The Bridgeport Valley is a large, fertile mountain basin between the eastern Sierra Nevada and the Bodie Hills of the U.S. state of California. The valley is long and wide, and is used primarily for ranching. The East Walker River is the main stream flowing through the Bridgeport Valley; tributaries include Robinson and Swauger Creeks. The only town in the valley is Bridgeport, near Bridgeport Reservoir, which is formed by a dam that floods the northern end of the valley.