The River Daugava or Western Dvina is a river rising in the Valdai Hills, Russia, flowing through Russia, Belarus, and Latvia, draining into the Gulf of Riga in Latvia, an arm of the Baltic Sea. The total length of the river is 1,020 km (630 mi): 325 km (202 mi) in Russia, 338 km (210 mi) in Belarus, and 352 km (219 mi) in Latvia. It became connected to the Berezina and Dnieper rivers in the 19th century by a canal, which no longer functions.