Tollhouse Canyon stock image, west walker river, mono county, California

The West Walker River is a tributary of the Walker River, in eastern California and western Nevada in the United States. It drains part of the Sierra Nevada range along the California-Nevada border in the watershed of Walker Lake in the Great Basin. The river derives its name from Joseph R. Walker, a mountain man. It rises from snowmelt in the Sierras of northwestern Mono County, north of Yosemite National Park.