Wikipedia[1], and probably most dictionaries, disagrees: > A reservoir (from French réservoir – a "tank") is, most commonly, an enlarged natural or artificial

Wikipedia[1], and probably most dictionaries, disagrees: > A reservoir (from French réservoir – a "tank") is, most commonly, an enlarged natural or artificial lake, pond or impoundment created using a dam or lock to store water. I've been to plenty of reservoirs with "lake" in the name, and I didn't realize the closest lake to my childhood home was a reservoir until I was a teenager, and the name didn't have reservoir in the name. [1] https://en.m.wikipedia.org/wiki/Reservoir https://en.m.wikipedia.org/wiki/Reservoir