Decreasing Water Levels in the Caspian Sea: Causes and Implications

By Vali Kaleji

October 13, 2023

Various reports indicate that the water level of the Caspian Sea has decreased by one meter in recent years and could drop by 9 to 18 meters (30 to 59 feet) by the end of the 21st century. Although climate change contributes to this process, Russia’s construction of dams on the Volga River has played an important role in reducing the amount of water entering the Caspian Sea. This will have significant and serious implications, including a decline of the sea water level, a considerable retreat of the sea and increase of the land and coastal area especially in upstream countries (Russia and Kazakhstan), challenges to the operation of ports and shipping, as well as environmental consequences, particularly the drying of protected areas and wetlands.