.68 5.94 

1-10 476.8 1180.93 3.30 2.85 11524.56 1183.78 57.87 1133.78 0.00 437.08 36.97 19.31 4.63 4.63 5.37 

11-20 476.4 1133.78 2.95 2.54 11286.51 1136.33 57.87 1086.33 0.00 437.08 36.59 19.11 4.59 4.59 5.40 

21-31 476.0 1086.33 2.40 2.28 11046.90 1088.60 52.61 1038.60 0.00 437.08 36.21 17.19 4.54 4.54 4.93 

1-10 475.6 1038.60 2.75 2.38 10805.94 1040.98 57.87 990.98 0.00 437.08 35.83 18.72 4.49 4.49 5.46 

11-20 475.1 990.98 2.94 2.54 10451.57 993.52 57.87 943.52 0.00 437.08 35.38 18.48 4.43 4.43 5.49 

21-30 474.6 943.52 1.44 1.25 10097.90 944.77 57.87 894.77 0.00 437.08 34.92 18.24 4.38 4.38 5.53 

1-10 474.1 894.77 1.54 1.33 9734.59 896.10 57.87 846.10 0.00 437.08 34.45 17.99 4.32 4.32 5.56 

11-20 473.6 846.10 1.95 1.69 9371.88 847.78 52.08 802.78 0.00 437.08 33.99 15.98 3.83 3.83 5.04 

21-31 473.2 802.78 1.31 1.25 9049.10 804.03 47.35 759.03 0.00 437.08 33.57 14.35 3.79 3.79 4.61 

1-10 472.7 759.03 1.31 1.13 8723.05 760.16 52.08 715.16 0.00 437.08 33.15 15.58 3.74 3.74 5.11 

11-20 472.2 715.16 1.35 1.17 8276.63 716.33 52.08 671.33 0.00 437.08 32.64 15.34 3.68 3.68 5.14 

21-30 471.6 671.33 9.00 7.77 7762.02 679.10 57.16 629.71 0.00 437.08 32.08 16.55 3.97 3.97 5.70 

Peaking 

Hours 

3405.33 4.72 286.07 281.22 1.67 

Annexure 7.3/9

1848.94 Load 

Factor 

39% Design Discharge 262.42 1992-1993 


Head 

Loss 


PERIOD 

Jul-92 

Aug-92 

Sep-92 

Oct-92 

Nov-92 

Dec-92 

Jan-93 

Feb-93 

Mar-93 

Apr-93 

May-93 

Jun-93 

Reservoir 

Level 

Initial 

Storage 

Inflow in 


Reservoir 


Total storage 

Outflow 

(Turbine 

disch.) 

Net storage 

Tail Water 

Level 



m/c avail. 


1-10 471.0 629.71 15.87 13.71 7273.41 643.42 15.86 629.72 0.00 437.08 31.55 4.51 1.08 1.08 1.59 

11-20 471.0 629.72 116.74 100.86 7273.54 730.59 116.32 630.09 0.00 437.08 31.55 33.12 7.95 7.95 11.69 

21-31 471.0 630.09 453.90 431.39 7277.81 1061.47 239.12 834.22 0.00 437.08 31.55 68.09 17.98 17.98 24.00 

1-10 473.5 834.22 314.00 271.30 9283.33 1105.51 247.75 891.46 0.00 437.08 33.87 75.74 18.18 18.18 24.00 

11-20 474.1 891.46 930.10 803.61 9709.90 1695.06 249.73 1479.29 0.00 437.08 34.42 77.58 18.62 18.62 24.00 

21-31 479.3 1479.29 1223.30 1162.62 12974.22 2641.92 254.06 1848.94 580.30 437.08 39.25 90.00 23.76 22.57 24.00 

1-10 482.0 1848.94 502.10 433.81 14569.17 2282.75 238.77 1848.94 263.33 437.08 41.76 90.00 21.60 20.52 24.00 

11-20 482.0 1848.94 1175.30 1015.46 14569.17 2864.40 238.77 1848.94 936.53 437.08 41.76 90.00 21.60 20.52 24.00 

21-30 482.0 1848.94 129.56 111.94 14569.17 1960.88 129.56 1848.94 0.00 437.08 41.76 48.83 11.72 11.72 13.02 

1-10 482.0 1848.94 74.09 64.01 14569.17 1912.95 74.09 1848.94 0.00 437.08 41.76 27.92 6.70 6.70 7.45 

11-20 482.0 1848.94 77.41 66.88 14569.17 1915.82 77.41 1848.94 0.00 437.08 41.76 29.18 7.00 7.00 7.78 

21-31 482.0 1848.94 39.31 37.36 14569.17 1886.30 39.98 1848.30 0.00 437.08 41.76 15.07 3.98 3.98 4.02 

1-10 482.0 1848.30 20.82 17.99 14566.71 1866.29 40.51 1831.29 0.00 437.08 41.76 15.27 3.66 3.66 4.07 

11-20 481.9 1831.29 16.85 14.56 14501.21 1845.85 39.93 1811.35 0.00 437.08 41.66 15.01 3.60 3.60 4.00 

21-30 481.7 1811.35 15.33 13.24 14424.41 1824.59 40.51 1789.59 0.00 437.08 41.53 15.19 3.64 3.64 4.05 

1-10 481.6 1789.59 13.39 11.57 14331.68 1801.16 40.51 1766.16 0.00 437.08 41.39 15.13 3.63 3.63 4.04 

11-20 481.4 1766.16 11.89 10.27 14229.17 1776.42 40.51 1741.42 0.00 437.08 41.23 15.07 3.62 3.62 4.02 

21-31 481.2 1741.42 10.28 9.77 14120.98 1751.19 40.51 1712.69 0.00 437.08 41.06 15.01 3.96 3.96 4.00 

1-10 481.0 1712.69 9.20 7.95 13995.28 1720.64 41.09 1685.14 0.00 437.08 40.86 15.15 3.64 3.64 4.04 

11-20 480.8 1685.14 7.81 6.75 13874.75 1691.89 40.97 1656.49 0.00 437.08 40.67 15.04 3.61 3.61 4.01 

21-31 480.6 1656.49 6.47 6.15 13749.41 1662.63 42.09 1622.63 0.00 437.08 40.47 15.37 4.06 4.06 4.10 

1-10 480.3 1622.63 5.36 4.63 13601.30 1627.27 41.40 1591.50 0.00 437.08 40.24 15.03 3.61 3.61 4.01 

11-20 480.1 1591.50 4.10 3.54 13465.08 1595.04 42.82 1558.04 0.00 437.08 40.02 15.47 3.71 3.71 4.13 

21-28 479.9 1558.04 3.47 2.40 13318.71 1560.43 47.74 1527.43 0.00 437.08 39.79 17.15 3.29 3.29 4.57 

1-10 479.6 1527.43 7.59 6.56 13184.82 1533.99 46.30 1493.99 0.00 437.08 39.58 16.54 3.97 3.97 4.41 

11-20 479.4 1493.99 3.95 3.41 13038.53 1497.40 46.30 1457.40 0.00 437.08 39.35 16.44 3.95 3.95 4.38 

21-31 479.1 1457.40 2.39 2.27 12878.46 1459.67 44.19 1417.67 0.00 437.08 39.10 15.59 4.12 4.12 4.16 

1-10 478.8 1417.67 2.07 1.79 12704.65 1419.46 46.30 1379.46 0.00 437.08 38.83 16.22 3.89 3.89 4.33 

11-20 478.5 1379.46 1.60 1.39 12526.98 1380.85 46.30 1340.85 0.00 437.08 38.55 16.11 3.87 3.87 4.29 

21-30 478.2 1340.85 1.11 0.96 12332.01 1341.81 46.30 1301.81 0.00 437.08 38.24 15.98 3.83 3.83 4.26 

1-10 477.9 1301.81 0.78 0.68 12134.90 1302.49 52.08 1257.49 0.00 437.08 37.93 17.83 4.28 4.28 4.77 

11-20 477.5 1257.49 0.26 0.23 11911.10 1257.71 52.08 1212.71 0.00 437.08 37.58 17.66 4.24 4.24 4.80 

21-31 477.1 1212.71 0.12 0.11 11685.03 1212.82 210.44 1012.82 0.00 437.08 37.22 70.69 18.66 18.66 19.47 

1-10 475.3 1012.82 0.09 0.07 10614.34 1012.90 231.48 812.90 0.00 437.08 35.59 74.35 17.84 17.84 21.90 

11-20 473.3 812.90 32.30 27.91 9124.45 840.81 231.48 640.81 0.00 437.08 33.67 70.34 16.88 16.88 22.51 

21-30 471.2 640.81 134.02 115.79 7403.65 756.60 239.63 549.56 0.00 437.08 31.69 68.53 16.45 16.45 24.00 

Spill 

Peaking 

Hours 

3712.89 4.51 306.18 302.84 1.59 

Annexure 7.4/9

1848.94 Load 

Factor 



Head 

Loss 


PERIOD 

Jul-93 

Aug-93 

Sep-93 

Oct-93 

Nov-93 

Dec-93 

Jan-94 

Feb-94 

Mar-94 

Apr-94 

May-94 

Jun-94 

Reservoir 

Level 

Initial 

Storage 


Outflow 



Reservoir 

disch.) 

Tail Water 

Level 



m/c avail. 


1-10 471.0 629.71 236.91 204.69 7273.41 834.40 236.11 630.40 0.00 437.08 31.55 67.22 16.13 16.13 23.72 

11-20 471.0 630.40 396.40 342.49 7281.51 972.89 238.29 767.01 0.00 437.08 31.55 67.86 16.29 16.29 23.94 

21-31 472.8 767.01 110.16 104.70 8782.47 871.70 244.14 639.67 0.00 437.08 33.23 73.21 19.33 19.33 23.90 

1-10 471.1 639.67 389.70 336.70 7390.31 976.37 237.32 771.32 0.00 437.08 31.67 67.84 16.28 16.28 23.80 

11-20 472.9 771.32 907.20 783.82 8814.64 1555.14 242.95 1345.24 0.00 437.08 33.27 72.94 17.51 17.51 23.77 

21-31 478.2 1345.24 284.80 270.67 12354.17 1615.91 260.55 1368.28 0.00 437.08 38.27 90.00 23.76 22.57 24.00 

1-10 478.4 1368.28 770.20 665.45 12470.53 2033.73 259.32 1809.68 0.00 437.08 38.46 90.00 21.60 20.52 24.00 

11-20 481.7 1809.68 433.30 374.37 14418.02 2184.06 240.16 1848.94 147.70 437.08 41.52 90.00 21.60 20.52 24.00 

21-30 482.0 1848.94 982.90 849.23 14569.17 2698.16 238.77 1848.94 744.13 437.08 41.76 90.00 21.60 20.52 24.00 

1-10 482.0 1848.94 233.60 201.83 14569.17 2050.77 238.77 1844.47 0.00 437.08 41.76 90.00 21.60 20.52 24.00 

11-20 482.0 1844.47 163.51 141.27 14551.96 1985.74 162.04 1845.74 0.00 437.08 41.74 61.03 14.65 14.65 16.28 

21-31 482.0 1845.74 65.89 62.62 14556.86 1908.36 62.53 1848.93 0.00 437.08 41.74 23.56 6.22 6.22 6.28 

1-10 482.0 1848.93 37.70 32.57 14569.15 1881.51 75.23 1816.51 0.00 437.08 41.76 28.36 6.81 6.81 7.56 

11-20 481.8 1816.51 30.31 26.19 14444.28 1842.69 75.23 1777.69 0.00 437.08 41.57 28.22 6.77 6.77 7.53 

21-30 481.5 1777.69 23.88 20.63 14279.65 1798.32 75.23 1733.32 0.00 437.08 41.31 28.05 6.73 6.73 7.48 

1-10 481.2 1733.32 18.41 15.91 14085.54 1749.23 75.23 1684.23 0.00 437.08 41.00 27.84 6.68 6.68 7.42 

11-20 480.8 1684.23 13.38 11.56 13870.77 1695.79 75.23 1630.79 0.00 437.08 40.66 27.61 6.63 6.63 7.36 

21-31 480.4 1630.79 12.73 12.10 13636.97 1642.89 68.39 1577.89 0.00 437.08 40.29 24.87 6.57 6.57 6.63 

1-10 480.0 1577.89 11.47 9.91 13405.54 1587.79 75.23 1522.79 0.00 437.08 39.93 27.11 6.51 6.51 7.23 

11-20 479.6 1522.79 15.67 13.54 13164.52 1536.33 75.23 1471.33 0.00 437.08 39.55 26.85 6.44 6.44 7.16 

21-31 479.2 1471.33 12.63 12.01 12939.38 1483.34 68.39 1418.34 0.00 437.08 39.20 24.19 6.39 6.39 6.45 

1-10 478.8 1418.34 8.52 7.36 12707.54 1425.69 75.23 1360.69 0.00 437.08 38.83 26.36 6.33 6.33 7.03 

11-20 478.4 1360.69 8.01 6.92 12432.22 1367.61 75.23 1302.61 0.00 437.08 38.40 26.07 6.26 6.26 6.95 

21-28 477.9 1302.61 6.25 4.32 12138.95 1306.93 94.04 1241.93 0.00 437.08 37.93 32.20 6.18 6.18 8.62 

1-10 477.4 1241.93 4.36 3.77 11832.55 1245.69 75.23 1180.69 0.00 437.08 37.45 25.43 6.10 6.10 6.94 

11-20 476.8 1180.69 3.25 2.80 11523.37 1183.50 75.23 1118.50 0.00 437.08 36.96 25.10 6.02 6.02 6.98 

21-31 476.3 1118.50 2.39 2.27 11209.34 1120.77 68.39 1055.77 0.00 437.08 36.47 22.51 5.94 5.94 6.39 

1-10 475.8 1055.77 1.58 1.36 10892.61 1057.13 69.44 997.13 0.00 437.08 35.97 22.54 5.41 5.41 6.53 

11-20 475.2 997.13 1.72 1.49 10497.42 998.62 69.44 938.62 0.00 437.08 35.44 22.21 5.33 5.33 6.58 

21-30 474.6 938.62 2.36 2.04 10061.36 940.65 69.44 880.65 0.00 437.08 34.87 21.86 5.25 5.25 6.64 

1-10 474.0 880.65 1.50 1.30 9629.40 881.95 69.44 821.95 0.00 437.08 34.32 21.51 5.16 5.16 6.69 

11-20 473.4 821.95 0.68 0.58 9191.93 822.53 69.44 762.53 0.00 437.08 33.75 21.16 5.08 5.08 6.75 

21-31 472.8 762.53 0.35 0.33 8749.15 762.87 63.13 702.87 0.00 437.08 33.18 18.91 4.99 4.99 6.18 

1-10 472.0 702.87 0.68 0.59 8132.24 703.45 69.44 643.45 0.00 437.08 32.48 20.36 4.89 4.89 6.88 

11-20 471.2 643.45 80.15 69.25 7434.71 712.70 69.44 652.70 0.00 437.08 31.72 19.88 4.77 4.77 6.96 

21-30 471.3 652.70 1200.00 1036.80 7543.30 1689.50 240.21 1481.96 986.40 437.08 31.84 69.03 16.57 16.57 24.00 

Peaking 

Hours 

4577.18 18.91 370.36 364.86 6.18 

Annexure 7.5/9

1848.94 Load 

Factor 



Head 

Loss 


PERIOD 

Reservoir 

Level 

Initial 

Storage 

Inflow in 


Reservoir 

Total storage 

Outflow 

(Turbine 

disch.) 

Net storage Spill 

Tail Water 

Level 



m/c avail. 

Peaking 

Hours 

Jul-94 

Aug-94 

Sep-94 

Oct-94 

Nov-94 

Dec-94 

Jan-95 

Feb-95 

Mar-95 

Apr-95 

May-95 

Jun-95 



1-10 471.0 629.71 667.00 576.29 7273.41 1206.00 239.10 999.42 0.00 437.08 31.55 68.07 16.34 16.34 24.00 

11-20 475.2 999.42 2091.50 1807.06 10514.45 2806.47 253.50 1848.94 854.76 437.08 35.46 81.12 19.47 19.47 24.00 

21-31 482.0 1848.94 1456.80 1384.54 14569.17 3233.48 238.79 1848.94 1218.01 437.08 41.76 90.00 23.76 22.57 24.00 

1-10 482.0 1848.94 2081.30 1798.24 14569.17 3647.18 238.77 1848.94 1842.53 437.08 41.76 90.00 21.60 20.52 24.00 

11-20 482.0 1848.94 1025.10 885.69 14569.17 2734.62 238.77 1848.94 786.33 437.08 41.76 90.00 21.60 20.52 24.00 

21-31 482.0 1848.94 666.60 633.54 14569.17 2482.48 238.79 1848.94 427.81 437.08 41.76 90.00 23.76 22.57 24.00 

1-10 482.0 1848.94 558.30 482.37 14569.17 2331.31 238.77 1848.94 319.53 437.08 41.76 90.00 21.60 20.52 24.00 

11-20 482.0 1848.94 296.90 256.52 14569.17 2105.46 238.77 1848.94 58.13 437.08 41.76 90.00 21.60 20.52 24.00 

21-30 482.0 1848.94 158.59 137.02 14569.17 1985.96 238.77 1779.66 0.00 437.08 41.76 90.00 21.60 20.52 24.00 

1-10 481.5 1779.66 220.96 190.91 14288.25 1970.57 140.78 1848.94 0.00 437.08 41.32 52.50 12.60 12.60 14.00 

11-20 482.0 1848.94 129.88 112.22 14569.17 1961.15 129.88 1848.93 0.00 437.08 41.76 48.96 11.75 11.75 13.05 

21-31 482.0 1848.93 78.89 74.98 14569.16 1923.91 78.88 1848.94 0.00 437.08 41.76 29.73 7.85 7.85 7.93 

1-10 482.0 1848.94 49.13 42.45 14569.17 1891.39 49.13 1848.94 0.00 437.08 41.76 18.52 4.44 4.44 4.94 

11-20 482.0 1848.94 37.49 32.39 14569.16 1881.33 46.30 1841.33 0.00 437.08 41.76 17.45 4.19 4.19 4.65 

21-30 481.9 1841.33 26.11 22.56 14539.87 1863.89 46.30 1823.89 0.00 437.08 41.72 17.43 4.18 4.18 4.65 

1-10 481.8 1823.89 22.80 19.70 14472.71 1843.59 46.30 1803.59 0.00 437.08 41.61 17.39 4.17 4.17 4.64 

11-20 481.7 1803.59 19.84 17.14 14392.92 1820.72 46.30 1780.72 0.00 437.08 41.48 17.33 4.16 4.16 4.62 

21-31 481.5 1780.72 17.17 16.31 14292.91 1797.04 42.09 1757.04 0.00 437.08 41.33 15.70 4.14 4.14 4.19 

1-10 481.3 1757.04 16.46 14.22 14189.29 1771.26 46.30 1731.26 0.00 437.08 41.16 17.20 4.13 4.13 4.59 

11-20 481.2 1731.26 22.02 19.02 14076.53 1750.28 46.30 1710.28 0.00 437.08 40.99 17.13 4.11 4.11 4.57 

21-31 481.0 1710.28 14.85 14.12 13984.75 1724.40 42.09 1684.40 0.00 437.08 40.84 15.51 4.10 4.10 4.14 

1-10 480.8 1684.40 18.85 16.29 13871.51 1700.69 46.30 1660.69 0.00 437.08 40.66 16.99 4.08 4.08 4.53 

11-20 480.6 1660.69 11.12 9.61 13767.76 1670.29 46.30 1630.29 0.00 437.08 40.50 16.92 4.06 4.06 4.51 

21-28 480.4 1630.29 8.08 5.58 13634.81 1635.88 57.87 1595.88 0.00 437.08 40.29 21.04 4.04 4.04 5.61 

1-10 480.1 1595.88 9.27 8.01 13484.25 1603.89 46.30 1563.89 0.00 437.08 40.05 16.74 4.02 4.02 4.46 

11-20 479.9 1563.89 41.49 35.85 13344.30 1599.74 46.30 1559.74 0.00 437.08 39.83 16.64 3.99 3.99 4.44 

21-31 479.9 1559.74 14.66 13.93 13326.13 1573.67 52.61 1523.67 0.00 437.08 39.80 18.90 4.99 4.99 5.04 

1-10 479.6 1523.67 8.63 7.46 13168.35 1531.13 57.87 1481.13 0.00 437.08 39.56 20.66 4.96 4.96 5.51 

11-20 479.3 1481.13 4.81 4.15 12982.25 1485.28 57.87 1435.28 0.00 437.08 39.26 20.51 4.92 4.92 5.47 

21-30 479.0 1435.28 2.99 2.58 12781.68 1437.86 57.87 1387.86 0.00 437.08 38.95 20.34 4.88 4.88 5.42 

1-10 478.6 1387.86 1.75 1.51 12569.40 1389.37 57.87 1339.37 0.00 437.08 38.61 20.17 4.84 4.84 5.38 

11-20 478.2 1339.37 2.00 1.72 12324.57 1341.10 127.31 1231.10 0.00 437.08 38.23 43.92 10.54 10.54 11.71 

21-31 477.3 1231.10 1.51 1.43 11777.87 1232.53 210.44 1032.53 0.00 437.08 37.37 70.97 18.74 18.74 19.43 

1-10 475.5 1032.53 0.87 0.75 10761.20 1033.28 231.48 833.28 0.00 437.08 35.78 74.74 17.94 17.94 21.84 

11-20 473.5 833.28 5.73 4.95 9276.36 838.23 231.48 638.23 0.00 437.08 33.86 70.75 16.98 16.98 22.45 

21-30 471.1 638.23 77.22 66.71 7373.38 704.94 87.07 629.71 0.00 437.08 31.65 24.88 5.97 5.97 8.73 

4339.61 15.51 376.10 368.32 4.14 

Annexure 7.6/9

1848.94 Load 

Factor 



Head 

Loss 


PERIOD 

Jul-95 

Aug-95 

Sep-95 

Oct-95 

Nov-95 

Dec-95 

Jan-96 

Feb-96 

Mar-96 

Apr-96 

May-96 

Jun-96 

Reservoir 

Level 

Initial 

Storage 

Inflow in 


Reservoir 


Total storage 

Outflow 

(Turbine 

disch.) 

Net storage 

Tail Water 

Level 



m/c avail. 


1-10 471.0 629.71 89.15 77.03 7273.41 706.74 89.15 629.71 0.00 437.08 31.55 25.38 6.09 6.09 8.96 

11-20 471.0 629.71 490.74 424.00 7273.41 1053.71 239.10 847.13 0.00 437.08 31.55 68.07 16.34 16.34 24.00 

21-31 473.6 847.13 903.52 858.71 9379.57 1705.84 248.21 1469.93 0.00 437.08 34.00 76.16 20.11 20.11 24.00 

1-10 479.2 1469.93 1347.46 1164.21 12933.28 2634.14 254.48 1848.94 654.32 437.08 39.19 90.00 21.60 20.52 24.00 

11-20 482.0 1848.94 823.12 711.18 14569.17 2560.11 238.77 1848.94 584.35 437.08 41.76 90.00 21.60 20.52 24.00 

21-31 482.0 1848.94 859.79 817.14 14569.17 2666.08 238.77 1848.94 621.02 437.08 41.76 90.00 23.76 22.57 24.00 

1-10 482.0 1848.94 514.47 444.50 14569.17 2293.44 238.77 1848.94 275.70 437.08 41.76 90.00 21.60 20.52 24.00 

11-20 482.0 1848.94 601.75 519.91 14569.17 2368.85 238.77 1848.94 362.98 437.08 41.76 90.00 21.60 20.52 24.00 

21-30 482.0 1848.94 181.28 156.63 14569.17 2005.56 238.77 1799.26 0.00 437.08 41.76 90.00 21.60 20.52 24.00 

1-10 481.7 1799.26 84.19 72.74 14374.01 1872.00 240.54 1664.17 0.00 437.08 41.45 90.00 21.60 20.52 24.00 

11-20 480.7 1664.17 62.85 54.30 13783.03 1718.48 246.06 1505.88 0.00 437.08 40.52 90.00 21.60 20.52 24.00 

21-31 479.5 1505.88 50.61 48.10 13090.52 1553.98 105.22 1453.98 0.00 437.08 39.43 37.45 9.89 9.89 9.99 

1-10 479.1 1453.98 28.99 25.05 12863.47 1479.02 104.17 1389.02 0.00 437.08 39.08 36.74 8.82 8.82 9.80 

11-20 478.6 1389.02 24.82 21.44 12575.25 1410.46 104.17 1320.46 0.00 437.08 38.62 36.31 8.71 8.71 9.68 

21-30 478.0 1320.46 19.77 17.08 12229.08 1337.55 78.70 1269.55 0.00 437.08 38.08 27.05 6.49 6.49 7.21 

1-10 477.6 1269.55 17.00 14.69 11972.00 1284.24 57.87 1234.24 0.00 437.08 37.67 19.68 4.72 4.72 5.32 

11-20 477.3 1234.24 15.45 13.34 11793.72 1247.58 57.87 1197.58 0.00 437.08 37.39 19.53 4.69 4.69 5.34 

21-31 477.0 1197.58 39.31 37.36 11608.64 1234.94 52.61 1184.94 0.00 437.08 37.10 17.62 4.65 4.65 4.87 

1-10 476.9 1184.94 72.98 63.05 11544.82 1248.00 57.87 1198.00 0.00 437.08 37.00 19.32 4.64 4.64 5.37 

11-20 477.0 1198.00 69.34 59.91 11610.73 1257.90 57.87 1207.90 0.00 437.08 37.10 19.38 4.65 4.65 5.36 

21-31 477.1 1207.90 29.13 27.69 11660.75 1235.59 52.61 1185.59 0.00 437.08 37.18 17.65 4.66 4.66 4.87 

1-10 476.9 1185.59 21.23 18.34 11548.10 1203.93 57.87 1153.93 0.00 437.08 37.00 19.33 4.64 4.64 5.37 

11-20 476.6 1153.93 39.87 34.44 11388.24 1188.38 57.87 1138.38 0.00 437.08 36.75 19.20 4.61 4.61 5.39 

21-29 476.5 1138.38 16.22 12.62 11309.70 1150.99 64.30 1100.99 0.00 437.08 36.63 21.26 4.59 4.59 6.00 

1-10 476.1 1100.99 13.70 11.83 11120.93 1112.82 57.87 1062.82 0.00 437.08 36.33 18.98 4.55 4.55 5.42 

11-20 475.8 1062.82 8.69 7.51 10928.22 1070.33 57.87 1020.33 0.00 437.08 36.03 18.82 4.52 4.52 5.44 

21-31 475.4 1020.33 6.73 6.39 10670.28 1026.72 52.61 976.72 0.00 437.08 35.66 16.93 4.47 4.47 4.97 

1-10 475.0 976.72 4.39 3.79 10345.30 980.51 57.87 930.51 0.00 437.08 35.24 18.41 4.42 4.42 5.50 

11-20 474.5 930.51 3.58 3.10 10000.95 933.61 57.87 883.61 0.00 437.08 34.80 18.17 4.36 4.36 5.54 

21-30 474.0 883.61 3.67 3.17 9651.41 886.78 57.87 836.78 0.00 437.08 34.35 17.94 4.31 4.31 5.57 

1-10 473.5 836.78 2.41 2.08 9302.45 838.86 57.87 788.86 0.00 437.08 33.90 17.70 4.25 4.25 5.61 

11-20 473.0 788.86 0.95 0.82 8945.36 789.68 57.87 739.68 0.00 437.08 33.44 17.46 4.19 4.19 5.65 

21-31 472.5 739.68 0.90 0.86 8564.46 740.54 52.61 690.54 0.00 437.08 32.95 15.65 4.13 4.13 5.17 

1-10 471.8 690.54 0.81 0.70 7987.53 691.24 57.87 641.24 0.00 437.08 32.32 16.88 4.05 4.05 5.74 

11-20 471.2 641.24 73.14 63.19 7408.71 704.43 57.87 654.43 0.00 437.08 31.69 16.55 3.97 3.97 5.80 

21-30 471.3 654.43 30.82 26.63 7563.57 681.06 59.43 629.71 0.00 437.08 31.86 17.09 4.10 4.10 5.94 

Spill 

Peaking 

Hours 

4105.90 15.65 344.56 335.82 4.87 

Annexure 7.7/9

1848.94 Load 

Factor 



Head 

Loss 


PERIOD 

Jul-96 

Aug-96 

Sep-96 

Oct-96 

Nov-96 

Dec-96 

Jan-97 

Feb-97 

Mar-97 

Apr-97 

May-97 

Jun-97 

Reservoir 

Level 

Initial 

Storage 


Outflow 



Reservoir 

disch.) 

Tail Water 

Level 



m/c avail. 


1-10 471.0 629.71 63.65 54.99 7273.41 684.71 62.50 630.71 0.00 437.08 31.55 17.79 4.27 4.27 6.28 

11-20 471.0 630.71 209.56 181.06 7285.07 811.77 210.65 629.77 0.00 437.08 31.56 60.00 14.40 14.40 21.16 

21-31 471.0 629.77 434.89 413.32 7274.03 1043.08 238.79 816.13 0.00 437.08 31.55 67.99 17.95 17.95 23.99 

1-10 473.3 816.13 567.10 489.97 9148.59 1306.11 247.12 1092.60 0.00 437.08 33.70 75.16 18.04 18.04 24.00 

11-20 476.1 1092.60 752.80 650.42 11078.56 1743.02 256.36 1521.52 0.00 437.08 36.26 83.90 20.14 20.14 24.00 

21-31 479.6 1521.52 507.24 482.08 13158.97 2003.60 252.21 1763.90 0.00 437.08 39.54 90.00 23.76 22.57 24.00 

1-10 481.4 1763.90 398.98 344.72 14219.32 2108.62 241.97 1848.94 58.59 437.08 41.21 90.00 21.60 20.52 24.00 

11-20 482.0 1848.94 335.97 290.28 14569.17 2139.22 238.77 1848.94 97.20 437.08 41.76 90.00 21.60 20.52 24.00 

21-30 482.0 1848.94 102.81 88.83 14569.17 1937.77 102.81 1848.94 0.00 437.08 41.76 38.75 9.30 9.30 10.33 

1-10 482.0 1848.94 91.50 79.05 14569.16 1927.99 91.49 1848.94 0.00 437.08 41.76 34.48 8.28 8.28 9.20 

11-20 482.0 1848.94 46.27 39.98 14569.17 1888.92 46.27 1848.94 0.00 437.08 41.76 17.44 4.19 4.19 4.65 

21-31 482.0 1848.94 83.25 79.12 14569.17 1928.06 83.25 1848.94 0.00 437.08 41.76 31.38 8.28 8.28 8.37 

1-10 482.0 1848.94 35.33 30.53 14569.17 1879.47 35.34 1848.94 0.00 437.08 41.76 13.32 3.20 3.20 3.55 

11-20 482.0 1848.94 25.29 21.85 14569.16 1870.79 34.72 1840.79 0.00 437.08 41.76 13.09 3.14 3.14 3.49 

21-30 481.9 1840.79 20.25 17.49 14537.78 1858.28 46.30 1818.28 0.00 437.08 41.71 17.43 4.18 4.18 4.65 

1-10 481.8 1818.28 16.97 14.66 14451.11 1832.94 46.30 1792.94 0.00 437.08 41.58 17.37 4.17 4.17 4.63 

11-20 481.6 1792.94 15.49 13.38 14346.34 1806.32 46.30 1766.32 0.00 437.08 41.41 17.30 4.15 4.15 4.61 

21-31 481.4 1766.32 13.86 13.17 14229.90 1779.49 42.09 1739.49 0.00 437.08 41.23 15.66 4.13 4.13 4.18 

1-10 481.2 1739.49 11.63 10.05 14112.52 1749.54 46.30 1709.54 0.00 437.08 41.04 17.15 4.12 4.12 4.57 

11-20 481.0 1709.54 12.59 10.87 13981.48 1720.41 46.30 1680.41 0.00 437.08 40.84 17.06 4.10 4.10 4.55 

21-31 480.8 1680.41 11.98 11.39 13854.06 1691.80 42.09 1651.80 0.00 437.08 40.64 15.44 4.07 4.07 4.12 

1-10 480.6 1651.80 8.98 7.76 13728.89 1659.55 46.30 1619.55 0.00 437.08 40.44 16.90 4.06 4.06 4.51 

11-20 480.3 1619.55 7.13 6.16 13587.83 1625.72 46.30 1585.72 0.00 437.08 40.22 16.80 4.03 4.03 4.48 

21-28 480.1 1585.72 5.31 3.67 13439.80 1589.38 57.87 1549.38 0.00 437.08 39.98 20.88 4.01 4.01 5.57 

1-10 479.8 1549.38 4.40 3.80 13280.85 1553.19 46.30 1513.19 0.00 437.08 39.73 16.60 3.98 3.98 4.43 

11-20 479.5 1513.19 3.60 3.11 13122.49 1516.30 46.30 1476.30 0.00 437.08 39.48 16.50 3.96 3.96 4.40 

21-31 479.3 1476.30 2.48 2.35 12961.12 1478.65 52.61 1428.65 0.00 437.08 39.23 18.63 4.92 4.92 4.97 

1-10 478.9 1428.65 14.17 12.24 12752.68 1440.90 57.87 1390.90 0.00 437.08 38.90 20.32 4.88 4.88 5.42 

11-20 478.6 1390.90 7.20 6.22 12584.71 1397.11 57.87 1347.11 0.00 437.08 38.64 20.18 4.84 4.84 5.38 

21-30 478.3 1347.11 1.56 1.35 12363.64 1348.46 57.87 1298.46 0.00 437.08 38.29 20.00 4.80 4.80 5.33 

1-10 477.8 1298.46 1.52 1.32 12117.99 1299.78 57.87 1249.78 0.00 437.08 37.90 19.80 4.75 4.75 5.30 

11-20 477.4 1249.78 1.13 0.98 11872.18 1250.76 57.87 1200.76 0.00 437.08 37.51 19.59 4.70 4.70 5.33 

21-31 477.0 1200.76 0.75 0.72 11624.67 1201.47 178.87 1031.47 0.00 437.08 37.12 59.93 15.82 15.82 16.57 

1-10 475.5 1031.47 0.79 0.68 10753.33 1032.15 231.48 832.15 0.00 437.08 35.77 74.72 17.93 17.93 21.84 

11-20 473.5 832.15 1.06 0.91 9267.98 833.07 231.48 633.07 0.00 437.08 33.85 70.72 16.97 16.97 22.45 

21-30 471.0 633.07 64.93 56.10 7312.79 689.17 68.81 629.72 0.00 437.08 31.59 19.62 4.71 4.71 6.91 

Peaking 

Hours 

3753.57 13.09 311.43 308.08 3.49 

Annexure 7.8/9

1848.94 Load 

Factor 



Head 

Loss 


PERIOD 

Jul-97 

Aug-97 

Sep-97 

Oct-97 

Nov-97 

Dec-97 

Jan-98 

Feb-98 

Mar-98 

Apr-98 

May-98 

Jun-98 

Reservoir 

Level 

Initial 

Storage 

Inflow in 


Reservoir 


Total storage 

Outflow 

(Turbine 

disch.) 

Net storage 

Tail Water 

Level 



m/c avail. 


1-10 471.0 629.71 127.84 110.45 7273.41 740.17 127.31 630.17 0.00 437.08 31.55 36.25 8.70 8.70 12.79 

11-20 471.0 630.17 334.69 289.17 7278.74 919.34 239.12 712.74 0.00 437.08 31.55 68.09 16.34 16.34 24.00 

21-31 472.1 712.74 810.45 770.25 8248.17 1482.99 243.09 1251.96 0.00 437.08 32.61 71.54 18.89 18.89 24.00 

1-10 477.4 1251.96 1160.40 1002.59 11883.23 2254.55 260.80 1848.94 208.66 437.08 37.53 88.34 21.20 20.52 24.00 

11-20 482.0 1848.94 241.44 208.60 14569.17 2057.54 238.77 1848.94 2.67 437.08 41.76 90.00 21.60 20.52 24.00 

21-31 482.0 1848.94 690.94 656.67 14569.17 2505.61 238.79 1848.94 452.15 437.08 41.76 90.00 23.76 22.57 24.00 

1-10 482.0 1848.94 941.63 813.57 14569.17 2662.51 238.77 1848.94 702.86 437.08 41.76 90.00 21.60 20.52 24.00 

11-20 482.0 1848.94 401.63 347.01 14569.17 2195.95 238.77 1848.94 162.86 437.08 41.76 90.00 21.60 20.52 24.00 

21-30 482.0 1848.94 160.56 138.72 14569.17 1987.66 160.56 1848.94 0.00 437.08 41.76 60.52 14.52 14.52 16.14 

1-10 482.0 1848.94 92.03 79.51 14569.17 1928.45 92.03 1848.94 0.00 437.08 41.76 34.69 8.32 8.32 9.25 

11-20 482.0 1848.94 73.12 63.18 14569.17 1912.11 73.13 1848.93 0.00 437.08 41.76 27.56 6.61 6.61 7.35 

21-31 482.0 1848.93 87.64 83.29 14569.15 1932.23 87.64 1848.94 0.00 437.08 41.76 33.03 8.72 8.72 8.81 

1-10 482.0 1848.94 67.13 58.00 14569.16 1906.93 67.12 1848.94 0.01 437.08 41.76 25.30 6.07 6.07 6.75 

11-20 482.0 1848.94 93.62 80.89 14569.17 1929.83 93.62 1848.94 0.00 437.08 41.76 35.29 8.47 8.47 9.41 

21-30 482.0 1848.94 129.56 111.94 14569.17 1960.87 129.55 1848.94 0.01 437.08 41.76 48.83 11.72 11.72 13.02 

1-10 482.0 1848.94 267.55 231.16 14569.17 2080.10 238.77 1848.94 28.77 437.08 41.76 90.00 21.60 20.52 24.00 

11-20 482.0 1848.94 170.06 146.93 14569.17 1995.87 170.06 1848.94 0.00 437.08 41.76 64.10 15.38 15.38 17.09 

21-31 482.0 1848.94 130.05 123.60 14569.17 1972.54 130.05 1848.94 0.00 437.08 41.76 49.02 12.94 12.94 13.07 

1-10 482.0 1848.94 102.63 88.67 14569.17 1937.61 102.63 1848.94 0.00 437.08 41.76 38.68 9.28 9.28 10.32 

11-20 482.0 1848.94 57.60 49.76 14569.16 1898.70 57.59 1848.94 0.00 437.08 41.76 21.71 5.21 5.21 5.79 

21-31 482.0 1848.94 469.43 446.15 14569.17 2295.09 238.79 1848.94 230.64 437.08 41.76 90.00 23.76 22.57 24.00 

1-10 482.0 1848.94 135.89 117.41 14569.17 1966.35 135.89 1848.94 0.00 437.08 41.76 51.22 12.29 12.29 13.66 

11-20 482.0 1848.94 66.08 57.09 14569.17 1906.03 66.08 1848.94 0.01 437.08 41.76 24.91 5.98 5.98 6.64 

21-28 482.0 1848.94 52.78 36.48 14569.17 1885.42 52.78 1848.94 0.00 437.08 41.76 19.89 3.82 3.82 5.30 

1-10 482.0 1848.94 37.20 32.14 14569.16 1881.08 37.20 1848.94 0.00 437.08 41.76 14.02 3.36 3.36 3.74 

11-20 482.0 1848.94 42.59 36.80 14569.17 1885.74 42.59 1848.94 0.00 437.08 41.76 16.05 3.85 3.85 4.28 

21-31 482.0 1848.94 30.82 29.29 14569.17 1878.23 30.82 1848.94 0.00 437.08 41.76 11.62 3.07 3.07 3.10 

1-10 482.0 1848.94 26.11 22.55 14569.17 1871.49 30.09 1845.49 0.00 437.08 41.76 11.34 2.72 2.72 3.02 

11-20 482.0 1845.49 16.33 14.11 14555.90 1859.60 30.09 1833.60 0.00 437.08 41.74 11.34 2.72 2.72 3.02 

21-30 481.9 1833.60 10.94 9.46 14510.12 1843.06 115.74 1743.06 0.00 437.08 41.67 43.53 10.45 10.45 11.61 

1-10 481.2 1743.06 10.72 9.26 14128.13 1752.32 242.81 1542.53 0.00 437.08 41.07 90.00 21.60 20.52 24.00 

11-20 479.8 1542.53 8.34 7.21 13250.88 1549.74 251.27 1332.64 0.00 437.08 39.69 90.00 21.60 20.52 24.00 

21-31 478.1 1332.64 5.17 4.91 12290.58 1337.55 261.23 1089.28 0.00 437.08 38.17 90.00 23.76 22.57 24.00 

1-10 476.0 1089.28 2.96 2.56 11061.81 1091.84 255.56 871.04 0.00 437.08 36.24 83.58 20.06 20.06 23.96 

11-20 473.9 871.04 3.02 2.61 9557.76 873.65 248.17 659.23 0.00 437.08 34.23 76.66 18.40 18.40 23.94 

21-30 471.4 659.23 74.43 64.31 7619.94 723.54 108.60 629.71 0.00 437.08 31.92 31.29 7.51 7.51 10.85 

Spill 

Peaking 

Hours 

5375.88 11.34 467.50 456.77 3.02 

Annexure 7.9/9





CHAPTER - VIII 

POWER EVACUATION 

NH/CON/229 01/2004




CHAPTER - VIII 

POWER EVACUATION 



The Basania H.E. Project powerhouse will be of surface type. The scheme 

envisages installation of three generating units of 30MW each operating under a 

rated net head of 38m. The generating voltage proposed is 11KV for the power 

plant. This voltage will be stepped up to 132KV voltage level by three phase 

generator transformers. The generator transformers placed in the transformer 

deck shall be connected to the generators by means of segregated phase bus 

ducts. The HV bushing of transformer will be further connected to the switchyard 

through overhead conductor. Provision of three outgoing bays has been kept in 

switchyard for power evacuation from this project (Refer Plate 8.1). 

8.1 EXISTING POWER EVACUATION FACILITIES 

The Madhya Pradesh Electricity Board has established a high tension 

transmission network of 220/132 KV interconnecting all the generating stations 

and principal load centers. Mandla is a 132KV substation of MPSEB at a 

distance of 40 km (approx.) from the Basania H.E. Project. The major load 

centre Jabalpur where M/s PGCIL has a 400KV substation is around 100 km 

from Basania H.E. Project. 

8.2 PROPOSED EVACUATION ARRANGEMENT 

It is proposed to bring the power from Basania H.E. Project to 132KV Mandla 

substation at 132KV voltage level. For this three outgoing 132KV line, i.e. one 

double circuit and one single circuit is proposed. 

Accordingly provision for three outgoing bays has been kept at Basania H.E. 

Project. The Power Map of Madhya Pradesh & Transmission line Network of 

Mandla District are enclosed as Annexure – 8.1. 

CEA comments by issued vide letter no 29/34/2003/SP&PA/1226 dt 10.10.03 

and replies of NHPC are appended as Appendix – IX. 

NH/CON/229 40 01/2004





CHAPTER-IX 

ENVIRONMENTAL ASPECTS 

NH/CON/229 01/2004

INTRODUCTION 



CHAPTER-IX 

ENVIRONMENTAL ASPECTS 



The State of Madhya Pradesh lies between latitude 18 0 N to 26.5 0 N and longitudes 74 0 

E to 84.5 0 E. The main physical regions of the State are the Northern region, the Malwa 

plateau, the Narmada valley, the Satpura range and the Chhatisgarh plains. The 

Narmada valley is a long and narrow strip along the river Narmada, walled in by 

Vindhyas and the Satpura to North and South respectively and extending to a length of 

1072 km from Amarkantak to west of Barwani, with an average width of 40 km 

Narmada is one of the most important rivers of the State and is its lifeline possessing 

considerable water and power potential, which if developed to its optimum potential, 

would add to the prosperity of not only the state but the whole country. The total power 

generated by M.P is 3814 MW with another 1250 MW coming from the Central Sector. 

Location of the Project 

Basania HE project envisages construction of 55 m high dam on river Narmada , about 

3 km downstream of its confluence with river Burhner, with Full Reservoir Level (FRL) 

of 481.8 m, dam toe power house with an installed capacity of 90 MW. The proposed 

project is located in district Mandla (Block Mohgaon) which is located in the east-central 

part of Madhya Pradesh. The district lies between latitude 22 0 12’ to 23 0 12’ North and 

Longitude 80 0 18’ to 81 0 51’ East and has the maximum and minimum altitude of 887m 

and 443 m respectively, from the mean sea level. The proposed Dam and powerhouse 

sites lie between Latitude 22 0 42’ N to Longitude 80 0 30’ E. 

A district with a glorious history, Mandla comprises of numerous rivers and is endowed 

with rich forests. The district covers a length of about 133 km from north to south and 

182 m in breadth from east to west. It covers a total area of 8771 sq. km and consists of 

total population of 779414. There are 9 blocks 4 tehsils namely Mandla, Nainpur, 

NH/CON/229 41 01/2004





Bicchia and Niwas and 1214 inhabited villages. With the promulgation of Madhya 

Pradesh, reorganization of the district has been done and now the district has been 

bifurcated into Mandla and Dindori districts. The Tehsils Dindori and Shahpura and 

Block Mehandwani forms Dindori district while rest of the area forms Mandla district. 

PHYSICAL ENVIRONMENT 

Climate 

The region enjoys comparatively cool and exhilarating climate characterized by hot 

summer season and general dryness except in the south-west monsoon season. The 

cold season from December to February is followed by the hot season from March to 

about the middle of June. The period from mid June to September is the south-west 

monsoon season. October and November constitute the post- monsoon or retreating 

monsoon season. 

Maximum and minimum temperature observed at Mandla from the year 1999 to 2002 is 

as under (Table 9.1): 

Table 9.1 

Year Maximum Temperature 

( 0 C) 

Minimum Temperature 

NH/CON/229 42 01/2004 

( 0 C) 

1999 44.6 4.7 

2000 44.8 4.6 

2001 43.0 2.5 

2002 43.8 3.1 

During the monsoon season, relative humidity generally exceeds 75 %. The air 

becomes dry after the withdrawal of the monsoon. The driest part of the year is the 

summer season, when, in the afternoons relative humidity is less than 25%. Average 

rainfall recorded in the district Mandla, block Mohgaon in the year 1998-99, 1999-00, 

2000-01 and 2001-02 was 1193 mm, 1193 mm, 867.8 mm and 1169.9 mm 

respectively.

Topography 





Mandla district consists of a rugged high tableland in the eastern part of the Satpura 

hills. There is low altitude in the south-west corner of the district and the extreme upper 

valley of the Narmada in Dindori and Niwas tehsils is an undulating plain without much 

forest cover, broken by flat topped hills. The Narmada basin in general can be broadly 

divided into three distinct zones of more or less homogeneous topography: 

1. Upper zone: The basin upto Bargi area (14556 sq. km) 

2. Middle zone: The basin from Bargi to Narmadasagar area ( 45086 sq. km) 

3. Lower zone: The basin below Narmadasagar area (24294 sq. km) 

The proposed Basania Dam site is situated in upper zone . 

Soils 

TOPOGRAPHY OF THE PROJECT AREA UPSTREAM OF THE DAM 

Mandla district falls in the Northern Hilly agro-climatic region of the State. Some parts of 

the district have red & yellow, medium, black & skeletal medium/light soil types. In 

general, the district has Mixed Red & Black soil. Soil fertility status i.e fertility of soil with 

regard to availability of major nutrients viz. Nitrogen (N), Phosphorous (P) and 

Potassium (K) in the district is N- Medium, P- Low, K- High 

NH/CON/229 43 01/2004

Drainage 





The district lies almost entirely in the catchment of river Narmada and its numerous 

tributaries. The Narmada flows along the greater part of the district and Banjar, 

Burhner, Kharmer, Kikara and the Gour are its major tributaries. Among the southern 

tributaries, the Machrar, Chakar, Seoni rivers are important rivers. In the northern part, 

important tributaries are Silgi and Kanai. Starting as a small rivulet, the river Narmada 

flows in north-westerly direction from its source at Amarkantak for a distance of 120.69 

km upto Dindori, then it turns left and flows in westerly and south-westerly directions 

for another 104.50 km. Again it continues in a southerly direction near Mahadwani until 

it reaches the palace of Ramnagar now in ruins. From Ramnagar to Mandla town, the 

river has a straight reach, with high banks and clear and limpid water. At Mandla, the 

river turns North forming a loop around Mandla and continues in northerly direction upto 

Mohgaon before it again changes its direction towards the west. 

LANDUSE/LANDCOVER OF THE PROJECT AREA 

The landuse/landcover study was entrusted to National Remote Sensing Agency, 

Hyderabad with an objective to acquire IRS satellite (IRS IC/ID) LISS-III and PAN 

sensor digital data of the proposed project site and to make quick analysis of these data 

in terms of estimation of the submergence area at proposed FRL, identification of broad 

lanuse/landcover categories, estimation of area under each categories and mapping of 

each categories within and in immediate surrounding of the proposed submergence 

area Report of NRSA has been appended as Appendix - X. The details of Maps 

prepared are as under: 

Map 1(a) shows IRS ID PAN+LISS III merged satellite image on 1:50,000 scale 

covering the proposed hydropower site and its environ overlaid with FRL, location of 

dam and powerhouse sites. 

Map 1 (b) shows satellite derived landuse / landcover map on 1:50,000 scale covering 

7 km radius of the proposed dam site and the reservoir submergence area vis-à-vis 

proposed dam and powerhouse. 

NH/CON/229 44 01/2004





Map 1 (c) shows satellite derived landuse/landcover map on 1:50,000 scale covering 

reservoir submergence area vis-à-vis proposed dam and powerhouse. 

Map 1 (d) shows the location of Kanha National Park and the Phen Wildlife Sanctuary 

vis -à-vis the location of the dam and reservoir submergence area. 

The landuse / landcover categories of the submergence area and the area falling within 

7 km radius of the proposed dam site are given under Table – 9.2 and Table – 9.3 

respectively. 

Table – 9.2 

S.No. Landuse / Landcover category Area (ha.) % of the total area 

1. High dense forest 2556 12.6 

2. Open scrub 6668 37.3 

3. Barren/rock outcrop 1730 9.7 

4. Agriculture/Current fallow land 6033 33.7 

5. Water bodies 50 0.3 

6. River course including dry river 

bed 

1156 6.5 

Total 17893* 100 

*50 villages are getting affected due to submergence (Refer Map 1 (c) ) 

Table – 9.3 

S.No. Landuse / Landcover category Area (ha.) % of the total area 

1. High dense forest 4774 31.0 

2. Open scrub 5284 34.3 

3. Barren/rock outcrop 882 5.7 

4. Agriculture/Current fallow land 3860 25.0 

5. Water bodies 66 0.4 

6. River course including dry river 

bed 

559 3.6 

Total 15,425 100 

NH/CON/229 45 01/2004





It is observed that the agriculture land, which is about 30% of the total submergence 

area, dominates the landuse pattern of the submergence area. Agriculture land 

includes the current crop area and the current fallow lands. 

The area under forest cover is constitutes 13% of the submergence area. It is observed 

that the forest cover entirely comprises of dense forest category. 

37% of the submergence area is under open scrub land and 10% is under barren/rock 

outcrop landuse category. Much of these large tracts of open scrub lands and 

barren/rock outcrop are disused lands which will not have any environmental impact by 

this project. 

It is observed that the submergence area and immediate vicinity of the proposed dam 

are inhabited with human settlements which are well spread across the submergence 

area. The study area manifests not only the large clusters of villages, but isolated 

hamlets/settlements through out the submergence area. It is estimated that 50 villages 

are located within the proposed submergence area, apart from many isolated 

settlements. 

In addition to the above landuse/landcover categories, there are small water bodies 

(ponds) present in the submergence area with a spread of 50 ha. The area covered by 

the river course including the river bed constitutes 6% of the submergence area. 

BIOTIC ENVIRONMENT 

Flora 

As per the data collected from the State Forest Department, East and West Mandla 

district, the project area falls under the forest crop density of 0.3 to 0.7. Major floral 

species reported in the project area and its catchment are as under (Table 9.4): 

Table 9.4 

S.No. Botanical Name Common Name 

1. Tectona grandis Teak 

2. Terminalia chebula Harra 

3. Madhuca indica Mahua 

4. Terminalia tomentosa Saja 

5. Sterculia urens Karraiya 

NH/CON/229 46 01/2004



6. Adina cardifolia Haldu 

7. Anogeissus latifolia Dhaora 

8. Shorea robusta Sal 

9. Bombax malabaricum Semal 

10. Diospyros melanoxylon Tendu 

11. Grewia tiliaefolia Dhaman 

12. Butea monosperma Palas 

13. Schleichera oleosa Kusum 

14. Terminalia arjuna Arjun 

15. Terminalia bellerica Bahera 

16. Dendrocalamus strictus Bamboo 

17. Buchanania lanzan Achar 

18. Acacia catechu Khair 

19. Anogeissus pendula Kardhai 

20. Emblica officinalis Aonla 

21. Pterocarpus marsupium Bija 

22. Boswelia serrata Salai 

23. Lagerstroemia parviflora Landia 

LANDSCAPE OF THE PROJECT AREA 



NH/CON/229 47 01/2004



Tectona grandis (Teak) 



The forest quality of the district has been classified by the State Forest Department 

based on the height of the trees. The details are as under (Table – 9.5): 

Table – 9.5 

S.No. Height ( in m) Forest Quality Category 

1. > 30 1 st 

2. 25-30 II nd 

3. 20-25 III rd 

4. 15-20 IVA 

5. 12-15 IVB 

6. 9-12 VA 

7.

Fauna 



FOREST IN MADHYA PRADESH 



Major faunal species reported in the project area and its catchment is as under(Table 9.6) : 

Table – 9.6 

S.No. Zoological Name Common Name 

1. *Panthera tigris Tiger 

2. *Panthera pardus Panther 

3. Cuon alpinus Wild dog 

4. Bos gaurus Bison 

5. Axis axis Cheetal 

6. Cervus unicolor Sambar 

7. Boselaphus tragocamelus Nilgai 

8. *Melursus ursinus Sloth Bear 

9. Sus scrofa Wild Boar 

10. Presbytis entellus Langur 

NH/CON/229 49 01/2004



11. Hyeana hyeana Hyena 

12. Canis lupus Wolf 

13. Macaca mulatto Rhesus monkey 

14. Cervus duvauceli branderi Barasingha 



• Falls under the category of Schedule-I, as per Wildlife (Protection) Act, 1972 

MIXED FOREST IN THE CATCHMENT 

NH/CON/229 50 01/2004

Fisheries 





• Mandla district where proposed project is located falls under low habitat zone for 

Tiger 

Following fish species are reported in the river Narmada (Table 9.7): 

Table – 9.7 

S.No. Zoological Name Common Name 

1. Catla catla Catla 

2. Labeo rohita Rohu 

3. Cirrhina mirgala Mirgal 

4. Labeo calvasu Calvasu 

5. Wallago attu Padin 

6. Ophiciphalus marulious Sanwal 

7. Clarious magur Magur 

8. Mystus singhala Singhal 

9. Etropinistic phosilish Katai 

10. *Barbus tor Mahaseer 

11. Chela bacela Chela 

*Mandla 

NH/CON/229 51 01/2004





* Sometimes reported from the higher reaches of the river near Maheshwar. Never reported 

from the project area. 

Some of these fish are of commercial importance and are used by the local for food and 

sustenance. No migratory fish species are reported from the river in the project area. 

Water Quality 

The water quality of Narmada river at Manot and river Burhner at Mohgaon was 

conducted during 1994-95 to 1998-99, to ascertain the physico-chemical property of 

river water in the vicinity of the proposed project area prior to the construction of the 

project. The test results are as under(Table 9.8 & Table 9.9): 

Table 9.8 - River Narmada at Manot 

S.No. Parameter Unit Average Value 

Summer Monsoon Winter 

1. pH - 8.40 8.18 8.31 

2. TDS mg/l 206 125 158 

3. K + ppm 0.99 1.32 0.83 

4. Na + ppm 10.92 6.19 7.99 

5. Ca ++ ppm 29.47 22.23 28.91 

6. Mg ++ ppm 12.78 6.90 9.50 

7. Fe ++ ppm 0.00 0.00 0.00 

8. NH4 + ppm 0.03 0.03 0.06 

9. CO3 - ppm 10.82 2.46 8.98 

10. HCO 3 ppm 162.2 106.8 133.7 

11. Cl - ppm 6.99 5.67 6.35 

12. SO4 - ppm 4.21 4.28 3.58 

13. NO3 - ppm 0.74 1.39 1.05 

14. PO4 - ppm 0.03 0.08 0.06 

15. COD ppm 27.21 22.17 22.22 

16. BOD ppm 1.08 1.13 1.21 

17. DO ppm 9.04 7.72 6.72 

NH/CON/229 52 01/2004



A VIEW OF RIVER NARMADA 

Table 9.9 - River Burhner at Mohgaon 

S.No. Parameter Unit Average for the period 



1994-95 to 1998-99 


1. pH - 8.27 8.09 8.24 

2. T.D.S mg/l 196 115 145 

3. K + ppm 1.50 1.34 0.98 

4. Na + ppm 10.58 5.20 7.21 

5. Ca ++ ppm 29.87 18.64 27.08 

6. Mg ++ ppm 12.46 6.36 8.50 

7. Fe ++ ppm 0.00 0.00 0.00 

8. NH4 + ppm 0.02 0.03 0.04 

9. CO3 - ppm 8.96 1.19 6.57 

10. HCO 3 ppm 155.1 127.5 119.9 

11. Cl - ppm 7.24 5.67 6.10 

12. SO4 - ppm 4.34 3.86 2.23 

13. NO3 - ppm 1.39 0.95 0.44 

14. PO4 - ppm 0.03 0.07 0.03 

NH/CON/229 53 01/2004



S.No. Parameter Unit Average for the period 



1994-95 to 1998-99 


15. COD ppm 23.79 22.76 22.53 

16. BOD ppm - - - 

17. DO ppm - - - 

Test results indicate that all the parameters are within the desirable limit as prescribed 

by the Bureau of Indian Standards for drinking water and as such the river water is 

good for the sustenance of aquatic ecology. 

SOCIO-ECONOMIC ASPECTS 

Demographic details 

District Mandla consists of 4 tehsils namely Nainpur, Mandla, Bicchia and Niwas with 

total number of 1234 villages. As per the District census report of the year 2002, total 

population of Mandla district, with the geographical area of 8771sq. km, is 779414. 

Density of population is 89 per sq. km. Mohaon block under tahsil Mandla, where 

Basania project is proposed has the population of 167663 with the population density of 

104 per sq. km. Male and female population in the rural and urban areas of the region 

are as under: 

District Mandla 

Rural Urban 


352338 351132 703470 39256 36688 75944 

(i) Block Mohgaon 

Rural Urban 


352338 351132 703470 39256 36688 75944 

NH/CON/229 54 01/2004





Majority of the population in the district practice Hinduism (88.47%) followed by 

Muslims (1.23%), Sikhs (0.55%), , Jains (0.18%), Christians (0.04%), Buddhists 

(0.01%). As per the census data of the year 1991, Scheduled caste population of the 

district is 37981, out of which 19543 are males and 18438 are females. Scheduled tribe 

population of the district is 451193, out of which 223691 are males and 227502 are 

females. 

Ethnographic details 

Gonds and Baigas are most significant tribes in the district. Amongst them Gonds are 

well settled and economically better than any other communities. Gonds were earlier 

mostly forest-dwellers but are at present settled agriculturists. Their staple food is millet 

and boiled rice. Both vegetarian and non-vegetarian food is common amongst them. 

The clans are usually named after some animals or plants. Common clans among the 

Gonds are Markam (Mango tree), Tekam (Teak tree), Netam (the dog), Warkara (wild 

cat) and so on. The Gonds have highly developed aesthetic sense. They indulge in 

merry making which is manifested in dancing and singing and in celebration of festivals 

like Holi, Megnath jayanti etc. The dead person, whether male or female is buried with 

face upward, head to the north and feet to the south. Folk dance, folk songs and folk 

music play vital role in the culture life of Gonds. It is through music and dance that they 

keep themselves occupied in the evenings. Folk music and dance give expression to 

their innermost feelings, their love and sorrows, their natural affections and ideas. Folk 

dances of Gonds are popularly called as Karma. Festivals celebrated by Gonds are 

Hareli- festival of rain, Khyania, Rakhi, Dashera, Mela Madai, Chait Gal and Nawa. 

Agriculture 

Major crops cultivated in the district are paddy, wheat, maize and jowar amongst 

cereals; tur, urad and moong amongst pulses, while soyabean , groundnut and 

mustard amongst oilseeds. Commercial crops of the district are cotton and sugarcane. 

Horticulture produce of the district is papaya, banana, oranges, mango and grapes. 

Literacy 

District Mandla has the total literacy rate of 59.85 % . Percentage of male and female 

literates in the district are 74.38% and 45.39% respectively. Total literacy rate in the 

NH/CON/229 55 01/2004





rural areas of the district is 56.71%. 72.11% males and 41.50% females in the rural 

areas are literate. Total literacy rate in the urban areas of the district is 85.83%. 

92.65% males and 78.67% females in the urban areas of the district are literate. 

Post & Telegraph 

As per the census data of the year 2001-2002, distric t Mandla has1 Head Post office, 

117 Branch Post Offices, 5 Tele-graph offices, 194 Public call offices and 5825 

telephone connections. 

Public Health Delivery System 

As per the census data of the year 2001-02 , district Mandla has 1 Allopathic Hospital, 8 

Community Health Centres, 30 Primary Health Centres, 248 health sub-centres and 29 

Ayurvedic/Homeopathic and Unani health clinics. 

Socio-economic profile of the project area 

At FRL 482 m, total 50 villages and some isolated settlements are likely to get affected 

due to submergence. About 6033 ha. of agriculture land shall get affected due to 

submergence. Detailed socio-economic survey shall however be undertaken at the time 

of Environmental Impact Assessment studies, to ascertain the exact number of villages 

and population getting affected due to project construction. 

SETTLEMENTS IN THE PROJECT AREA 

NH/CON/229 56 01/2004



PREDICTION OF ENVIRONMENTAL IMPACTS 



The construction activities at project viz. construction of project components, 

excavations, quarrying, etc. may result in degradation of land, soil erosion, 

deforestation, loss of soil fertility etc. if the activities are not carried out in a planned 

manner. Impoundment/ submergence of land due to construction of dam will involve 

forest/ private and agriculture land and therefore Land-use pattern may change. 

Impacts on land environment 

Construction of dam will submergence about 50 villages, 6033 ha agriculture land, and 

2256 ha high dense forest. Other categories of land getting submerged are open scrub 

( 6668 ha.), Barren/rock outcrop (1730 ha.), Water bodies ( 50 ha.) and river course 

including dry river bed (1156 ha.). Besides this, some portion of land shall be acquired 

for the construction of other project appurtenances. The exact land getting affected due 

to project construction including submergence could only be ascertained after detailed 

Environment Impact Assessment study of the project. Because study through satellite 

imageries involves usage of certain software programs which have their own limitations. 

A provision of 15000 ha has been kept for acquisition of land based on previous DPR 

prepared by MPEB. Actual land survey shall be required to be taken up at DPR stage. 

In addition to above about 46 km of the road connecting Mandla and Dindori districts is 

estimated to get affected due to submergence apart from many other village roads/cart 

tracks etc. Since there are more than 50 villages situated in the submergence area are 

inhabited and are interconnected by these roads/cart tracks, the site development may 

involve large re-construction activities. 

Impact on Water Environment 

Water quality test results indicate that the water is of good quality and is free from any 

kind of organic/inorganic and chemical pollution, and is good for the sustenance of 

aquatic life. However, during the construction phase, there may be some instances of 

excavated and quarried material getting washed away along with the rain water that 

may cause turbidity or sedimentation downstream. Natural sedimentation emanating 

from severely degraded Catchment area is one of the important issues to be 

addressed. Also the problem of waste disposal and management (human excreta and 

NH/CON/229 57 01/2004





domestic sewage) due to congregation of large population of migrant labourers may be 

encountered. Proper waste management measures are required to be implemented 

during the construction phase of the project so as to protect water body from pollution 

No migratory fish species are reported from the river Narmada in the vicinity of the 

project area, hence, construction of dam will not cause any impact on the fish species. 

In fact resident fishes will be increased due to the creation of the reservoir. 

Impact on Air Environment 

The impact on air environment shall be temporary and shall last till the construction 

activities are in progress. Dust emanating from crushers, excavations, blasting, and 

fugitive emission from the captive power supply like D.G sets etc. may affect the micro- 

environment of the area of influence. Proper mitigatory measures are required to be 

ensured by the contractor undertaking the construction activities so that no major air 

pollution is caused due to construction activities. 

Impact on Flora and Fauna 

The project will tentatively involve 1000 ha. of forest land under submergence. Some 

portion of forest land will also be required for the construction of project components. 

This will require substantial clearing of forest area. No major impact on flora is 

anticipated as the area mostly supports common tree species. Majority of the species 

occurring in the submergence area are widely distributed in the region and are very 

common species such as Teak, Sal, Karraiya, Mahua, Haldu etc. Proper afforestation 

measures have to be ensured so that the impact on flora in and around the vicinity of 

the project gets compensated. 

Some animal species listed under Schedule-I of the Wildlife (Protection) Act , 1972 viz. 

Panthera tigris, Panthera pardus & Melursus ursinus are reported from the project 

area. Proper wildlife conservation and management measures shall be required to be 

implemented so as to minimise the impacts on the fauna, if any. 

NH/CON/229 58 01/2004





Detailed survey is required to be conducted during the EIA study to ascertain the 

impacts on flora and fauna of the project area. 

No portion of Wildlife Sanctuary, National Park, Tiger Reserve, Biosphere reserve etc. 

is falling within 7 km radius from the periphery of the project area including the 

reservoir. Nearest National Park i.e Kanha National Park and Phen Wildlife sanctuary 

are located 62km and 64 km respectively, downstream of the proposed dam. 

Socio-economic impacts 

At FRL 482 m about 50 villages are getting affected due to submergence. Detailed 

socio-economic survey is required to be conducted to ascertain the exact no of 

families/households getting affected / displaced and the exact area of private, 

government and forest land getting affected due to project construction including 

submergence. 

No sites of archaeological and religious importance is falling under the project area. 

Impact on Noise Environment 

The impact on ambient noise levels are anticipated only during the project construction 

due to the operation of various construction equipment. Likewise noise due to 

quarrying, blasting, vehicular movement etc. may have some adverse impacts on the 

ambient noise levels in the area. Proper mitigatory measures shall be implemented to 

contain noise levels during construction phase. 

MITIGATORY MEASURES (ENVIRONMENT MANAGEMENT PLAN) 

Detailed Environment Impact Assessment studies are required to be conducted so as 

to assess the impact of the project on environement/ social aspects. Based on the 

findings of the comprehensive EIA study following mitigatory (Environment 

Management) plans would be required to be formulated: 

1. Compensatory Afforestation Scheme 

2. Catchment Area Treatment Plan 

NH/CON/229 59 01/2004



3. Resettlement & Rehabilitation Plan 

4. Free Fuel Distribution 

5. Biodiversity Conservation Plan 

6. Fish Management 

7. Public Health/Health Delivery System 



8. Stabilization of Quarry sites/construction areas & Muck disposal sites 

9. Green Belt Development & Voluntary Afforestation 

10. Disaster Management Plan 

ENVIRONMENTAL COST 

A provision of Rs. 3364 lakhs has been made for the implementation of various 

environmental management plans. 

NH/CON/229 60 01/2004





CHAPTER X 

INFRASTRUCTURE 

NH/CON/229 01/2004



CHAPTER X 

INFRASTRUCTURE 



The proposed Basania HE Project is located in Mandla district of Madhya 

Pradesh. Mandla is a tribal district of the State and is on Jabalpur – Bilaspur 

National Highway (NH-12). Mandla is about 80 km from Jabalpur. The 

proposed location of project is about 30 kms from District Headquarter of 

Mandla. 

Being District headquarter it has many state Government departments, schools, 

hospitals and primary health centers. In the villages of Mandla district schools, 

banks, post offices, telephone exchange and other such establishments are 

available. 

The Basania village near which the project is proposed is about 30 km from 

Mandla and an all weather road connects Mandla with Basania. Presently, 

transportation facilities between Mandla and Basania is not regular and mostly 

private / hired vehicles are available. The nearest railway station is Mandla on 

Jabalpur – Gondia narrow gauge line. The group conversion may help during 

the construction of Basania project for transportation of men, machines and 

materials. 

Mandla is having a 132 kV sub station of MPSEB which can be considered as a 

source of construction power. Otherwise a dedicated Diesel power house can 

be constructed for providing necessary construction power. The power after 

construction of project can also be evacuated from this substation. 

Thus, it shall be seen that almost all basic infrastructure facilities are available 

near project site. 

NH/CON/229 61 01/2004





CHAPTER XI 

CONSTRUCTION PLANNING & SCHEDULE 

NH/CON/229 01/2004



CHAPTER XI 



CONSTRUCTION PLANNING & SCHEDULE 

11.0 The Equipment Planning & Construction Methodology has been developed on 

following consideration. 

1. The project construction period has been considered as five years after 

completion of Stage I & II activities (Refer Annexure 11.1). 

2. Available Geological Data at PFR stage. 

3. Requirement of Construction Equipment has been planned to handle the 

quantities worked out on the basis of preliminary layout. 

4. Three Months (from June to August) rainy season has been considered while 

planning surface works. 

11.1 Construction Methodology: 

Infrastructure Works: 

The main infrastructure development is proposed to be carried out in period of 

12 months. During infrastructure period Land Acquisition, construction of 

approach roads, bridges& culverts, arrangement of construction power will be 

undertaken. Major component of project would be started from 4 th month after 

construction of approach roads. Platform to accommodate batching plant, 

stores for construction material, site workshop, offices and other buildings 

(residential/ non residential) colonies will also be developed in infrastructure 

period. Crawler Dozer, Loader cum Excavator, Motor Grader, Air compressor, 

Road Rollers etc. are proposed for deployment during infrastructure stage. 

Diversion of River 

The construction of surface diversion channel would be carried out by 

conventional drilling & blasting method. Excavation of Diversion channel will be 

carried with Air Track/Wagon Drill, Jack hammers, 1.0/2.0 cum Hydraulic 

Excavator and 20/25T Rear Dumpers. Diversion Channel excavation would be 

NH/CON/229 62 01/2004





completed in 6 months. U/s & D/s Coffer dam would be constructed 

immediately after construction of diversion channel within a period of two 

month. However river bed excavation would be started after preparation of Ist 

stage coffer dam within one month time after diversion of river. 

Concrete Dam 

After river diversion, the excavation of river bed will be taken up. The 

excavation of river bed would be carried out in 5 months time. Excavated 

material will be handled by 2.0 cum Hyd. Excavator and 25 t Rear dumpers. 

Concreting of Dam & HM work would be carried out in further 35 months. 

Concreting would be done by 3 nos. Tower Crane having capacity of 4 t at 60 

m radius, with 1.0/2.0/3.0/4.0 cum bucket capacity, 350 cum/hr Batching& 

Mixing plant and 700TPH Aggregate Processing plant. During Peak 

requirement Tower Crane deployed at Power House having capacity of 3t at 45 

m radius would also be used for dam concreting. 

Earthen Dam: 

After placement of concrete for Concrete gravity dam, upto spillway crest level, 

excavation of earthen dam would be taken up. Excavation of Earthen Dam 

would be completed in 6 month time followed by earthfilling of coffer dam in 

further 12 months. Earthfill material required for different zones of earthen dam 

would be taken from their respective quarries by deploying 1.0/2.0 cum. 

Hydraulic Excavator, Wheel Loaders & 20/25 t Rear Dumper. Material placed 

by dumpers at earthen dam location will be spread by 100/200 HP Dozers & 

compacted with 10/20 t Vibratory Compactor. 

Power House 

3 X 30 MW (90 MW) surface power house (75 m (L) X 25 m (W) x 55 m (H) 

size) would be excavated in 7 month time. Excavation of Power House would 

be carried by convention Drilling & Blasting Methods by deploying Air Track, 

Jack Hammers, 1.0/2.0 cum. Hydraulic Excavators, 20/25 t Rear Dumper etc. 

Concreting of Power house would be taken in further 28 months. Concreting, 

Shutter Handling & M/c part erection would be carried with Tower Crane having 

NH/CON/229 63 01/2004





capacity of 4 t at 45 m radius. Concrete would be taken up by 45 cum./hr. 

Batching & Mixing Plant. Transportation of concrete would be carried by 4.0 

cum. Transit Mixer. Installation & Testing of Machine would be undertaken in 

such a manner that Project get commissioned in 60 th month from the start of 

Project construction (Refer Annexure 11.2). 

NH/CON/229 64 01/2004

S. No. 

1 Preparation of stage-I activity estimates 1 

2 

Details of works 

Data collec./ application for clearance from 

MOEF 

3 MOEF clearance 1 

4 Essent. Temp. infra./access 6 

5 Estab. of G&D sites, Metrological 

obser. And Hydrological measurement 

6 Essential Geological & Geo-physical 

exploration, Topographical surveys 

7 Formulation of Feasibility Report, 

preparation of estimate for st-II activities 

8 EIA / EMP studies 15 

9 Commercial viability from CEA 1 

10 Vetting & sanction of st-II activity estimates 1 

11 Detailed Topogr./Geological/Hydro 

metero. & Construction material survey 

12 MOEF clearance 3 

13 Const. of resid./non resid. buildings,roads 

bridges and arrangement of const. Power 

14 Preparation of Detailed Project Report 

and its submission 

15 Techno Economic Clearance 3 

16 Pre PIB delibrations 1 

17 PIB Clearance 1 

18 CCEA Clearance (Investment Sanction) 1 

MONTHS 

Duration 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 

2 

24 

11 

14 

14 

18 

14 

BASANIA HE PROJECT (3X30MW) MADHYA PRADESH 

Schedule for Stage-I&II activities (Upto CCEA clearanace) 

*This schedule is in accordances with three stage clearance policy of Ministry of Power ,Govt. of India vide no. 16/31/2000-DO(NHPC) dated 8/6/2001 

Annexure 11.1

S.No. Name of Work Excavation/ 

Concreting 

Quantities (cum.) 

1 

InfraStructure Works 

Time required 

for Completion 

(in months) 

a Land Acquisition 6 

b Construction of Approaches 3 

c Construction of Residential & 

Non Residential Building 

Award of Contract & 

Mobilization 

2 Diversion Channel 

a Excavation & Earthfill 250000+7000 6 

3 Coffer Dam 

Excavation & Earthfilling 20000+295000 2 

4 Concrete Gravity Dam 

a Excavation 565000 5 

b 

Concreting 

d Hydromechanical Works Job 16 

e Reservoir filling 3 

5 Earthen Dam 


b Earthfill 740000 12 

6 Power House 


b Concreting 132000 28 

c Erection of EOT Crane Job 2 

d Laying of Penstock & Associated 

Concreting 

14000 9 

7 Erection of Machines Job 33 

a Testing & Commissioning 

1330000 

Unit-1 Job 2 

Unit-2 Job 2 

Unit-3 Job 2 

8 Tail Race Channel Works 3 

9 Switchyard works Job 9 

12 

1 

35 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 

Since the date of CCEA clearance can not be anticipated at this stage, the time assumed for various activities is inclusive of the effect of monsoon. 

CONSTRUCTION SCHEDULE 

BASANIA HE PROJECT( 3X30MW) MADHYA PRADESH 

Ist Year IInd Year IIIrd Year IVth Year 

Legend 

Vth Year 

CCEA Clearance 

Annexure 11.2





CHAPTER -XII 

COST ESTIMATE 

NH/CON/229 01/2004



12.0 COST ESTIMATE 

CHAPTER -XII 

COST ESTIMATE 



12.1 PRELIMINARY COST ESTIMATE FOR CIVIL, HYDRO- 

MECHANICAL, ELECTRO-MECHANICAL WORKS: - 

The estimate has been prepared to arrive at the Capital Cost of Basania H. E. 

Project and is of Pre-feasibility level of accuracy. The base date of the estimate 

is June 2003 and the Cost is expressed in Indian Rupees. The Cost Estimate 

is divided into Civil, Electrical and Transmission Works. For Civil Works, the 

sub heads are as under: - 

12.1.1 I-WORKS 

Under this head, provision has been made for various components of the 

Project as detailed hereunder:- 

12.1.2 A-PRELIMINARY 

Under A-Preliminary, provision has been made for all surveys and 

investigations to be conducted to arrive at the optimum of the Project 

Components. 

12.1.3 B-LAND 

This covers the provision for acquisition of land for construction of the Project, 

colonies, offices and stores and compensation for trees and standing crops etc. 

This head also contains the provision for Rehabilitation and Resettlement 

measures for Project Affected People. 

12.1.4 C-WORKS 

This covers the cost of River Diversion Works, Coffer Dam, Concrete Dam, 

Spillway and Stilling Basin and Earthen Dam along with associated Hydro- 

mechanical equipment. 

NH/CON/229 65 01/2004



12.1.5 J-POWER PLANT CIVIL WORKS 



This covers the cost of project components viz. Power House Complex 

alongwith associated Hydro-Mechanical works and other Appurtenant Works. 

The quantities indicated in the estimates for C - Works & J-Power Plant Civil 

Works (Civil & HM) are calculated from the preliminary Engineering drawings 

and as per experience of other on-going or commissioned projects. 

The unit rates for various items are based on the Guidelines issued by CEA for 

preparation of PFRs. It has been assumed that the quarry is available at a 

distance of 10 Kms from the work site and the effect of the same has been 

considered in the unit rates wherever applicable. 

12.1.6 K-BUILDINGS 

Buildings, both residential and non-residential have been provided under this 

head. Under the permanent category only those structures have been included 

which shall be subsequently utilized during the operation and maintenance of 

the project. The costs are worked out on plinth area basis prevalent in the area 

for the type of construction involved. 

12.1.7 O-MISCELLANEOUS 

Provision under this head has been made @ 4% of I- works for the Capital & 

running cost of Electrification, Water Supply, Sewage Disposal, Fire Fighting 

Equipments, Medical Assistance, Recreation, Post Office, Telephone and 

Telegraph Office, etc. The Provisions have been made for the security 

arrangements, inspection vehicles, schools, transport of labour, laboratory 

testing, R&M of guest house and transit camps, community center, 

retrenchment compensation, photographic instruments as well as R&M charges 

etc. 

NH/CON/229 66 01/2004





12.1.8 P-MAINTENANCE DURING CONSTRUCTION AND Y-LOSSES ON STOCK 

A provision of 1% and 0.25% of C-Civil works, J-Power Plants, K-Buildings & R- 

Communications has been made for maintenance of works during construction 

period and losses on stock respectively. 

12.1.9 Q-SPECIAL TOOLS AND PLANT 

It is assumed that the work will be carried out through Contracts and not through 

departmental construction. Accordingly, provision for general purpose equipment 

and inspection vehicle only has been made as per CWC guidelines. 

12.1.10 R-COMMUNICATION 

Provision under this head covers the cost of new roads, widening/improvement of 

roads and strengthening of bridges. The costs of roads and bridges are based on 

the rate structure prevalent in the area of the Project, for the type of construction 

involved. 

12.1.11 X-ENVIRONMENT AND ECOLOGY 

Provision under this head has been taken as 2% of I -Works towards bio-diversity 

Conservation, creation of Green Belt, Restoration of Construction Area, Catchment 

Area Treatment, Compensatory Afforestation etc 

12.1.12 II-ESTABLISHMENT 

Provision for establishment has been made at 8% of I-works minus B-Land for civil 

works. 

NH/CON/229 67 01/2004



12.1.13 III-TOOLS AND PLANTS 



This provision is distinct from that under Q-Special T&P and is meant to cover cost 

of survey instruments, camp equipment and other small tools and plants. The 

outlay is provided at 1% of cost of I-works. 

12.1.14 IV-SUSPENSE 

No provision has been made under this head as all the outstanding suspense 

are expected to be cleared by adjustment to appropriate heads at completion of 

the project. 

12.1.15 V-RECEIPTS AND RECOVERIES 

Under this head, provision has been made for estimated recoveries by way of 

resale or transfer of equipment used in infrastructure works. Recoveries on 

account of resale/transfer of temporary buildings have also been considered. 

12.1.16 ELECTRICAL WORKS AND GENERATING PLANT 

The cost of Generating Plant and Equipment is based on indigenous sources. 

The prices of auxiliary equipment and services are based on prevailing market 

prices/costs incurred at other ongoing or commissioned projects. 

Preliminary Cost Estimate is appended as Appendix I. 

NH/CON/229 68 01/2004





CHAPTER - XIII 

ECONOMIC EVALUATION 

NH/CON/229 01/2004



CHAPTER - XIII 

ECONOMIC EVALUATION 

13.0 ECONOMIC EVALUATION 



The Project has been contemplated as a run-off the river scheme on river 

Narmada. The project is estimated to cost Rs. 1930.31crores excluding 

IDC at June 2003 Price Level. Sale price of energy generated at 

powerhouse bus bars has been worked out as 19.58 Rs./unit.(Table 13.3) 

13.1 ECONOMIC JUSTIFICATION 

The energy generation of the project with an installed capacity of 3 x 30 

MW has been estimated at 240 MU in a 90% dependable year. 

13.2 COST ESTIMATES AND PHASING OF EXPENDITURES 

The cost of construction of the project has been estimated at June 2003 

price level with a construction schedule of 6.5 years including 1.5 years for 

Infrastructure works. 

The estimated Present Day Cost of the project is Rs. 1930.31Crores without 

IDC at June 2003 Price level. 

13.3 PHASING OF EXPENDITURE 

The phasing of expenditure has been worked out on the basis of anticipated 

construction programme. 

NH/CON/229 69 01/2004





The phasing of expenditure without IDC for the present cost is shown as 

below (Table 13.1): 

Table 13.1 – Phasing of Expenditure 

Year Estimated Cost at 

1 st 

2 nd 

3 rd 

4 th 

5 th 

6 th 

6.5 th 

June 2003 P.L. 

(Rs. in Crores) 

77.21 

173.73 

250.94 

328.15 

482.58 

366.76 

250.94 

Net Cost 1930.31 

INTEREST DURING CONSTRUCTION (IDC) 

Based upon above phasing of expenditure the interest during construction 

(IDC) have been calculated with 70:30 debt equity ratio and 10.0% interest 

on loan. (Table 13.2) 

The estimated IDC with estimated present cost isRs 204.75 Crores 

COST OF ENERGY GENERATION 

The cost of energy generation has been calculated for the annual energy 

generation in a 90% dependable year based upon following assumptions. 

1. Debt-equity ratio 70 : 30 

2. Annual interest rate on loan 10.0% 

3. Return on equity 16% 

NH/CON/229 70 01/2004



4. Annual interest rate on working capital 10.0% 



5. O&M Charges 1.5% of Project Cost 

6. Free power to Home State 12% of the energy 

available after losses 

7. Depreciation considered 1/12 th of loan amount 

during loan repayment period. 

The levellised tariff of the Project at present day cost works out to be Rs. 15.88 /Unit. 

(refer to Table 13.5) 

NH/CON/229 71 01/2004

STATEMENT SHOWING IDC CALCULATION AT PRESENT DAY COST (JUNE 2003 LEVEL) 

PRESENT DAY COST 1930.31 Crores 

Civil Works 1812.49 Crores 

Electrical Works 98.83 Crores 

Transmission Works 18.99 Crores 

INTEREST RATE PER ANNUM 10% 

EQUITY 30% 

LOAN 70% 

Table 13.2 


Present Day Amount Receivable I.D.C Loan Outstanding Amount Receivable 

Year Cost Equity Loan at the end of Equity Loan 

year (for the year) 

1 2 3 4 5 6 7 8 

1 77.21 77.21 77.21 

2 173.73 173.73 173.73 

3 250.94 250.94 250.94 

4 328.15 138.64 189.51 5.47 194.99 138.64 194.99 

5 482.58 482.58 43.63 721.19 526.20 

6 366.76 366.76 90.46 1178.41 457.22 

6.5 250.94 250.94 65.19 1494.54 316.13 

Total 1930.31 640.52 1289.79 204.75 640.52 1494.54 

IDC 204.75 Crores Equity 640.52 Crores 

Net cost of the project 2135.06 Crores Loan 1494.54 Crores

UNIT COST OF ENERGY AT BUS BAR AT CURRENT PRICE LEVEL 

(with 12 % FREE POWER) 

(June 2003 P.L.) 

(Based on 16% return on equity & 10% interest on loan, 10% interest on working capital) 

1 Installed capacity 90 MW 

2 Cost of the Project (Net) Rs. 1930.31 Crores 

3 Interest During Construction Rs. 204.75 Crores 

4 Total Cost of Project (Including IDC) Rs. 2135.06 Crores 

a) Equity 30% Rs. 640.52 Crores 

b) Loan 70% Rs. 1494.54 Crores 

5 Annual Energy Generation 240.00 MU 

6 0.5% As Auxiliary Consumption of No. 5 0.50% 1.20 MU 

7 Energy Available After Auxiliary Consumption 238.80 MU 

8 0.5% As Transformer Loss of No. 7 0.50% 1.19 MU 

9 Energy Available After Transformer Loss 237.61 MU 

10 Free Power to Home State 12% 28.51 MU 

11 Energy Available After Allowing Free Power 209.09 MU 

12 Fixed and Running Charges 

A) Capacity Charges 

a) Interest on Loan 10.00% 143.23 Crores 

b) Depreciation Charges 124.55 Crores 

(Limited to 1/12 th of Loan Amount) 

SUB-TOTAL 267.78 Crores 

B) Energy Charges 

a) O&M Charges 1.50% 32.03 Crores 

b) Return on Equity 16.00% 102.48 Crores 


c) Interest on Working Capital 10.00% 7.09 Crores 

I) O&M Charges for 1 month 2.67 

II) 2 Months Average Billing 68.23 

TOTAL Rs. 409.38 Crores 

13 Sale Price at Bus Bar/Unit 19.58 Rs. 

14 Cost of Generation at Bus Bar/Unit 12.92 Rs. 

(Without Allowing Free Power to Home State and Return on Equity) 

Note : This unit rate is excluding water cess, income tax incentive, penalties etc. 

Table 13.3

UNIT COST OF ENERGY AT BUS BAR AT CURRENT PRICE LEVEL 

without 12 % free power 

(June 2003 P.L.) 

(Based on 16% return on equity & 10% interest on loan, 10% interest on working capital) 

1 Installed capacity 90 MW 

2 Cost of the Project (Net) Rs. 1930.31 Crores 

3 Interest During Construction Rs. 204.75 Crores 

4 Total Cost of Project (Including IDC) Rs. 2135.06 Crores 

a) Equity 30% Rs. 640.52 Crores 

b) Loan 70% Rs. 1494.54 Crores 

5 Annual Energy Generation 240.00 MU 

6 0.5% As Auxiliary Consumption of No. 5 0.50% 1.20 MU 

7 Energy Available After Auxiliary Consumption 238.80 MU 

8 0.5% As Transformer Loss of No. 7 0.50% 1.19 MU 

9 Energy Available After Transformer Loss 237.61 MU 

10 Free Power to Home State 0% 0.00 MU 

11 Energy Available After Allowing Free Power 237.61 MU 

12 Fixed and Running Charges 

A) Capacity Charges 

a) Interest on Loan 10.00% 143.23 Crores 

b) Depreciation Charges 124.55 Crores 

(Limited to 1/12 th of Loan Amount) 


B) Energy Charges 

a) O&M Charges 1.50% 32.03 Crores 

b) Return on Equity 16.00% 102.48 Crores 


c) Interest on Working Capital 10.00% 7.09 Crores 

I) O&M Charges for 1 month 2.67 

II) 2 Months Average Billing 68.23 

TOTAL Rs. 409.38 Crores 

13 Sale Price at Bus Bar/Unit 17.23 Rs. 

14 Cost of Generation at Bus Bar/Unit 12.92 Rs. 

(Without Allowing Free Power to Home State and Return on Equity) 

Note : This unit rate is excluding water cess, income tax incentive, penalties etc. 

Table 13.4

BASANIA H. E. PROJECT, M. P. (3 X 30 MW) 

CALCULATION OF ENERGY RATE WITH PRESENT DAY COST (JUNE 2003 PRICE LEVEL) AS PER TARIFF NOTIFICATION (WITH 12 % FREE POWER) 

Table 13.5 

Annual Generation in a 90% dependable year 240 MU O&M Charges 1.50% 

Annual Generation after allowing losses & free Rate of increase of O&M Charges after 1st Year (Compounded) 6% 

power to home state in a 90% dependable year 209.09 MU Interest rate on Loan 10.0% 

Total cost including IDC Rs. 2135.06 Crores Interest rate on Working Capital 10.00% 

Equity 30% Rs. 640.52 Crores Return on Equity 16% 

Loan 70% Rs. 1494.54 Crores Discounting rate 12% 

YEAR CAPACITY CHARGES CHARGES PER UNIT Discounting Discounted 

Out- (Rs.in Cr.) (Rs.in Cr.) 

(Rs. per Unit) Factor Tariff 

standing Interest Depre- Total Return O&M Interest on Working Capital Total Capacity Energy Total (Paisa per 

Loan on loan ciation on equity Charges O&M for 2 months Interest charges charges Unit) 

(Rs.in Cr.) 1 month Average 

Billing 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 

1 1494.54 143.23 124.55 267.77 102.48 32.03 2.67 68.23 7.09 141.60 12.81 6.77 19.58 1.0000 19.58 

2 1370.00 130.77 124.55 255.32 102.48 33.95 2.83 66.45 6.93 143.36 12.21 6.86 19.07 0.8929 17.02 

3 1245.45 118.32 124.55 242.86 102.48 35.98 3.00 64.68 6.77 145.24 11.62 6.95 18.56 0.7972 14.80 

4 1120.91 105.86 124.55 230.41 102.48 38.14 3.18 62.94 6.61 147.24 11.02 7.04 18.06 0.7118 12.86 

5 996.36 93.41 124.55 217.95 102.48 40.43 3.37 61.22 6.46 149.37 10.42 7.14 17.57 0.6355 11.16 

6 871.82 80.95 124.55 205.50 102.48 42.86 3.57 59.52 6.31 151.65 9.83 7.25 17.08 0.5674 9.69 

7 747.27 68.50 124.55 193.04 102.48 45.43 3.79 57.85 6.16 154.08 9.23 7.37 16.60 0.5066 8.41 

8 622.73 56.05 124.55 180.59 102.48 48.16 4.01 56.21 6.02 156.66 8.64 7.49 16.13 0.4523 7.30 

9 498.18 43.59 124.55 168.14 102.48 51.04 4.25 54.59 5.88 159.41 8.04 7.62 15.67 0.4039 6.33 

10 373.64 31.14 124.55 155.68 102.48 54.11 4.51 53.00 5.75 162.34 7.45 7.76 15.21 0.3606 5.48 

11 249.09 18.68 124.55 143.23 102.48 57.35 4.78 51.45 5.62 165.46 6.85 7.91 14.76 0.3220 4.75 

12 124.55 6.23 124.55 130.77 102.48 60.79 5.07 49.92 5.50 168.78 6.25 8.07 14.33 0.2875 4.12 

13 0.00 0.00 18.57 18.57 102.48 64.44 5.37 31.53 3.69 170.62 0.89 8.16 9.05 0.2567 2.32 

14 0.00 0.00 18.57 18.57 102.48 68.31 5.69 32.19 3.79 174.58 0.89 8.35 9.24 0.2292 2.12 

15 0.00 0.00 18.57 18.57 102.48 72.41 6.03 32.89 3.89 178.78 0.89 8.55 9.44 0.2046 1.93 

16 0.00 0.00 18.57 18.57 102.48 76.75 6.40 33.63 4.00 183.24 0.89 8.76 9.65 0.1827 1.76 

17 0.00 0.00 18.57 18.57 102.48 81.36 6.78 34.42 4.12 187.96 0.89 8.99 9.88 0.1631 1.61 

18 0.00 0.00 18.57 18.57 102.48 86.24 7.19 35.26 4.24 192.97 0.89 9.23 10.12 0.1456 1.47 

19 0.00 0.00 18.57 18.57 102.48 91.41 7.62 36.14 4.38 198.27 0.89 9.48 10.37 0.1300 1.35 

20 0.00 0.00 18.57 18.57 102.48 96.90 8.07 37.08 4.52 203.90 0.89 9.75 10.64 0.1161 1.24 

21 0.00 0.00 18.57 18.57 102.48 102.71 8.56 38.07 4.66 209.86 0.89 10.04 10.92 0.1037 1.13 

22 0.00 0.00 18.57 18.57 102.48 108.87 9.07 39.12 4.82 216.18 0.89 10.34 11.23 0.0926 1.04 

23 0.00 0.00 18.57 18.57 102.48 115.41 9.62 40.24 4.99 222.88 0.89 10.66 11.55 0.0826 0.95 

24 0.00 0.00 18.57 18.57 102.48 122.33 10.19 41.42 5.16 229.98 0.89 11.00 11.89 0.0738 0.88 

25 0.00 0.00 18.57 18.57 102.48 129.67 10.81 42.68 5.35 237.50 0.89 11.36 12.25 0.0659 0.81 

26 0.00 0.00 18.57 18.57 102.48 137.45 11.45 44.01 5.55 245.48 0.89 11.74 12.63 0.0588 0.74 

27 0.00 0.00 18.57 18.57 102.48 145.70 12.14 45.42 5.76 253.94 0.89 12.14 13.03 0.0525 0.68 

28 0.00 0.00 18.57 18.57 102.48 154.44 12.87 46.91 5.98 262.90 0.89 12.57 13.46 0.0469 0.63 

29 0.00 0.00 18.57 18.57 102.48 163.71 13.64 48.49 6.21 272.40 0.89 13.03 13.92 0.0419 0.58 

30 0.00 0.00 18.57 18.57 102.48 173.53 14.46 50.17 6.46 282.47 0.89 13.51 14.40 0.0374 0.54 

31 0.00 0.00 18.57 18.57 102.48 183.94 15.33 51.95 6.73 293.15 0.89 14.02 14.91 0.0334 0.50 

32 0.00 0.00 18.57 18.57 102.48 194.98 16.25 53.84 7.01 304.47 0.89 14.56 15.45 0.0298 0.46 

33 0.00 0.00 18.57 18.57 102.48 206.68 17.22 55.84 7.31 316.46 0.89 15.14 16.02 0.0266 0.43 

34 0.00 0.00 18.57 18.57 102.48 219.08 18.26 57.96 7.62 329.18 0.89 15.74 16.63 0.0238 0.40 

35 0.00 0.00 18.57 18.57 102.48 232.22 19.35 60.20 7.96 342.66 0.89 16.39 17.28 0.0212 0.37 

TOTAL 9.1566 145.44 

(A) (B) 

Note: The charges per unit is exclusive of water cess, spares, incentive & Income Tax etc. Levellised Tariff =(B)/(A) 15.88


CALCULATION OF ENERGY RATE WITH PRESENT DAY COST (JUNE 2003 PRICE LEVEL) AS PER TARIFF NOTIFICATION (WITHOUT 12 % FREE POWER) 

Table 13.6 

Annual Generation in a 90% dependable year 240 MU O&M Charges 1.50% 

Annual Generation after allowing losses Rate of increase of O&M Charges after 1st Year (Compounded) 6% 

in a 90% dependable year 237.61 MU Interest rate on Loan 10.0% 

Total cost including IDC Rs. 2135.06 Crores Interest rate on Working Capital 10.00% 

Equity 30% Rs. 640.52 Crores Return on Equity 16% 

Loan 70% Rs. 1494.54 Crores Discounting rate 12% 

YEAR CAPACITY CHARGES CHARGES PER UNIT Discounting Discounted 

Out- (Rs.in Cr.) (Rs.in Cr.) 

(Rs. per Unit) Factor Tariff 

standing Interest Depreciation Total Return O&M Interest on Working Capital Total Capacity Energy Total (Paisa per 

Loan on loan on equity Charges O&M for 2 months Interest charges charges Unit) 

(Rs.in Cr.) 1 month Average 

Billing 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 

1 1494.54 143.23 124.55 267.77 102.48 32.03 2.67 68.23 7.09 141.60 11.27 5.96 17.23 1.0000 17.23 

2 1370.00 130.77 124.55 255.32 102.48 33.95 2.83 66.45 6.93 143.36 10.75 6.03 16.78 0.8929 14.98 

3 1245.45 118.32 124.55 242.86 102.48 35.98 3.00 64.68 6.77 145.24 10.22 6.11 16.33 0.7972 13.02 

4 1120.91 105.86 124.55 230.41 102.48 38.14 3.18 62.94 6.61 147.24 9.70 6.20 15.89 0.7118 11.31 

5 996.36 93.41 124.55 217.95 102.48 40.43 3.37 61.22 6.46 149.37 9.17 6.29 15.46 0.6355 9.82 

6 871.82 80.95 124.55 205.50 102.48 42.86 3.57 59.52 6.31 151.65 8.65 6.38 15.03 0.5674 8.53 

7 747.27 68.50 124.55 193.04 102.48 45.43 3.79 57.85 6.16 154.08 8.12 6.48 14.61 0.5066 7.40 

8 622.73 56.05 124.55 180.59 102.48 48.16 4.01 56.21 6.02 156.66 7.60 6.59 14.19 0.4523 6.42 

9 498.18 43.59 124.55 168.14 102.48 51.04 4.25 54.59 5.88 159.41 7.08 6.71 13.79 0.4039 5.57 

10 373.64 31.14 124.55 155.68 102.48 54.11 4.51 53.00 5.75 162.34 6.55 6.83 13.38 0.3606 4.83 

11 249.09 18.68 124.55 143.23 102.48 57.35 4.78 51.45 5.62 165.46 6.03 6.96 12.99 0.3220 4.18 

12 124.55 6.23 124.55 130.77 102.48 60.79 5.07 49.92 5.50 168.78 5.50 7.10 12.61 0.2875 3.62 

13 0.00 0.00 18.57 18.57 102.48 64.44 5.37 31.53 3.69 170.62 0.78 7.18 7.96 0.2567 2.04 

14 0.00 0.00 18.57 18.57 102.48 68.31 5.69 32.19 3.79 174.58 0.78 7.35 8.13 0.2292 1.86 

15 0.00 0.00 18.57 18.57 102.48 72.41 6.03 32.89 3.89 178.78 0.78 7.52 8.31 0.2046 1.70 

16 0.00 0.00 18.57 18.57 102.48 76.75 6.40 33.63 4.00 183.24 0.78 7.71 8.49 0.1827 1.55 

17 0.00 0.00 18.57 18.57 102.48 81.36 6.78 34.42 4.12 187.96 0.78 7.91 8.69 0.1631 1.42 

18 0.00 0.00 18.57 18.57 102.48 86.24 7.19 35.26 4.24 192.97 0.78 8.12 8.90 0.1456 1.30 

19 0.00 0.00 18.57 18.57 102.48 91.41 7.62 36.14 4.38 198.27 0.78 8.34 9.13 0.1300 1.19 

20 0.00 0.00 18.57 18.57 102.48 96.90 8.07 37.08 4.52 203.90 0.78 8.58 9.36 0.1161 1.09 

21 0.00 0.00 18.57 18.57 102.48 102.71 8.56 38.07 4.66 209.86 0.78 8.83 9.61 0.1037 1.00 

22 0.00 0.00 18.57 18.57 102.48 108.87 9.07 39.12 4.82 216.18 0.78 9.10 9.88 0.0926 0.91 

23 0.00 0.00 18.57 18.57 102.48 115.41 9.62 40.24 4.99 222.88 0.78 9.38 10.16 0.0826 0.84 

24 0.00 0.00 18.57 18.57 102.48 122.33 10.19 41.42 5.16 229.98 0.78 9.68 10.46 0.0738 0.77 

25 0.00 0.00 18.57 18.57 102.48 129.67 10.81 42.68 5.35 237.50 0.78 10.00 10.78 0.0659 0.71 

26 0.00 0.00 18.57 18.57 102.48 137.45 11.45 44.01 5.55 245.48 0.78 10.33 11.11 0.0588 0.65 

27 0.00 0.00 18.57 18.57 102.48 145.70 12.14 45.42 5.76 253.94 0.78 10.69 11.47 0.0525 0.60 

28 0.00 0.00 18.57 18.57 102.48 154.44 12.87 46.91 5.98 262.90 0.78 11.06 11.85 0.0469 0.56 

29 0.00 0.00 18.57 18.57 102.48 163.71 13.64 48.49 6.21 272.40 0.78 11.46 12.25 0.0419 0.51 

30 0.00 0.00 18.57 18.57 102.48 173.53 14.46 50.17 6.46 282.47 0.78 11.89 12.67 0.0374 0.47 

31 0.00 0.00 18.57 18.57 102.48 183.94 15.33 51.95 6.73 293.15 0.78 12.34 13.12 0.0334 0.44 

32 0.00 0.00 18.57 18.57 102.48 194.98 16.25 53.84 7.01 304.47 0.78 12.81 13.60 0.0298 0.41 

33 0.00 0.00 18.57 18.57 102.48 206.68 17.22 55.84 7.31 316.46 0.78 13.32 14.10 0.0266 0.38 

34 0.00 0.00 18.57 18.57 102.48 219.08 18.26 57.96 7.62 329.18 0.78 13.85 14.64 0.0238 0.35 

35 0.00 0.00 18.57 18.57 102.48 232.22 19.35 60.20 7.96 342.66 0.78 14.42 15.20 0.0212 0.32 

TOTAL 9.1566 127.99 

(A) (B) 

Note: The charges per unit is exclusive of water cess, spares, incentive & Income Tax etc. Levellised Tariff =(B)/(A) 13.98

MW 




Basania HE Project 3 X 30 

APPENDIX- I 

Preliminary Cost Estimates 

NH/CON/229 01/2004


S.No 

ABSTRACT OF COST OF WORKS 

Description Amount 


( June 2003 

A CIVIL WORKS 

P.L.) 

1. DIRECT CHARGES 

I - Works 

A - Preliminary 6.95 

B - Land 567.59 

C - Works 814.82 

J - Power Plant Civil Works 90.15 

K - Buildings 4.60 

O - Miscellaneous 67.27 

P - Maintenance 9.91 

Q-Special Tools & Plants 3.44 

R - Communication 81.00 

X - Environment & Ecology 33.64 

Y - Losses on Stock 2.48 

Total of I-Works 1681.84 

II - Establishment @ 8% of cost of I-Works less B-Land 89.14 

III - Tools and Plants @ 1% of cost of I-Works 16.82 

IV - Suspense 0.00 

V - Receipt & Recoveries (-) -2.12 

TOTAL DIRECT CHARGES 1785.68 

2. INDIRECT CHARGES 

a) Capitalised Value of Abatement of Land Revenue 10.00 

b) Audit and Account Charges @1% of cost of I-Works 16.82 

TOTAL INDIRECT CHARGES 26.81 

TOTAL OF DIRECT & INDIRECT CHARGES 1812.49 

ABSTRACT : 

A Civil Works 1812.49 

B Electrical Works 98.83 

C Transmission Works 18.99 

TOTAL COST 1930.31 

C IDC 204.75 

D Total Cost With IDC 2135.06

Sl. 

No. 

DESCRIPTION UNIT QTY RATE 

(Rs.) 

1 Cost of surveys and investigation at PFR 

stage 

2 Detailed Progress Report 

2.1 Aerial survey, contour survey for reservoir basin 

including establishment of permanent bench 

mark. 

2.2 Geological and Geophysical surveys and 

investigation 

AMOUNT 

(Rs. in lacs) 

14.00 

LS 200.00 

LS 5.00 

2.3 Drifting m 200 12000 24.00 

2.4 Geophysical LS 2.00 

2.5 Core Drilling m 500 6000 30.00 

2.6 Hydrological and meteorological surveys 

including establishment of rain gauges/ river 

gauges and discharge, sedimentation stations and 

their running charges for one year 

LS 25.00 

2.7 Investigation for foundation and rock testing LS 25.00 

2.8 Investigation for availability of construction 

material 

2.9 Construction of access roads to facilitate 

investigation 

A - PRELIMINARY 

2.10 Inspection vehicles for inspecting officers for site 

inspection 

LS 5.00 

LS 30.00 

LS 40.00 

2.11 Camping equipments LS 10.00 

2.12 Preliminary soil test and estabishing soil testing 

labortries 

LS 5.00 

2.13 Consultant's fees including charges for 

preliminary design work or device 

LS 10.00 

2.14 Environment & Ecological studies LS 100.00 

2.15 Preparation and printing of project Reports. LS 2.00 

2.16 Seismological studies LS 5.00 

Grand total 

532.00

Sl. 

No. 

DESCRIPTION UNIT QTY RATE 

(Rs.) 

3.0 Pre-Construction Stage Investigation 

AMOUNT 

(Rs. in lacs) 

3.1 Topographical Surveys LS 50.00 

3.2 Geological Investigation 

Diamond core drilling m 100 6000 6.00 

Exploratory Drift m 50 12000 6.00 

Excavation in Trenches & pits LS 2.00 

Testing of Samples LS 5.00 

3.3 Hydrological and silt data collection 2 sites for 4 

3.4 years Meteorological Data Collection 2 sites and 4 

3.3 years Construction material survey 

i) Topographical Survey LS 2.00 

ii) Collection and transportation of samples LS 5.00 

iii) Laboratory Testing of Samples including charges 

for all T & P and Machineries 

LS 

LS 

LS 5.00 

3.4 Survey for layout of colonies and roads 5.00 

i) Residential-cum-Office Hec 

ii) Batching Mixing Plant and Workshop LS 

iii) Project and quarry site road Hec 

4 Design and Consultancy 

4.1 cost of Design establishment including 

procurement of printing statinory and 

preparation of completion eport, history of 

project etc. 

LS 50.00 

4.2 Cost of special Studies and designs LS 10.00 

5 Equipment 

5.1 drawing and mathematical Instruments LS 2.00 

5.2 Survey instruments LS 10.00 

5.3 office instruments LS 5.00 

Grand Total 695.00

Sl. 

No. 

A. Private agricultural land 

B - LAND 

Description Qty. Unit Rate 

Rs in lakhs 

Amount 

i Land for Residential and Non residential 

buildings 

ii Land for acquisition for crusher and batching 

plants, conveyers etc. 

(Rs. in Lakhs) 

20.00 Ha 1.32 26.4 

0.75 Ha 1.32 0.99 

iii Land for submerged land in the reservoir area 15000.00 Ha 1.32 19800 

iv Land for Construction of dam 70.00 Ha 1.32 92.4 

v Private land for Quarry 10.00 Ha 1.32 13.2 

vi Construction of approach Roads 44.00 Ha 1.32 58.08 

vii Land for Power house 0.50 Ha 1.32 0.66 

viii Land for Switch Yard 0.25 Ha 1.32 0.33 

B Compensation 

I Cost of crops standing on cultivated land 

required 

ii Buildings with brick walls and GGI sheet 

roofing 

15145.50 Ha 19992.06 

LS 75.00 

LS 10.00 

iii Compensation for trees LS 10.00 

iv Miscellaneous compensation LS 52.00 

C. R&R 

23 villages fully submerged 

44 villages partially submerged 

Sub total (A) 

Sub total (B) 147.00 

Total (A + B) 20139.06 

LS 

26130.00

Sl. 

No. 

Description Qty. Unit Rate Amount 

D. Interest charges on account of award for the 

period taking over possession of land and date 

of award @ 12% per year of 25% cost of land 

acquisition for two years 

E. Solatium charges for compulsory acquisition 

of land @ 30% of the cost of private land 

F. Provision for legal charges @1% on total 

compensation 

G. Labour and material required for 

measurement and demarcation of land and 

properties @1%of land acquisition 

I. Establishment charges @6.25% of cost of 

total compensation 


1199.52 

5997.62 

201.39 

199.92 

2891.82 

Grand Total 56759.33

S. No. Description 

ABSTRACT OF COST OF C - WORKS 

CIVIL HM TOTAL 

1. Diversion Channel 565.99 565.99 

2. Coffer Dam 1275.50 1275.50 

3 Earthen Dam 4089.97 4089.97 

4 Concrete Dam 5413.97 

Amount (Rs. In Lakhs) 

9911.37 15325.34 

5 Spillway & Stilling Basin 60225.05 60225.05 

Total 71570.48 9911.37 81481.85

S. No. Description Unit Qty. Rate Amount 

( Rs. in Lakhs) 

1 Surface Excavation 

1.1 Common excavation Cum 150,000 125 187.50 

1.2 Rock excavation Cum 100,000 300 300.00 

4 Miscellaneous and ancillary works @ 

7.5% of sub-total A 

Sub total A 487.50 

7.50% 36.56 

Sub total B 524.06 

5 Instrumentation @ 1% of sub-total B 1.00% 5.24 

6 Dewatering @ 2% of sub total B 2.00% 10.48 

7 Contingency @ 3% of sub-total B 3.00% 15.72 

8 Work Charged establishment @ 2% of 

Sub-total B except of lum-sum items 

RIVER DIVERSION WORKS 

2.00% 10.48 

Total civil works 565.99


(In Lakhs) 



2 Embankment Construction 

2.1 Earthfill material Cum 207,000 342 707.94 

2.2 Impervious Core Cum 85,000 354 300.90 

2.3 Filter material Cum 10,000 901 90.10 

3 Concrete 

3.1 M-10 Cum 2,000 2560 51.20 

4 Miscellaneous and ancillary works 

@ 0.50% of sub-total A 

1175.14 

0.50% 5.88 

1181.02 

5 Dewatering @ 3% of sub total-B 3.00% 35.43 

6 Contingency @ 3% of sub-total-B 3.00% 35.43 

7 Work Charged establishment @ 

2% of Sub-total-B except of lumsum 

items 

COFFER DAM 

Sub Total(A) 

Sub Total(B) 

2.00% 23.62 



(In Lakhs) 



1.2 Trenching & Preparation of Dam Base Cum 60,000 300 180.00 

2 Compacted fill 

2.1 Earthfill material Cum 550,000 342 1881.00 

3 Filter Cum 60,000 901 540.60 

4 Impervious Core for Main Dam Cum 130,000 354 460.20 

5 Stone rip-rap/Pitching (main Dam) Cum 35,000 781 273.35 

6 Concrete 

EARTHEN DAM 

M-10 Cum 1,000 2560 25.60 

4 Miscellaneous and ancillary works @ 0.50% 

of sub-total A 

3660.75 

2.50% 91.52 

3752.27 

5 Instrumentation @ 1% of sub-total B 1.00% 37.52 

6 Dewatering @ 3% of sub total-B 3.00% 112.57 

7 Contingency @ 3% of sub-total-B 3.00% 112.57 

8 Work Charged establishment @ 2% of Subtotal-B 

Sub Total(A) 

Sub Total(B) 

2.00% 75.05 


S. No. Description Unit Quantity Rate Amount 





2 Rock Support system 

2.1 Rock bolts m 1,000 400 4.00 

3 Concrete 

3.1 M-15 cum 140,000 2930 4102.00 

3.2 M-20 cum 4,000 3390 135.60 

3.3 M-25 cum 7,000 3610 252.70 

4 Reinforcement steel MT 700 27000 189.00 



Sub Total(A) 4845.80 

2.5% 121.15 

Sub-Total(B) 4966.95 

6 Instrumentation @ 1% of sub-total B 1% 49.67 

7 Dewatering @ 3% of sub total B 3% 149.01 

8 Contingency @ 3% of sub-total B 3% 149.01 


Sub-total B 

CONCRETE DAM (INCLUDING INTAKE) 

2% 99.34 


S. No. Description Unit Quantity Rate Amount 





2 Concrete 

2.1 M-15 cum 440,000 2930 12892.00 

2.2 M-20 cum 236,000 3390 8000.40 

2.3 M-25 cum 503,000 3610 18158.30 

3 Reinforcement steel MT 50,800 27000 13716.00 

4 Rock Support System 

Rock Bolts M 61,000 400 244.00 




3.5% 1885.74 

Sub-Total(B) 55763.94 





Sub-total B 

SPILLWAY & STILLING BASIN 

2% 1115.28 


J -POWER PLANT APPURTENANCES (CIVIL WORKS) 

S.NO. Description 

Amount (Rs. in Lakhs) 

CIVIL HM TOTAL 

1. Power House Complex 8446.22 568.94 9015.16 

Total 8446.22 568.94 9015.16






2 Supports System 

2.1 Rockbolts m 1,000 400 4.00 

2.2 Shotcrete m 3 500 4000 20.00 

3 Concrete 

POWER HOUSE COMPLEX (INCLUDING CELLULAR WALL) 

3.1 M15 m 3 48,000 2930 1406.40 

3.3 M25 m 3 84,000 3610 3032.40 

4 Reinforcing Steel MT 9,600 27000 2592.00 

5 Structural Steel For roof truss MT 200 42000 84.00 

6 Stone/Brick Masonary m 3 3,500 2000 70.00 


4.5% of sub-total (A) 


4.5% 336.77 

Sub Total(B) 7820.57 





Sub-total B 

2% 156.41 

Total Civil Cost 8446.22

S. No. DESCRIPTION 

1 SPILLWAY RADIAL GATE 

WIDTH HEIGHT WEIGHT NOS/ Qty. Rate Amount 

(M) (M) (T) SET Rs. in Lakhs 

a RADIAL GATE 10 13 150 21 3150 100000 3150.00 

b EMBEDDED PARTS 90 21 1890 50000 945.00 

c HYDRAULIC HOIST CAPACITY (2X175T) L.S. 21 LS 15000000 3150.00 

d POWERPACK L.S. 21 LS 2000000 420.00 

e GASOLINE OPERATED POWER PACK L.S. 1 LS 1000000 10.00 

f FIXED WHEEL GATE 10 13 155 2 310 60000 186.00 

g EMBEDDED PARTS 42 21 882 50000 441.00 

h GANTRY CRANE (355 T CAPACITY) L.S. 1 LS 35000000 350.00 

i LIFTING BEAM 6 1 6 60000 3.60 

j BREAST WALL LINER (HIGH STRENGTH STEEL) 20 21 420 70000 294.00 

k ARMAC & COMPUTER CONTROL INSTRUMENTATION L.S. 1 LS 15000000 150.00 

l DG SET (500KVA) L.S. 1 LS 2500000 25.00 

m STORAGE VENT WITH HATCH COVER 5 1 5 50000 2.50 

2 INTAKE 

HYDRO-MECHANICAL WORKS 

a FIXED WHEEL GATE 6 7.5 44 1 44 60000 26.40 

b FIXED WHEEL GATE EMBEDDED PARTS 12 1 12 50000 6.00 

c ROPE DRUM HOISTCAPACITY 80 T 30 1 30 100000 30.00 

d HOIST SUPPORTING STRUCTURE 24 1 24 50000 12.00 

e TRASHRACK 15 20 105 1 105 50000 52.50 

f EMBEDDED PARTS 45 1 45 50000 22.50 

g TRCM (1 T CAPACITY) L.S. 1 LS 10000000 100.00

S. No. DESCRIPTION 

WIDTH HEIGHT WEIGHT NOS/ Qty. Rate Amount 

(M) (M) (T) SET Rs. in Lakhs 

BULKHEAD GATE 6 7.5 44 1 44 60000 26.40 

h EMBEDDED PARTS 12 1 12 50000 6.00 

I ROPE DRUM HOISTCAPACITY 60 T 22 1 22 100000 22.00 

j HOIST SUPPORTING STRUCTURE 17 1 17 50000 8.50 

3 PENSTOCK 

a FERRULES & BRANCHES (ASTM 285C) 400 1 400 70000 280.00 

b TRIFURCATION (IS 2002) 125 1 125 77000 96.25 

4 DRAFT TUBE GATE 

SLIDE TYPE GATE 3.7 10.8 25 6 150 60000 90.00 

EMBEDDED PARTS 8 6 48 50000 24.00 

GANTRY CRANE(40 T CAPACITY) L.S. 1 Ls 4800000 48.00 

LIFTING BEAM 6 1 6 60000 3.60 

15 CONTENGENCIES @ 5% FOR SPARES, AIR VENTS, 

BY PASS ARRANGEMENT ETC. 

Total 9981.25 

5% 499.06 

Grand Total 10480.31

S. No Description Plinth Area Unit Rate Amount 

(A) Residential Buildings 

1. Permanent buildings 2200 Sqm 0.045 99.00 

Service Charges @ 31% 31% 30.69 

2. Temporary buildings 2500 Sqm 0.035 87.50 

Service Charges @ 27% 27.0% 23.63 

(B) Non Residential Buildings 

K - BUILDING 

1 Permanent buildings LS 50.00 

2. Temporary buildings 4000 Sqm 0.035 140.00 

Service Charges @ 20.5% 20.5% 28.70 

Grand Total (Residenial + Non-Residential Buildings) 459.52

1. Improvement/reconstruction of bridges on existing 

national highway 

a From Mandla To Basania 

Rate Amount 

(Rs. in lacs) 

Construction of causeway/culverts LS 

30.00 

b Basania To Project Site 

Improvement of road LS 

20.00 

2. Proposed new Roads 

R - COMMUNICATION 

S. No. Description Unit Length 

a New National highway due to submergance of 

existing NH 12 A 

b proposed new Roads connecting the office & 

residential complexes with Dam and Power House 

Locations and Swith yard 

km. 40 200.00 8000.00 

LS 

50.00 

Grand Total 8100.00

Q-Spl T&P for Infrastructure Development 

S. No. Description of equipment Quantity 

(Nos.) 

Cost Total Cost (Rs 

(Rs in in Lacs) 

Lacs) 

1 Hydraulic Excavator, 1.0 cum. 1 50.00 50.00 

2 Wheel Loader, 2 Cum 1 30.00 30.00 

3 Crawler Dozer, 100 FHP 2 50.00 100.00 

4 Wheel Dozer, 300 HP 1 95.00 95.00 

5 Diamond Core Drill (Mechanical) 1 15.00 15.00 

6 Diamond Core Drill (Hyd) 1 60.00 60.00 

7 Air Track/Wagon Drill 2 15.00 30.00 

8 Jack Hammer/Pavement Breaker 5 0.35 1.75 

9 Compressed Air(cfm) 2000 0.0125 25.00 

10 Mobile Crane, 10 t Pick & Carry 1 10.00 10.00 

11 Mobile Crane, 20 t (Rough Terrain) 1 60.00 60.00 

12 Road Roller, 8/10 t 2 10.00 20.00 

13 Dewatering Pump L.S 10.00 10.00 

14 Tipper 4.5/6.0 cum. 8 9.00 72.00 

15 Truck, 10 t 4 7.50 30.00 

16 Low Bed Tractor Trailor, 30 t 1 50.00 50.00 

17 Concrete Mixer, 14/10 cft 2 2.00 4.00 

18 Explosive Van, 5 t 1 10.00 10.00 

19 Water Tanker, 10 KL 1 12.00 12.00 

20 Petrol/Diesel Tanker, 10 KL 1 12.00 12.00 

21 Bus/Mini Bus 5 10.00 50.00 

22 Car/MUV 2 5.50 11.00 

23 Jeep (Petrol/Diesel) 15 4.50 67.50 

24 Ambulance 2 8.00 16.00 

25 Workshop Equipt. L.S 20.00 20.00 

26 Fire Tender 1 15.00 15.00 

27 Recovery Van 1 10.00 10.00 

28 Pick up Van/L.C.V 2 5.50 11.00 

Total 897.25

DISTRIBUTION OF COST UNDER HEAD Q - SPECIAL T & P AND V - RECEIPT 

& RECOVERIES 

Cost of equipments excluding inspection vehicles 

Cost of inspection vehicles (Item 21 to 24 & 26) 

Provision under head Q - Spl. T&P 

Recoveries to be shown under V- Receipt and 

Recoveries 

Cost Q 

(Rs. In lakhs) 

R&R 

737.75 184.44 138.33 

159.50 159.50 31.90 

897.25 343.94 

170.23

V - RECEIPT & RECOVERIES 

S. No. Item Amount 

(Rs. In Lakhs) 

1. Recovery from the Sale of Equipments 170.23 

2. Recovery towards Temporary Buildings 

(@ 15% of Amount for Temporary Buildings) 41.97 

Total 212.20

S.No. Item Particulars Qty Rate Amount Excise Duty* Total 

(Rs Lcs) Rate Amount (Rs Lcs) 

1 2 3 4 5 6 7 5+7 

A 

1 

(a) Generating units and Bus Ducts 3X30 MW, 187.5 

rpm, Head 38 meters 

5700.00 5130.00 16 820.80 5950.80 

Rs/KW 

200.00 210.00 16 33.60 243.60 

Rs/KVA 

3 

Auxiliary Electrical Equipment for 

(Except Transformer) (5% of item 1) 

Power Stations, 

256.5 16 41.04 297.54 

4 

Auxiliary Equipment & Services for Power stations, (5% of 

Item 1) 

256.5 16 

41.04 297.54 

5 Spares (5% of 1, 3% of 2-4) 256.5 21.69 278.19 16 44.51 322.70 

6 SUB TOTAL (A1) 7112.18 

7 Central Sales tax **4% of item 6 284.49 

8 Transportation & Insurance 6% of item 6 426.73 

9 Erection & commissioning 8% of item 6 except spares 543.16 

10 SUB TOTAL (A2) 8366.56 

11 

Establishment,Contingency,other charges , 11% of Item 

10 

920.32 

12 SUB TOTAL (A) 9286.88 

B 

13 Switchyard (132KV) 

7 

bays 

58 

lacs/bay 

406.00 16 64.96 470.96 

14 Switchyard Spares ( 2% of item 13) 8.12 16 1.30 9.42 

15 Subtotal(B1) 480.38 

16 Central Sales tax **4% of item 15 19.22 


18 Erection & commissioning 8% of item 15 except spares 37.68 

19 Subtotal(B2) 551.68 

20 Establishment,Contingency,other charges , 8% of item 19 44.13 

21 SUB TOTAL (B) 595.82 

GRAND TOTAL (A+B) (In Lacs) 9882.70 

*Custom duty in case of imported Items 

**Not applicable for Imported Items 

COST ESTIMATE OF BASANIA H.E. PROJECT ( 3 X 30 MW) 

2 Step up transformer 11/132 KV, 35 MVA 3 

Electro Mechanical Works 

Generator, Turbine and Accessories 

3

S.No. Item Particulars Qty Rate Amount Excise Duty* Total 

(Rs Lcs) Rate Amount (Rs Lcs) 

1 2 3 4 5 6 7 5+7 

1 

Switchyard (132KV) (Additional Bays at 

Receiving End) 

Transmission line (132 KV,40km) 

3 

bays 

58 

lacs/bay 

174.00 16 27.84 201.84 

2 

a) Double circuit line 

40 

Km. 

16 

Lacs/km 

640 16 102.40 742.40 

b) Single circuit line 

40 

Km. 

12 

Lacs/km 

480 16 76.80 556.80 

3 Switchyard Spares [ 2% of 1,2(a) & 2(b)] 25.88 16 4.14 30.02 

4 Subtotal(1) 1531.06 

5 Central Sales tax **4% of item 4 #REF! 61.24 


7 

Erection & commissioning 8% of item 4 except 

spares 

120.08 

8 Subtotal(2) 1758.32 

9 

COST ESTIMATE OF BASANIA H.E. PROJECT ( 3 X 30 MW) 

Establishment,Contingency,other charges , 8% 

of item 8 

140.67 

GRAND TOTAL (In Lacs) 1898.98 

*Custom duty in case of imported Items 

**Not applicable for Imported Items 

Electro Mechanical Works 

Power Evacuation Cost

MW 





APPENDIX- II 

Plates 

NH/CON/229 01/2004

PLATE – 2.2

BED LEVEL IN 

FEET 

3600 

1600 

1200 

400 

0 

TAIL RACE LEVEL IN 

FEET 

3200 

2800 

2400 

2000 

800 

FRL 1240 

GOI RIVER 

GOI 

MILEAGE 621 

LOWER GOI 

FRL 1020 

80 

NAVAGAM 

62 

723 

210 

JALSINDHI 

178 

187 

690 

680 

1200 

800 

DEB RIVER 

FRL 355 

HATNI RIVER 

DEB 

FRL 980 

365 

HAIRANPHAL 

343 

650 

645 

JOBAT 

FRL 1220 

URI RIVER 

FRL 455 

FRL 895 

620 

JOBAT 

FRL 1210 

MAIN PROJECT 

CHOTTA TAWA RIVER 

457 

MAHESHWAR II 

572 456 

FRL 534 

OMKARESHWAR 

539 524 

CHOTTA TAWA 

FRL 945 

FRL 660 

660 

NARMADA 

SAGAR 

525 580 

515 

1200 

1000 

GANJAL 

FRL 1200 

GANJAL RIVER 

FRL 860 

MORAND 

FRL 1210 

1600 

1200 

TAWA RIVER 

MORAND RIVER 

470 

KOLAR 

TAWA DUDHI RIVER 

FRL 1166 

FRL 1502 

KOLAR RIVER 

SHAKKAR RIVER 

HOSHANGABAD 

419 

418 931 

L SECTION OF NARMADA RIVER SHOWING MAJOR IRRIGATION PROJECTS 

FRL 1265 

FRL 985 

FRL 1450 

357 

BARNA 

FRL 1210 1141 

SHER RIVER 

BARNA RIVER 

FRL 1340 

SITAREWA 

FRL 2286 

1055 

CHINKI 

309 

302 1040 

FRL 1150 

SITAREWA RIVER 

BANJAN RIVER 

DHOBATORIA 

FRL 1754 

BARQI 

1203 

235 

UPPER BURHNER 

FRL 2025 

BARHNAR RIVER 

FRL 1387 

HALON 

FRL 2008 

178 

1390 

BASANIA 

1450 

156 

154 

FRL 1525 

1610 

ROSRA 

1600 

130 

FRL 1850 

RAGHAVPUR 

84 1970 

FRL 2160 

1980 

FRL 2480 

2395 

UPPER 

NARMADA 

28 2400 

0 3460 

3600 

3200 

2800 

2400 

2000 

1600 

1200 

800 

400 

0 

PLATE - 2.3

B 

NALA 

B 

B 

C 

B 

A 

BAKORI A 

B 

B 

C 

C 

B 

80° 25' 

PATPARSINGARPUR 

C 

A 

B 

B 

INDEX 

C 

B 

A 

C 

MAJHGAON GROUP 

KUNDAM GROUP 

MANDLA GROUP 

B 

C 

A 

B 

A 

C 

A 

80° 30' 

NARMADA RIVER 

22° 45' 

NARMADA RIVER 

22° 40' 

UNFOSSILIFEROUS / FOSSILIFEROUS SEDIMENTARY 

INTERTRAPPEAN 

BASALTIC / DOLERITIC LAVA FLOWS 

(COMPOUND PAHOEHOE/SIMPLE WITH 

PAHOEHOE AFFINITY) 

BASALTIC/DOLERITE LAVA FLOWS (SIMPLE/Aa) 

BASALTIC / DOLERITIC LAVA FLOWS 

(COMPOUND PAHOEHOE/SIMPLE) 

A 

DAM WITH TOE 

POWERHOUSE 

0 1 2Km 

GEOLOGICAL PLAN 

DRN CKD 

REC 

APP 

N S SIDHU 

DRG NO 

DATE REV 

22.9.2003 

PLATE 4.1

23°0` 

22°15` 

22°0` 

80°15` 

23°15` 

22°45` 

22°30` 

80°15` 

Narayanganj 

SCALE:- 

DAM SITE 


MANDLA 

80°30` 

NARMADA RIVER 

MANOT 

80°30` 

500 

0 5 10 15 20 25 KM 

MOHGAON 

MAHADWANI 

GHUGHARI 

BICHHIYA 

80°45` 

80°45` 

CATCHMENT PLAN OF RIVER NARMADA UPTO BASANIA 

SIGI NALLAH 

BURHNER RIVER 

UMARIYA 

UMARIYA 

HALON NALLAH 

NARMADA RIVER 

CHHAPARTALA 

JAMGAON 

JALDADAR 

KHARMER RIVER 

SUPKHAR 

81°0` 

GATHAURI 

PHEN RIVER 

81°0` 

SHAHPUR 

DINDORI 

MAWAI 

ATARIYA 

81°15` 

81°15` 

BAJAG 

NARMADA RIVER 

81°30` 

GORAKHPUR 

GUTTIPARA 

81°30` 

N 

LEGEND 

RAINFALL STATION 

G&D SITE 

DAM SITE 

KARANJIYA 

CATCHMENT BOUNDARY 

MAIN RIVER 

TRIBUTARY 

81°45` 

81°45` 

1059 

CATCHMENT AREA=9472 SQKM 

TOPOSHEETS NO.'S= 64A/12,16,15,64B,64E,64F 

PLATE 5.1 

23°0` 

AMARKANTAK, 

SOURCE OF RIVER 

NARMADA 

22°15` 

23°15` 

22°45` 

PENDRA ROAD 

22°30` 

22°0`

40000 

NOTES:- 

SCALE:- 

CONCRETE DAM 

U/S ELEVATION 

00

1000 THICK DUMPED RIP RAP 

MDDL EL 471 

2.5 

1 

5000 

EL 475.00 0.25 

1 

0.25 

1 

EL 475.00 

IMPERVIOUS CORE 

FRL EL 482 

2 

1 

1 

0.25 

12000 

EL 484.00 

EL 482.00 

0.25 

1 

2 

1 

GROUT CURTAIN 

FILTER 

BOULDER PITCHING 300 TH. 

5000 

2.5 1 

DRAINAGE FILTER 

5000 

EARTH FILL 

EL VARIES 

ROCK TOE 

TO DRAIN 

NOTES:- 

1. ALL DIMENSIONS ARE IN MM AND LEVELS IN METRES. 

SCALE:- 

N.T.S 

PLATE - 6.6 

EARTHEN DAM 

CROSS SECTION 

00

? 

NSL(TENTATIVE) 

? 

? 

F.R.L.482.00 

M.D.D.L 471.00 

1 

1 

EL 453.00 

? 

? 

E.L.484.00 

15° 

? 

? 

14000 

STEEL 

RUNGS 

AIR VENT 

PIPE 

DAM AXIS 

SERVICE GATE 

GROOVE 

STOPLOG GATE 

GROOVE 

FOUNDATION GALLERY 

? 

? 

STEEL PENSTOCK 

COMPACTED 

FILL 

4100Ø STEEL PENSTOCK 

? 

R15000 

? 

? 

DRAIN PIPES 

C L 

E-LINE 

CONTROL BLOCK 

EL. 433.00 

7000 

? 

D-LINE 

25000 

C-LINE 

SERVICE BAY 

MACHINE HALL 

? 

? 

B-LINE 

A-LINE 

EL. VARIES 

AVG. TWL 437.20 

? 

1. 

ALL DIMENSIONS ARE IN METRES AND LEVELS IN METRES. 

2. THIS DRAWING IS BASED ON SURVEY OF INDIA TOPOSHEET NO. 64B/6 

& 64B/10 (SCALE 1:50000) WITH CONTOUR INTERVAL OF 20M. 

SCALE:- 

C.C.BLOCK 

NOTES:- 

PLATE - 6.7 

STONE PROTECTION 

POWER DAM 

CROSS- SECTION 

00

132KV 

BUS1 

BUS PT-1 

132kV 

BUS-II 

BUS PT-2 

TO 132KV 

FEEDER-1 

CVT 

EX. Tr. 

NGT 

UNIT -III 

S.A. 

GSU Tr. 

SC PTSP 

SA 

PT 

G-III 

64G1 

64G2 

TO 132KV 

FEEDER-2 

CVT 

BUS 

COUPLER 

EX. Tr. 

NGT 

UNIT -II 

GSU Tr. 

SC 

SA 

G-II 

PT 

64G1 

64G2 

TO 132KV 

FEEDER-3 

PTSP 

CVT 

EX. Tr. 

PT PT PT 

NGT 

UNIT -I 

GSU Tr. 

3Ø,35 MVA 

11 / 132 KV 

UAT UAT UAT 

S.A. 

G-I 

S.A. 

11 / 0.415KV, 800KVA 

SC PTSP 

SA 

PT 

30MW, 11KV 

50HZ 

64G1 

64G2 

FOR 

METERING & 

PROTECTION 

FOR 

DVR DUPLICATE 

PROTECTION 

Raj Kumar 

SINGLE LINE DIAGRAM 

PLATE - 8.1 

OCT, 2003 NH/DEM/BAS/SLD/01 00

MW 





APPENDIX- III 

Ranking Study by CEA 

NH/CON/229 01/2004





BRIEF WRITE UP OF CEA RANKING STUDY 

The Narmada River appears to have yet another attractive storage site almost 

immediately downstream of Biswani scheme. A lifting dam about 55 m high 

would enable utilization of an average gross head of about 48 m at a site near 

village Basania. The waters of River Narmada are contemplated to be 

diverted into about 9 km long tunnel leading the waters to a power house to 

be located on a stream which drains into the reservoir provided under Bargi 

storage project on the main Narmada. This scheme would utilize an additional 

head available in the loop formed by the River Narmada downstream of the 

dam site. An average gross head of about 48 m is likely to be available at the 

power house which would enable an optimum generating capacity of 60 MW. 

The scheme would enable a firm power of23 MW and afford an annual energy 

generation of 238 GWH and 388 GWH in 90 % and 50 % dependable years. 

NH/CON/229 01/2004

BAKORI 

DUNGARIA 

POWER HOUSE 

DAM 

SILPURI 

AVG. TWL : 437.08 M. 

HEAD : 37.17 M. 

IC : 60 MW 

ENERGY : 303 Gwh 

HEIGHT : 25.18 M 

FRL : 492 M 

MDDL : 473 M 

LIVE CAPACITY : 1846 Mcum 

DUNGARIA RESERVED FOREST 

JANTIPUR 

KINDRI 

PATPARA 

MOHNIA 


BASANIA HE SCHEME 

(NARMADA RIVER SYSTEM) 

CENTRAL INDIAN RIVER SYSTEM 

DRG. NO. HEPR - PS - CIR - 160

MW 





APPENDIX- IV 

Conceptual Planning Approval by CEA 

NH/CON/229 01/2004

MW 





APPENDIX- V 

Report of GSI and IMD seismic data 

NH/CON/229 01/2004

MW 





APPENDIX- VI 

Comments of CWC on Hydrology and NHPC’s replies 

NH/CON/229 01/2004

MW 





APPENDIX- VII 

Comments of CWC on Design and NHPC’s replies 

NH/CON/229 01/2004

REPLY OF CWC OBSERVATIONS RECEIVED VIDE LETTER NO.22/1103 

DAM 

HCD /NW & S/533 DT. 19-11-2003 

CWC Observation Reply from NHPC 

1. Being an inter state project the 

regulated release of water for use 

in downstream area for irrigation 

needs to be spelled out state 

wise. Provision for drinking water 

may also be kept in the project 

estimates. Effect of 

release/storage to be studied for 

Bargi HE Project. 

2. Red and Green boles and soft tuff 

seams are stated to be existing 

under the foundation of the dam. 

Provision for their treatment and 

foundation treatment for shear 

and fault zones are required to be 

made in the project estimates. 

3. Availability of the construction 

material and quarries for 

construction of earthen dam and 

concrete spillway is to be ensured 

by proper construction material 

survey. 

4. Details regarding approach roads 

and other infrastructure have not 

been brought out. 

5. The general layout plan of the 

project has not been appended 

with the PFR. 

6. The spillway capacity and FRL 

has been fixed based on probable 

maximum flood of 39368 cumecs. 

The flood values by other 

The aspect of irrigation potential of 

scheme and effect of 

storage/release on downstream 

project has not been considered at 

PFR stage. However, this aspect 

has been included in further 

studies under Chapter-VI of 

Conceptual Layout & Planning. 

The estimate of foundation 

treatment for shear and fault zones 

shall be assessed after the detailed 

geological investigations. This 

aspect has been included in further 

studies in Chapter-VI of 

Conceptual Layout & Planning. 

Availability of construction material 

has been mentioned in the chapter 

IV and the geological map of 

quarry area has been enclosed. 

However detail construction 

material survey shall be 

undertaken at DPR stage as 

mentioned in chapter IV. 

Details of existing Infrastructure 

and approach roads have been 

mentioned in chapter X. 

General layout plan has now been 

appended in PFR as Plate – 6.3 

Hydrological aspects have been 

discussed with CWC, their 

observations, NHPC’s reply and 

record note of discussion dated.

empirical formulation shows rd 

the values. The unit hydrograph 

and probable maximum flood 

needs to be referred to Hydrology 

Directorate for firming the values. 

7. Undersluices have been 

proposed as spillway for adapting 

design discharge. Accordingly, 21 

no. of spillway bays have been 

adopted. The project not being 

run of the river scheme, it will be 

appropriate to adopt conventional 

spillway with provision of silt 

excluders in limited number of 

bays. 

POWER HOUSE 

1. There is no contour map of the 

area available in the report. No 

plan of the power dam, 

Powerhouse etc. is included in 

the report. Therefore no 

comments can be offered on the 

location and the proposed layout 

of the powerhouse. 

2. The maximum flood level in the 

Tailrace is not mentioned. 

Therefore adequacy of the 

protection of the Power House 

from Tail water cannot be 

ascertained. 

17.10.03 has been appended in the 

report. 

Spillway gates with breast wall 

have been proposed for effective 

flushing of reservoir on the basis of 

past experience. However, the 

spillways shall be further optimized 

at later stage by conducting model 

studies. 

A layout plan alongwith available 

contour has been enclosed as 

Plate-II (based on 1:50000 scale 

toposheet with contour interval 20 

m). Survey of India does not have 

Toposheet higher than 1:50000 

scale as confirmed vide their letter 

no. RIR/448/4756/96/HARYANA 

dated 11.07.2003. NHPC officers 

visited the site on dated 

16.09.2003, however survey work 

could not be undertaken, as the 

project area remained flooded 

during those days. 

No tail water-rating curve has been 

developed at prefeasibility stage. 

However, during the DPR stage, 

the service bay level & approach 

road shall be kept above maximum 

tail water level.

3. Adequacy of the Elevation of the 

Machine Hall, Service Bay and 

their Approach to be kept above 

Max. TWL cannot be ascertained 

due to lack of the above 

informations. 

4. Location of the Switchyard viz a 

viz Transformer yard cannot be 

ascertained due to lack of contour 

plan. 

5. The length of the Power dam is 

mentioned to be 40.0 m whereas 

length of the Power House is 75.0 

m. A part of the Power House as 

well as Tailrace would extend D/s 

of the earthen 

Embankment.Adequate protection 

works that may be required to 

protect D/s of the embankment 

cannot be ascertained due to lack 

of the contour plan. 

6. Distance between Dam Toe and 

the Power House may have to be 

increased to locate trifurcation of 

the penstock as well providing 

reducer pieces D/s of the vertical 

bend to reduce losses and to 

protect Powerhouse from 

Seepage water from the Toe of 

the dam. Adequate Drainage of 

the Backfill U/S of the Power 

House is to be provided. 

7. The intake structure has to be 

provided with a Semi circular 

Trash Rack cage to limit the 

approach velocity in order to 

reduce the entry losses. 

The layout has been developed on 

the basis of 1:50000 scale SoI 

toposheet. As such, the location of 

switchyard has not been shown at 

this stage. The same shall be taken 

care at the DPR stage. 

Provision of protection work has 

been made in the quantity 

estimate. Optimization of layout 

may be undertaken at DPR stage 

when more data shall be available. 

Inclined trash rack arrangement 

has been considered with 

mechanical trash cleaning option. 

8. The air vent is wrongly located in Air vent pipe of smaller dia. has

the U/s of the Service gate. It may 

be shifted D/s of the gate. 

9. The roof of the Trash Rack 

structure could be kept slightly 

above MDDL and manual 

cleaning of the Trash rack could 

be resorted to from this platform. 

10. The specification of the steel for 

the penstock may not be required 

of the grade ASTM 537 or 

ASTM517. Instead the grades 

ASTM 285 C or IS 2002 could 

suffice. 

11. Arrangement and provision of 

curtain grouting be kept under the 

Power Dam and Embankment 

etc. also. 

been provided on D/s of bulkhead 

gate for escape of air during the 

filling of space between bulkhead 

gate and intake gate with water for 

achieving balance head condition 

for bulkhead gate 

As the Cleaning has to be done for 

a depth of more than 18m. Hence 

manual cleaning shall be difficult. 

Cleaning by TRCM has been 

provided. 

Modification in the Grade of 

material as suggested by CWC has 

been carried out. 

The provision of curtain grouting 

has been kept in cost estimate 

under miscellaneous items as per 

the guidelines issued by CEA.

MW 





APPENDIX- VIII 

Comments of CEA on Power Potential and 

NHPC’s replies 

NH/CON/229 01/2004

REPLY OF CEA OBSERVATIONS RECEIVED VIDE LETTER NO. 

Power Potential Studies 

7/9/NHPC/2003/HP&I/1120 DT 30.10. 2003 

CEA Observations NHPC’s Reply 

It was pointed out by us in our 

earlier comments dated 21.09.03 

that the hydrological year is to be 

considered from June to May 

instead of July to June and the 

evaporation losses have to be 

taken into account in the power 

potential studies. This has not 

been done in the draft Pre 

Feasibility Report and may be 

taken into account while finalizing 

the Pre Feasibility Report. 

Hydrological year has been taken as 

July to June as desired by CEA in the 

meeting held on 23.09.03 as per 

summary record of discussion conveyed 

vide CEA letter no 7/9/National Hydro 

Electric Power Corporation 

Ltd./2003/998 dated 24.9.03. 

Evaporation losses could not be 

considered due to non- availability of 

concurrent data and the same shall be 

considered at DPR stage.

MW 





APPENDIX- IX 

Comments of CEA on Power Evacuation and 

NHPC’s replies 

NH/CON/229 01/2004

REPLY OF CEA OBSERVATIONS RECEIVED VIDE LETTER NO. 29 /34 

Power Evacuation Aspects 

/2003 /SP & PA /1226 DT. 10.10. 2003 

CEA Observations NHPC’s Reply 

In the preliminary feasibility report, 

it has been proposed that power 

from the project would be 

generated at 11 kV and stepped 

up to 132 kV and would be further 

evacuated over three no. 132 kV 

lines (one D/C and one S/C) to 

Mandla Sub-station of MPEB. 

Accordingly, a provision for three 

line bays at generating switchyard 

has been proposed which is in 

order. 

Further, Mandla 132 kV substation 

of MPEB is connected to 

132 kV MPEB Grid by a S/C line 

to Seoni. For reliable evacuation 

of power from the project, 

integration of Mandla 132 kV substation 

wit nearby 132 kV sub 

stations would be required. The 

project authorities may request 

MPEB for the same. 

Switchyard Cost Aspects 

The Single line Diagram (SLD) of 

the proposed 132 kV switchyard 

has not been included n the 

preliminary FR. The same needs 

to be incorporated showing details 

of various proposed equipment to 

be installed in the switchyard. 

The detailed break up of 

switchyard equipment alongwith 

cost does not find mention in the 

preliminary FR. The same needs 

to be included. The details should 

National Hydro Electric Power 

Corporation Ltd. proposal for power 

evacuation has been vetted by CEA. 

Regarding integration of Mandla 132 kV 

sub station for reliable power 

evacuation MPEB shall be approached 

by project authorities at appropriate 

time. 

Single line diagram of the 132kV 

switchyard has been included in the 

chapter no. VIII at Plate - 8.1 . The 

revised cost estimate for E & M 

Equipment & Power evacuation has 

been worked out in line with CEA 

guidelines.

also match with details of 

equipment as per single line 

diagram. 

The cost estimates for switchyard 

indicate a lump sum figure of Rs. 

649.60 Lakhs (inclusive of 16% 

excise duty) for 7 nos. bays (3 GT 

bays, 3 line bays and 1 bus 

coupler bay.) In the absence of 

details of equipment and rates it is 

not possible to offer comments on 

individual rates of equipment and 

works but prima facia the overall 

cost of switchyard appears to be 

on higher side. 

Over and above the switchyard 

estimate, provision for spares at 

the rate of 5%, CST at the rate of 

4%, transportation and insurance 

at the rate of 6%, erection and 

commissioning at the rate of 8%, 

establishment, contingency and 

other charges at the rate of 11% 

has been made. As per norms 

being followed for transmission 

projects, spares should be of the 

order of 3% against 6%, 

Establishment and contingency for 

switchyard should be 8% against 

11% adopted in the draft FR.

MW 





APPENDIX- X 

NRSA Report 

NH/CON/229 01/2004

Satellite Remote Sensing Based Inputs for Initial Environmental Studies in respect of 

Proposed Basania Hydro-Power Site in Narmada River Basin in Madhya Pradesh 

-------------------------------------------------------------------------------------------------------------- 

------ 

1. Study Background 

Central Electricity Authority (CEA) under Ministry of Power, Govt. of India has 

earlier identified 399 potential hydroelectric sites in the country with an 

installed capacity of 1,07,000 Megawatt (MW). With a view to preparing an 

action plan to develop this hydroelectric potential and prioritizing the 

implementation of hydro-electric projects, a Ranking Study was taken up by 

the CEA in 2001. This Ranking Study identified 162 most potential sites with 

a total installed capacity of 50,560 MW for development. 

Preparation of Pre-Feasibility Reports (PFR) of these 162 sites has been 

initiated by the CEA in 2002 with works entrusted to a number of 

Consultants, namely, National Hydroelectric Power Corporation (NHPC), 

North Eastern Electric Power Corporation (NEEPCO), Water And Power 

Consultancy Services India Limited (WAPCOS), Satluj Jal Vidyut Nigam 

Limited (SVJNL) , Himachal Pradesh State Electricity Board ( HPSEB), 

Uttaranchal Jal Vidyut Nigam Limited (UJVNL) and Kerala Power 

Corporation Limited ( KPCL) with time target of completion of the whole 

exercise by September 2003. To oversee the progress of the PFRs 

preparation in time and with full cooperation of the Central Government 

agencies, a Central Coordination Committee consisting of Central Electricity 

Authority (CEA), Central Water Commission (CWC), India Meteorological 

Department (IMD), Ministry of Environment & Forest, Survey of India, 

Geological Survey of India (GSI) and National Remote Sensing Agency 

(NRSA) was constituted by the CEA with Member (Hydro-power) as its 

Chairman. The Committee is sitting periodically in presence of the 

representatives of the Consultants to take stock of the completion of the 

studies. One of the mandates of PFR preparation is “Initial Environmental 

----------------------------------------------------------------------------------------------------------------- 

Prepared for National Hydroelectric Power Corporation Ltd., Faridabad 

By National Remote Sensing Agency, Hyderabad 

1



-------------------------------------------------------------------------------------------------------------- 

------ 

Study” with respect to each of the 162 proposed sites using satellite remote 

sensing data. 

As is well known in India and elsewhere in the World, space technology 

plays a very important role in terrain mapping and scientific assessment of 

the ground condition at speed, and is ideally suitable for inaccessible 

mountainous regions where majority of these hydroelectric dam/diversion 

sites are located. Computer processing of satellite digital data of the dam / 

diversion sites and their surroundings provides wealth of information for 

preparation of the Pre-Feasibility Reports. The potential of this technology 

was amply demonstrated in the preliminary ranking study of the 81 

proposed hydro-electric sites in Indus Basin completed by NRSA in October 

2001 on behalf of CEA. In view of this, NRSA has been approached by a 

number of consultants, namely, NHPC and HPSEB to take up Initial 

Environmental Studies in respect of 37 proposed hydro-power sites located 

in the States of Arunachal Pradesh, Himachal Pradesh, Jammu & Kashmir 

and Madhya Pradesh using most recent satellite remote sensing data. 

The National Hydroelectric Power Corporation at Faridabad has approached 

NRSA for executing the land use - land cover mapping project for five 

hydro-power sites in Indus Basin in Jammu and Kashmir and one site in 

Narmada Basin in Madhya Pradesh. This report deals with proposed hydro- 

power site at Basania in Narmada Basin in Madhya Pradesh. 

2. Objective 

----------------------------------------------------------------------------------------------------------------- 



2



-------------------------------------------------------------------------------------------------------------- 

------ 

Principal objective of the satellite based study is to acquire Indian Remote 

Sensing satellites (IRS 1C/1D) LISS-III and PAN sensor digital data of the 

hydro-power sites and to make quick analysis of these data in terms of 

estimation of the submergence area at proposed Full Reservoir Level (FRL) 

and mapping of land use / land cover information within and in immediate 

surrounding of the proposed submergence area as inputs for Initial 

Environmental Study (IES) of the Pre-Feasibility Report. 

The specific objectives and scope of the study are: 

• To estimate the area of submergence at proposed FRL of the proposed 

hydro-power site 

• To analyze the satellite data for identifying broad land use / land 

cover categories like agricultural land, forest land, barren land, scrub 

land, water bodies, settlements, infrastructural features (roads and 

bridges) and to estimate the area under each of the categories within 

and in immediate surrounding of the proposed submergence area at 

FRL. 

• To prepare land use - land cover map at 1:50,000 scale and/or 

1:25,000 scale of the submergence area and its immediate 

surrounding for the proposed hydro-power site. 

3. Salient Features of the Basania Hydro-Power Site 

Proposed hydro-power site is located at Basania in Mandla district in 

Madhya Pradesh falling in Survey of India (SOI) topo sheets 64B/5, 64B/6, 

----------------------------------------------------------------------------------------------------------------- 



3



-------------------------------------------------------------------------------------------------------------- 

------ 

64B/9, and 64B/10. The proposed project scheme at Basania envisages 

construction of a Dam on Narmada River and a power house with an 

installed capacity of 60 MW. The power house is proposed to be located at 

the toe of the dam site. 

The geographic location of Dam and Power House for this hydro-power site 

is given below: 

Dam Power House 

Latitude: 22° 42’ N 22° 42’ N 

Longitude: 80° 30’ E 80° 30’ E 

4. Satellite Data Used 

Satellite data from Indian Remote Sensing Satellites IRS-IC and IRS-ID were 

browsed from the archives for the period from 2001 to 2003. Cloud free data 

of 02-November-2002 acquired by IRS 1D satellite’s LISS III (23.5 m spatial 

resolution) and PAN (5.8 spatial resolution) sensors were procured from the 

NRSA Data Centre (NDC). The study area is covered by Path-101 and Row- 

56 under the IRS-1D geographic referencing scheme. This data was 

geometrically rectified using sufficient ground control points. The rectified 

LISS III and PAN images were then merged using Brovey Transform 

technique. The merged satellite data was used for further analysis. 

5. Brief Methodology of Satellite Data Analysis 

----------------------------------------------------------------------------------------------------------------- 



4



-------------------------------------------------------------------------------------------------------------- 

------ 

Image processing and analysis were done using ERDAS Imagine image 

analysis software in Windows platform. Baseline information layers (like 

rivers/ streams) and infrastructural features (like roads and bridges), 

settlements / villages were initially interpreted from the satellite data and 

digitized on screen supported with available collateral information. The FRL 

boundary of the proposed dam site as provided by NHPC, Faridabad was 

superimposed on to the satellite image for extracting land use – land cover 

categories. 

Image classification was carried out for the area of interest (AOI) within the 

satellite image using Iso-clustering algorithm. Based on the spectral 

signatures, all the classes were regrouped into different land use - land 

cover classes. This final land use – land cover image was used for 

preparation of maps and extraction of area statistics within the 

submergence area and within the area encircling 7 km radius around the 

dam site. 

Four maps were composed in the image processing system showing satellite 

image data, land use – land cover categories within the submergence area, 

land use-land cover categories within the 7 Km radius of the dam site and 

the location information of the National parks/Sanctuaries near the study 

area. 

6. Outputs Provided 

Based on the analysis of satellite data and other available ancillary 

information, the following outputs were generated: 

----------------------------------------------------------------------------------------------------------------- 



5



-------------------------------------------------------------------------------------------------------------- 

------ 

• Map 1 (a) shows IRS 1D PAN + LISS III merged satellite image of 02- 

November-2002 on 1:50,000 scale covering the proposed hydro-power 

site and it’s environ overlaid with FRL, location of dam site and power 

house. 

• Map 1(b) shows satellite derived land use-land cover map on 1:50,000 

scale covering 7 km radius of the proposed dam site and the reservoir 

submergence area overlaid with FRL, location of dam site and power 

house. Land use – land cover map shows the following categories. 

Forest, Agricultural/ Current Fallow land, Open Scrub, Barren / Rock 

Outcrop, River Course/Dry River Bed. 

• Map 1(c) shows satellite derived land use / land cover map on 

1:50,000 scale covering the reservoir submergence area overlaid with 

FRL, location of dam site and power house. 

• Map 1 (d) shows the location of the Kanha National Park and the 

Phen Wildlife Sanctuary (Source: United Nations Environment 

Programme - World Conservation Monitoring Center - www.unep- 

wcmc.org) vis-à-vis the location of the dam and reservoir 

submergence area. 

Table 1. Land use-land cover Information within the Submergence Area 

S. No. Land use / land cover 

category 

Area (ha) % of the 

total area 

1 High dense forest 2,256 12.6 

2 Open scrub 6,668 37.3 

3 Barren/rock outcrop 1,730 9.7 

----------------------------------------------------------------------------------------------------------------- 



6



-------------------------------------------------------------------------------------------------------------- 

------ 

4 Agricultural/Current 

fallow land 

6,033 33.7 

5 Water bodies 50 0.3 

6 River course including 

dry river bed 

1,156 6.5 

Total 17,893 100 

7 Settlements 50 villages 

8 Road 45.9 km 

Table 2. Land use-land cover Information within 7km Radius of the Site 

S. No. Land use / land cover 

category 

Area (ha) % of the 

total area 

1 High dense forest 4774 31.0 

2 Open scrub 5284 34.3 

3 Barren/rock outcrop 882 5.7 

4 Agricultural/current 

fallow land 

3860 25.0 

5 Water bodies 66 0.4 

6 River course including 

dry river bed 

559 3.6 

Total 15,425 100 

7 Settlements 34 villages 

8 Road 33.7 km 

7. Critical Analysis of Satellite based Initial Environmental Study 

• Total area under submergence of the proposed dam at the design FRL 

water spread map as provided by NHPC, Faridabad is estimated to be 

17,893 ha (Table 1). 

----------------------------------------------------------------------------------------------------------------- 



7



-------------------------------------------------------------------------------------------------------------- 

------ 

• It is observed that the agricultural land dominates, which is 33.7% 

(6,033 ha) of the total submergence area. Agricultural land includes 

the current crop area and the current fallow lands on the date of 

satellite image. Hence land acquisition and compensation of these 

agricultural lands may pose prime concern in the proposed project. 

• The area under forest cover is 2,256 ha, which constitutes 12.6% of the 

submergence area. It is observed that the forest cover entirely 

comprises of dense forest category. 

• It is seen that 37% of the submergence area is under open scrub land 

(6,668 ha) and 9.7 % of the submergence area is under barren/rock 

outcrop (1,730 ha.) land use category. Much of these large tracts of 

open scrub lands and barren/rock outcrop are disused lands which will 

not have any environmental impact by this project. 

• It is observed that the submergence area at FRL and immediate 

vicinity of the proposed dam are habitated with human settlements 

which are well spread across the submergence area. The study area 

manifests not only the large clusters of villages, but isolated 

hamlets/settlements through out the submergence area. It is estimated 

that 50 prominent villages are located within the submergence area, 

apart from many isolated settlements. Therefore, the rehabilitation 

and resettlement of rural settlements and uprooted population may 

pose a big challenge in development of this reservoir storage type 

hydro-power site. 

• 46 km of the district road connecting Mandla and Dindori is 

estimated to be affected by the reservoir submergence, apart from 

----------------------------------------------------------------------------------------------------------------- 



8



-------------------------------------------------------------------------------------------------------------- 

------ 

many other village roads/cart tracks. Since there are more than 50 

villages situated in the submergence area which are thickly inhabited 

and are interconnected by these village roads / cart tracks, the site 

development may involve large re-constructional activities. 

• In addition to the above land use/ land cover categories, there are 

small water bodies (ponds) present in the submergence area with a 

spread of 50 ha. The area covered by the river course including the 

river bed constitutes 6.5 % of the submergence area. 

• In the absence of available information from other sources about the 

existence and spatial extent of national parks and wildlife sanctuaries, 

best efforts were made to collect information from the Internet. The 

information available in website of United Nations Environment 

Programme- World Conservation Monitoring Center (http://www.unep- 

wcmc.org) was browsed through. Based on this, the following 

information is gathered. 

• “Kanha National park” and “Phen Sanctuary” are located 60 km 

away from the proposed dam site. The area extent of these are 94,000 

ha and 11,074 ha. Respectively. However, exact boundary / shape of 

these two National parks / wildlife sanctuary is not available from 

these websites. 

• Efforts were made to check whether the geo-coordinates of these 

National Park and Wildlife Sanctuary are falling within the 

submergence area. The map 1(d) explains the location of the Kanha 

----------------------------------------------------------------------------------------------------------------- 



9



-------------------------------------------------------------------------------------------------------------- 

------ 

national park and Phen wild life sanctuary vis-à-vis the dam site and 

the power house. 

• It is observed that, although maximum fetch distance of reservoir 

submergence is quite large (approx. 25 km), since these two National 

park / wildlife sanctuary are located down stream of the proposed 

dam site in south and south-easterly direction quite far away (about 

60 km) of the dam site, in no way proposed hydro-power project 

would disturb or materially affect the ecosystem of these National 

parks. 

8. Conclusion & Recommendation 

• Satellite based study has provided insight into the land use - land 

cover pattern and their spatial extent within the submergence area at 

FRL and within the 7 Km radius of the proposed dam site. 

• Since large agricultural land is likely to be submerged, acquisition and 

compensation of this land may be of prime concern in the proposed 

project. 

• The proposed dam site is thickly inhabited and the settlements are 

well spread across the submergence area. Socio-economic and 

demographic cost of these settlements needs to be verified on the 

ground. 

----------------------------------------------------------------------------------------------------------------- 



10



-------------------------------------------------------------------------------------------------------------- 

------ 

• Since more than 50 villages need to be evacuated, the rehabilitation 

and resettlement of these villages may pose a big challenge in 

development of this hydro-power site involving high cost. 

• However, since the proposed hydro-power project will be a storage 

reservoir, the benefits accrued from the project in terms of other 

beneficial uses such as irrigation, drinking water, etc apart from 

hydroelectric power generation, needs to be kept in mind while 

weighing the environmental issues. 

• The proposed dam site is approachable by district road connecting 

Mandla and Dindori which runs along the Narmada river course. Part 

of this road needs to be rerouted due to reservoir submergence. Land 

is available for rerouting of this road. 

• Since Kanha National Park and Phen wildlife sanctuary are located 60 

km downstream of the proposed dam site, the development of this 

hydro electric project in no way affect the ecosystem of these National 

parks. 

************* 

----------------------------------------------------------------------------------------------------------------- 



11

BASANIA HEP_PFR - Ministry of Power

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