California Shenandoah Valley is an American Viticultural Area (AVA) located within portions of Amador County and El Dorado County, California. The area was established on January 27, 1983 by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), Treasury after approving the petition from the Amador County Wine Grape Growers Association proposing a viticultural area in Amador County, California, to be known as "Shenandoah Valley." It lies within the vast multi-county Sierra Foothills viticultural area boundaries and borders the northwest boundary of Fiddletown viticultural area which received recognition later the same year. In the petition, the area consists of approximately 10,000 acres (16 sq mi) with about1,200 acres (486 ha) under vine. The petition requested ATF for the Shenandoah Valley viticultural area to be situated to the north and west of Fiddletown, and to the north and east of Plymouth.