The Curonian Lagoon (or Bay, Gulf; Russian: Куршский залив, Lithuanian: Kuršių marios, Polish: Zalew Kuroński, German: Kurisches Haff) is separated from the Baltic Sea by the Curonian Spit. Its surface area is 1,619 square kilometers (625 sq mi). The Neman River supplies about 90% of its inflows; its watershed consists of about 100,450 square kilometres in Lithuania and Russia's Kaliningrad Oblast.
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