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Caspian Sea

June 26, 2026

Recent data suggests that since the mid-1990s, the Caspian Sea has lost roughly 24,000km² of surface area and Water levels have fallen by about two metres.

About Caspian Sea:

  • It is the world’s largest water body that is enclosed or bordered by land on all sides. 
  • Location: It is located between Asia and Europe.
  • The sea’s name derives from the ancient Kaspi peoples, who once lived in Transcaucasia to the west.
  • Basin: It is an endorheic basin (drainage basin without an outflow).
  • Bordering countries: It is bordered by Russia and Azerbaijan on the west, Kazakhstan and Turkmenistan on the north and east, and Iran on the south. 
  • The composition of the water of the Caspian Sea also varies from almost fresh in the northern parts of the lake to saltier southwards. 
  • Water Source: Three major rivers—the Volga, the Ural, and the Terek—empty into the Caspian from the north. 
  • Cities on Caspian Sea: Baku, the capital of Azerbaijan, is the largest city on the Caspian. Another important city along the Caspian is Iran’s Nowshahr.
  • Islands: The largest are Chechen, Tyuleny, Morskoy, Kulaly, Zhiloy, and Ogurchin.
  • Resources: It is also known for its abundance of energy resources (oil and natural gas reserves in offshore fields and onshore on the coast of the sea).

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