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|⁃ location||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.
- Periyar - Main river
Other major tributaries of Periyar river
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