The Rybinsk artificial lake (Rybinskoye vodokhranilishche) is a large water reservoir on Volga River and its tributaries Sheksna and Mologa. The Rybinsk dam was constructed in 1941, and the lake finally filled in 1947. Some 150,000 people had to be resettled elsewhere, and the town of Mologa has completely disappeared under water.

Area 4580 sq km, volume 25,5 cu km.

Shipping lanes, fishing. Ports: Cherepovets, Vesyegonsk.