query: Is the Caspian Sea saltwater?
passage: Caspian Sea
The sea has a surface area of 371,000 km2 (143,200 sq mi) (not including the detached lagoon of Garabogazköl) and a volume of 78,200 km3(18,800 cu mi). It has a salinity of approximately 1.2% (12 g/l), about a third of the salinity of most seawater.
passage: Tver Oblast
The region is a watershed of the Caspian Sea and Baltic Sea . [1 ] In the south, Belsky district has several tributaries of the upper reaches of the river Vop, the right tributary of the Dnieper River (basin of the Black Sea). Go to the Caspian Sea basin owns 70% of the region, the Baltic Sea - 29.7%.