||777 sq. km.
||Longitude:76 55- 77
26 E, Latititude:9 16 9 40
||Theni,Tirunelveli & Ramnad
districts of Tamil Nadu
Terrain & Geomorphology
Terrain is undulating with lofty peaks of over 1700 meters bordering
the north and east. Towards the west it merges into an extensive
tableland Mount Plateau of average elevation 1200 meters.
From the edge of this plateau the land falls steeply to the thickly
forested tracts of Sabarimala hills in the Pamba River basin.
The overall elevation ranges from 100 meters at Pambavalley to 2019
meters at Kottamalai.
||granites and gneisses
||laterite, fine loamy, with large
amount of quartz gravel formed from crystalline rock.
Climate & Rain fall
The temperature ranges from 15C in December and January and
up to 31C in April & May.
The Annual rainfall ranges from 2000 mm to 3000 mm.
Twothirds of the rainfall occurs during the southwest monsoon
from June to September. The northeast monsoon impacts from October
to December. There are some pre-monsoon showers from mid April.
Periyar and Pamba
Area of lake : 26 sq. km. (at max. water level)