Koyna Dam is built across river koyana in Koyna Naga Maharashtra with a height of 103m. It is one of the largest dams in Maharashtra located at western ghats. The lake founded by the Koyna dam is called The Shivaji Lake, the area is surrounded with the natural beauty of Sahyadri Mountains Ranges. Height: 339 ft. Length: 2,648 ft Type: RubbleConcrete dam River: Koyna River Location: Maharashtra Installed capacity: 1,920 MW.