| Big Valley District-Lake County AVA | |
| Type: | American Viticultural Area |
| Year: | 2013[1] |
| Country: | United States |
| Similar: | Clear Lake AVA, Guenoc Valley AVA, High Valley AVA, Kelsey Bench-Lake County AVA, Long Valley-Lake County AVA, Red Hills Lake County AVA, Upper Lake Valley AVA |
| Soil: | Clay and still loam |
| Total Size: | 11000acres[2] |
| Planted: | 1800acres |
| Vineyards: | 43[3] |
| Varietals: | Cabernet Franc, Chardonnay, Merlot, Riesling, Sauvignon blanc, Viognier, Zinfandel |
| Wineries: | 6[4] |
Big Valley District-Lake County is an American Viticultural Area located in Lake County, California. There were 6 wineries within the viticultural area, as well as 43 commercially-producing vineyards covering approximately 1800acres when officially established by the Alcohol and Tobacco Tax and Trade Bureau (TTB) in October 2013 alongside the adjacent Kelsey Bench AVA.[5] Big Valley District is in a large valley near Clear Lake, the Mayacamas mountain range, and the Mount Konocti volcano. The AVA is in the less hilly area near Kelseyville; the hillier areas are part of the Kelsey Bench. Big Valley is a structural basin that is part of the larger Clear Lake basin.[5] [2]
Sauvignon blanc makes up the majority of the region's plantings in addition to Zinfandel and Cabernet Franc.[4]