Reservoir

A reservoir (; from French réservoir [ʁezɛʁvwaʁ]) is an enlarged lake behind a dam, usually built to store fresh water, often doubling for hydroelectric power generation. Reservoirs are created by controlling a watercourse that drains an existing body of water, interrupting a watercourse to form an embayment within it, excavating, or building any number of retaining walls or levees to enclose any area to store water.

Extends: Reservoirs, [Lakes by type](https://wikipedia.org.ai/Lakes by type), [Artificial lakes](https://wikipedia.org.ai/Artificial lakes), [Bodies of water](https://wikipedia.org.ai/Bodies of water)