![The Idamalayar Dam is located on the Idamalayar River, a tributary of the Periyar River in Kerala, South India.
Idamalayar River originates in the Anaimalai Hills at elevation of 2,520 metres (8,270 ft). The river is a perennial source draining a catchment area of 381 km2 (147 sq mi) with a topography of high relief. The catchment receives annual rainfall of 6,000 millimetres (240 in), 90% of which occurs during the monsoon months of June to September.[5]](https://mediaim.expedia.com/destination/2/3495fb81e6d4e33401bd5e5aba97e101.jpg?impolicy=fcrop&w=1200&h=500&q=medium)
Photo by Anudath Brahmadathan
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