Muthirapuzha River is one of the major tributaries of the Periyar River, the longest river in Kerala state south India. It begins in remote forests above the Pooyamkutty- Edamalayar valley in Ernakulam district of Kerala, and joins the Periyar at Kunchithanny See also Periyar River - Main river Other major tributaries of Periyar river Mullayar Cheruthoni Perinjankutti Edamalayar Rivers of Idukki district Periyar (river)