Russian Dnepr ancient Borysthenes.
River, eastern central Europe.
One of the longest rivers in Europe, it rises west of Moscow and flows south through Belarus and Ukraine, emptying into the Black Sea after a course of 1,420 mi (2,285 km). More than 300 hydroelectric plants operate in the Dnieper basin, and it has several huge dams. Navigable for about 1,042 mi (1,677 km) during the 10 months of the year when it is not frozen, it is an important shipping artery for eastern Europe.