Pennaiyar Basin
Pennaiyar Basin is the second largest interstate East flowing river basin among the 12 basins lying between Pennar and Cauvery basins. It covers a large area in the State of Tamil Nadu besides the areas covered in the states of Karnataka and Andhra Pradesh. The basin is located between the geographical co-ordinates Latitude 110 38’30” N & 120 54’00” N and Longitude 770 39’30” E & 790 54”.15” E. The total area of the basin in Tamil Nadu is 11,375.55sq.km and that of Union Territory of Pondicherry is 90 Sq.km.
Pennaiyar Basin is consist of 19 Sub basins and their areal extent are as follows
|
Name of the Sub-basins |
Total area of the Sub-basin (sq.km) |
|
Aliyar |
211.07 |
|
Chinnar - West |
125.32 |
|
Chinnar - East |
307.96 |
|
Gadilam |
1562.90 |
|
Kambainallur |
919.28 |
|
Kottapattikallar |
410.23 |
|
Krishnagiri To Pambar |
894.52 |
|
Lower Pennaiyar |
561.96 |
|
Markandanadhi |
368.21 |
|
Matturar |
58.50 |
|
Musukundanadhi |
179.26 |
|
Pambar |
1757.42 |
|
Pambanar And Varattar |
292.09 |
|
Pambar To Thirukovilur |
1002.39 |
|
Ramakal Odai |
14.41 |
|
Thurinjalar |
853.62 |
|
Upto Krishnagiri Reservoir |
772.64 |
|
Valayar Odai |
85.39 |
|
Vaniyar |
998.39 |
 |
|---|
|
|
Hydrological Variables
Base Period (1985-2014) Near Century (2021-2050)
PCP - Precipitation; SURQ - Surface Runoff; ET - Evapotranspiration - All units are in mm
Climate Risk
Base Period (1985-2014) Near Century (2021-2050)