Table of Contents
West flowing rivers from Tadri to Kanyakumari
Description
The basin extends over states of Kerala, Karnataka, Tamil Nadu and Union Territory of Puducherry having an area of 56,177 Sq.km which is 1.73 % of total geographical area of the country with a maximum length and width of 777 km and 135 km. It spreads between 74°25’ to 77°36’ east longitudes and 8°3’ to 14°24’ north latitudes. The basin is bounded by Sahyadri hills on the north, by the Western Ghats on the east, by Indian Ocean on the south and by the Arabian Sea on the west. The major independent rivers (directly draining into Arabian Sea) in the basin are the Varahi, the Netravati, the Payaswani, the Valapattanam, the Chaliyar, the Kadalundi, the Bharathapuzha, the Periyar, the Muvattupula, the Minachil, the Pamba, the Achankovil, the Kallada and the Vamanapuram. The major part of basin is covered with agriculture accounting to 50.82% of the total area while 3.65% is covered by water bodies. The basin spreads over 30 parliamentary constituencies (2009) comprising 20 of Kerala, 6 of Karnataka and 3 of Tamil Nadu and 1 of Puducherry.
| Salient Features | |
| Basin Extent Longitude Latitude | 74° 25’ to 77° 36’E 8° 3’ to 14° 24’ N |
| Length of River (Km) | Many independent rivers flowing |
| Catchment Area (Sq.km.) | 56177 |
| Average Water Resource Potential (MCM) | 113530 |
| Utilizable Surface Water Resource(MCM) | 24300 |
| Live Storage Capacity of Completed Projects (MCM) | 11013.0 |
| Live Storage Capacity of Projects Under Construction (MCM) | 1418.0 |
| Total Live Storage Capacity of Projects (MCM) | 12431.0 |
| No. of Hydrological Observation Stations (CWC) | 29 |
| No. of Flood Forecasting Stations (CWC) | 0 |
Interstate Agreements
1. Indenture Dated 29th October, 1886 between the secretary of state for India and the Maharaja of Travancore regarding the Periyar Irrigation Project. view
2. Summary record of decision taken at the Inter-state meeting held on 14th October, 1965 between the Governments Madras and Kerala regarding inter-state irrigation and Hydel projects under Pandiar- Punnapuzha, and Chali Puzhacholatti puzha Schemes. view
3. Agreement Dated 10th May, 1969, between the Governments of Kerala and Tamil Nadu regarding Parambikulam Aliyar Project and other rivers. view
4. Agreement Dated 29th May, 1970 between the Governments of Kerala and Tamil-Nadu regarding the periyar Irrigation Project. view
5. Agreement Dated 29th May, 1970 between the Governments of Kerala and Tamil-Nadu regarding Parambikulam aliyar project. view
6. Agreement Dated 29th may, 1970 between the Governments of Tamil-Nadu and Kerala regarding Periyar Hydro Electric. view
7. Agreement Dated 29th May, 1970 amending the periyar lease deed of 1886 between the Govt. Of Kerala and Tamil Nadu. view
8. Summary record of decision taken at the Inter-state meeting held on 8th march, 1974 between the Governments of Kerala and Tamil- nadu regarding Parambikulam Aliyar Project. view
Major Water Resources Project
1. Sharavati Hydro Power Complex (Karnataka)
2. Varahi Hydro Power Complex (Karnataka)
3. Idamalyar HE Project (Kerala)
4. Sholayar HE Project (Tamil Nadu)
5. Idukki HE Project (Kerala)
6. Kallada Irrigation Project (Kerala)
7. Pamba Irrigation Project (Kerala)
8. Neyyar Irrigation Project (Tamil Nadu & Kerala)
