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. (February 2013)
||Kottamalai peak in the Periyar Tiger Reserve
||Periyar at Mullakudy
Mullayar River is a tributary of the Periyar River, the longest river in Kerala. It originates at Kottamalai peak  in the Periyar Tiger Reserve. The Mullayar flows west through the reserve  and joins the Periyar at Mullakudy  just at the beginning of the Periyar lake formed by the Mullaperiyar dam.
Other major tributaries of Periyar river