Achankovil River, Achankovilaru in the vernacular, is formed by the confluence of several small streams originating from the hills of Rishimala, Pasukidamettu and Ramakkalteri in eastern
Kerala. This small river, less than 130 km long, passes through Mavelikkara,
Thiruvalla and Karthikapally Taluks before joining the Pamba River at Veeyapuram in
Alappuzha District.
Pandalam, the place associated with Lord Ayyappa, is on the banks of this river. The Achankovil Dam is built on this river.
