Walker Lake is a natural lake, 50.3 mi² (130 km²) in area, in the Great Basin in western Nevada in the United States. It is 18 mi (29 km) long and 7 mi (11 km) wide, in northwestern Mineral County along the east side of the Wassuk Range, about 75 mi (120 km) southeast of Reno. The lake is fed from the north by the Walker River and has no natural outlet except absorption and evaporation.