The Mithi River (aka Mahim River) is a river on Salsette Island, the island of the city of Mumbai, India. It is a confluence of tail water discharges of the Powai and Vihar lakes. The river is seasonal and rises during the monsoons. The overflowing lakes also contribute to the river flow which is stopped by a dam in other times. During this season the river is a favourite with the anglers who catch large fish that have escaped from the lakes. Fishing is banned there. The international airport is located right next to the section of river, at Andheri.