Basin area in Kerala State, km²

:

384

District of Kerala in which basin are located

:

Idukki

Origin of River

:

Benmore Elevation.m : 1950

Length of main stream, km

:

25 (Kerala)

Main tributaries

:

Iravikulam,Myladi,Thirthmala,Chengalar

Average annual rainfall, mm

:

1800

Average annual streamflow, Mm³

:

516

Important rainguage stations marked on the map (with code numbers)

:

1.     Marayur (1)

2.     Koilkadavu (2)

3.     Kanthallor (3)

4.     Sothparai E. (4)

Important discharge stations marked on the map (with code numbers)

:

1.     Champakad (1)

Water requirement for wetland for three crops, Mm³

:

274

Water requirement for gardenland , Mm³

:

24

Water requirement for domestic use (2021 AD), Mm³

:

1.94

Water requirement for industrial use  (2021 AD), Mm³ 

:

20