Enayam Port

Tamil Research Institute
RAPID TECHNO-ECONOMIC FEASIBILITY REPORT FOR
DEVELOPMENT OF COLACHEL PORT AT TAMILNADU
FINAL REPORT
Figure 18. Kanyacumari rivers. Source: Mapsofindia.com
3.2.3.2. Estuaries
There are three important riverine ecosystems, which confluence with Arabian Sea, in Tamil Nadu:
Thengapattinam estuary, formed by river Tampirabarani in between Thengapattinam and Eraiummanthurai (in
North-East), Valliyar estuary formed by the river Valloiyar near Kadiapattinam (in Sout-West) and Manakudy
estuary formed by the confluence of river Pazhayar in Manakudy, in Kanyakumari in the study area.
Apart from these are three minor estuaries in Kanyakumari. They are Enanyumanthurai estuary near
Thengapattanam, Pambar estuary near Colachel and Pantri estuary near Rajakkamangalam.
These are formed by the drainage canal excess waste during monsoon and the water drained from the
irrigational fields mixing with sea.
3.2.3.3. Flood
The flood hazard map of India is given in next figure. As per the map, the Tamu Ladi is flood prone and has a
probable maximum surge height of 3.0 m. Flood in Kanyakumari are highly localised due to undulating terrain
features except sandy plan coastal areas. Land ward side of the project area is highly undulating with hills and
valleys. Generally, the low lying areas get flooded during the south west monsoon season. The worst flooding
ever reported from 1905 to 2005 due to rainstorms was in July 1994, in which 209 human lives were lost and
crop worth 1445 million was damaged (De et al 2005).
CP1832-FR-AX-05-CP-Initial Environmental Examination-Ed4.docx AX05 - 34
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