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Uploaded on Wednesday 22 Feb 2012 by GRID-Arendal

Annual flow of water to the Caspian Sea

Year: 2007
From collection: Vital Caspian Graphics
Author: Philippe Rekacewicz, UNEP/GRID-Arendal
Most of the water flowing into the sea comes from coastal rivers – currently supplying 300 to 310 cubic km a year. The Volga alone accounts for 80% of inflow. But it has dropped substantially during the 20th century, declining from about 400 cubic km in the 1920-30s to between 260 cubic km and 270 cubic km at present, due to various climatic factors and human activities such as dams built for hydroelectric energy production.
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