October 2009 - South Tahoe Public Utility District

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3.3 Upper Dressler Ditch The purpose of the Upper Dressler Ditch is to divert runoff water from the local Harvey Place watershed into Indian Creek Reservoir. The Ditch also serves as a means of delivering Indian Creek flushing water and makeup water from Indian Creek and the West Fork of the Carson River to Indian Creek Reservoir. The ditch runs as a contour canal along the 5,640-5,620 foot contour lines with a bed slope of 0.00150 ft/ft. The length of the open portion is 5,170 feet (a mixture of trapezoidal concrete sections and irregular earthen ditch sections). The earthen sections have very high transmission losses, making the conveyance efficiency of the ditch very poor. Actions to improve the conveyance efficiency and reduce the extensive annual maintenance requirements have been outlined in this Master Plan, as presented in Section 11 (page 11-81). 3.4 Indian Creek Reservoir Indian Creek Reservoir is a 2,800 acre-foot freshwater storage reservoir constructed in 1967 for the storage of tertiary treated recycled water from the District‟s Wastewater Treatment Plant (WWTP). The reservoir was converted to freshwater in 1989, upon the completion of Harvey Place Reservoir. Indian Creek Reservoir operations mandate that the maximum storage pool is at 5,600 feet above sea level or 56 feet on the reservoir stage height gauge. The minimum pool is approximately 1,515 acre-feet at a gauge height of 45 feet. The District contract with Alpine County lists 45 feet as the minimum level the reservoir may reach in a normal year and 40 feet in dry years. In addition, the U.S. District Court Water Master requires the reservoir to be lowered to the 45 foot level by November 1 st of each year. The District must pass through any water accumulated in Indian Creek Reservoir in excess of that necessary to maintain an elevation of 45 feet on the staff gauge corresponding to the storage of 1,515 acre-feet. This elevation ensures the Water Master that no seasonal carryover of water has occurred. Figure 3.2 (page 3-17) is the reservoir area and capacity curve for Indian Creek Reservoir. The reservoir volume is the bottom axis and the surface area in acres is the top axis. South Tahoe Public Utility District Recycled Water Facilities Master Plan - October 2009 Page 3-16
Figure 3.2: Indian Creek Reservoir Storage Capacity Curve South Tahoe Public Utility District Recycled Water Facilities Master Plan - October 2009 Page 3-17
Page 1 and 2: South Tahoe Public Utility District
Page 3 and 4: Table of Contents List of Tables ..
Page 5 and 6: 6.4.3 Endangered Species Act ......
Page 7 and 8: Section 13: 12.4 Potential Temporar
Page 9 and 10: 11.2 - Indian Creek Freshwater Trea
Page 11 and 12: Executive Summary Introduction, Pur
Page 13 and 14: Through a process of public partici
Page 15 and 16: Table ES-2 presents vital numbers r
Page 17 and 18: Section 7 - Master Plan Development
Page 19 and 20: Section 1: Introduction The purpose
Page 21 and 22: agreement between South Lake Tahoe
Page 23 and 24: irrigation ditches were used to irr
Page 25 and 26: Agreement Name 1967 Agreement Harve
Page 27 and 28: Agreement Name Celio Agreement Tent
Page 29 and 30: Section 2: Study Area 2.1 Descripti
Page 31 and 32: ecycled water facilities and public
Page 33: Section 3: Existing Freshwater Syst
Page 37 and 38: Section 4: Existing Recycled Water
Page 39 and 40: Farm lateral must be intact to util
Page 41 and 42: 4.2.1.3 Neddenriep Ranch Partnershi
Page 43 and 44: Development in areas currently rece
Page 45 and 46: Flow (MGD) Section 5: Flow Projecti
Page 47 and 48: Table 5.0: Recycled Water Flow and
Page 49 and 50: Volume of Recycled Water (AFY) Tabl
Page 51 and 52: estimated 2028 population of 33,900
Page 53 and 54: Figure 5.2.1(b): NO 3-N versus Time
Page 55 and 56: Figure 5.2.1(f): Total Dissolved So
Page 57 and 58: 5.2.4 Groundwater Monitoring The Di
Page 59 and 60: Section 6: Recycled Water Quality R
Page 61 and 62: Services (DHS) to establish water r
Page 63 and 64: „Secondary treatment‟ means the
Page 65 and 66: 6.4.4 Section 401 of the Clean Wate
Page 67 and 68: Section 7: Master Plan Development
Page 69 and 70: ● ● ● ● ● To maximize rec
Page 71 and 72: annually. This inconsistency can be
Page 73 and 74: Each workshop conducted in 2001 was
Page 75 and 76: Section 8: Development of Projects
Page 77 and 78: Table 8.1 Recycled Water Facilities
Page 79 and 80: Section 9: Recycled Water Infrastru
Page 81 and 82: Several options exist for efficient
Page 83 and 84: Reservoir outlet facility to Diamon
Page 85 and 86:
9.4.1 Project Description The desig
Page 87 and 88:
9.5.1 Project Description Improveme
Page 89 and 90:
monitoring and SCADA control system
Page 91 and 92:
Pressure required to allow full fun
Page 93 and 94:
elatively minor in comparison to op
Page 95 and 96:
Section 10: Recycled Water Manageme
Page 97 and 98:
with recycled water. This and other
Page 99 and 100:
Section 11: Fresh Water Infrastruct
Page 101 and 102:
Like Project No. 14 (page 11-81), p
Page 103 and 104:
available storage volume of the Res
Page 105 and 106:
Section 12: Fresh Water Management
Page 107 and 108:
Section 13: Master Plan Implementat
Page 109 and 110:
13.2 Recycled Water Production Trig
Page 111 and 112:
Ranch Total Acreage Table 13.1 - Ac
Page 113 and 114:
13.3 Regulation Triggered Project I
Page 115 and 116:
District to realize an economic ben
Page 117 and 118:
pipeline from the beginning of the
Page 119 and 120:
13.8 Capital Improvement Plan The M
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2) Construct Project No.‟s 1, 2,
Page 123 and 124:
13.9.3 Groundwater Monitoring Recom
Page 125 and 126:
It is recommended that District imp
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October 2009 - South Tahoe Public Utility District

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