Manimala
|
Basin area, km2
|
:
|
847
|
|
Basin area in Kerala State, km2
|
:
|
847
|
|
District of Kerala in which basin are located
|
:
|
Kottayam, Pathanamthitta
|
|
Origin of River
|
:
|
Tatamala Elevation. m : 1156
|
|
Length of main stream, km
|
:
|
90
|
|
Main tributaries
|
:
|
Kokayar & Elakkalthodu
|
|
Average annual rainfall, mm
|
:
|
3300
|
|
Average annual streamflow, Mm3
|
:
|
1560.74
|
|
Important rainguage stations marked on the map (with code numbers)
|
:
|
1. Changanacherry (1)
2. Thiruvalla (2)
|
|
Important discharge stations marked on the map(with code numbers)
|
:
|
1. Manimala (1)
2. Thondara (2)
|
|
Water requirement for wetland for three crops, Mm3
|
:
|
378
|
|
Water requirement for gardenland , Mm3
|
:
|
24
|
|
Water requirement for domestic use (2021 AD), Mm3
|
:
|
85.60
|
|
Water requirement for industrial use (2021 AD), Mm3
|
:
|
90
|
|
Navigable length of river, km
|
:
|
54.4
|
(Note:. It is an important water way of Central Travancore. Rising in the hills of Kottayam-Idukki ranges, the river flows through the midland plains and joins with Pampa and Manimala junction. The river offers a beautiful view at this spot and flows swiftly striking against the many rocks in the river.)