Isabella

Lake Isabella was once a reservoir in New California, used by the New California Republic for their water supply.

Background
Using the reservoir with the aid of its neighbouring dam, the Isabella supplied the Republic with water for some time, before the aquifer was completely drained of everything it had, and the dam was neglected. The Isabella then became nothing more than a large trail of mud and dust.

Appearances
Lake Isabella is mentioned only in Fallout: New Vegas.