Washoe Lake is a lake located near Carson City in the Washoe Valley of Washoe County, Nevada. It is a very shallow lake with a surface area that can vary greatly from year to year. Washoe Lake State Park sits on the lake's southeastern shore.

The Washoe Valley is a geographical region in the United States covering 66 square miles (170 km2) in southern Washoe County in the state of Nevada. Located between Reno and Carson City, it is named for the Washoe people, Native Americans who lived there before the arrival of Europeans. Slide Mountain and Mount Rose overlook the valley from the west.