The San Cristobal Wash drains northwest, but exists only in the southern half of the valley.
The Gila River valley and Interstate 8 in Arizona are at the north end of the valley between the communities of Mohawk and Dateland.
The valley is bordered by two mountain ranges to the east: the Aguila Mountains in Yuma County, with an eastern end crossing into southwestern Maricopa County, and the Granite Mountains of extreme western Pima County.
Southern regions of the valley are in the Barry M. Goldwater Air Force Range-Cabeza Prieta National Wildlife Refuge.
This Yuma County, Arizona location article is a stub.