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lakes 
Bodies of water varying in size and completely surrounded by land.
artificial lake 
Lake created when a dam is built on a watercourse.
oasis 
Desert zone made fertile by the presence of underground or surface water.
oxbow lake 
Lake that occupies the oxbow of a watercourse.
glacial lake 
Lake that fills a basin dug out by a glacier, whose meltwater then forms the lake.
volcanic lake 
Lake that fills the crater of an extinct volcano.
tectonic lake 
Lake that occupies a natural basin resulting from a collapse of the Earth’s crust.