Big Valley District-Lake County AVA
| Wine region | |
| Type | American Viticultural Area |
|---|---|
| Year established | 2013 |
| Country | United States |
| Part of | Lake County, Clear Lake AVA |
| Other regions in Lake County, Clear Lake AVA | 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 conditions | Clay and still loam |
| Total area | 11,000 acres (4,452 ha) |
| Size of planted vineyards | 1,800 acres (728 ha) |
| No. of vineyards | 43 |
| Varietals produced | Cabernet Franc, Chardonnay, Merlot, Riesling, Sauvignon blanc, Viognier, Zinfandel |
| No. of wineries | 6 |
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 1,800 acres (728 ha) when officially established by the Alcohol and Tobacco Tax and Trade Bureau (TTB) in October 2013 alongside the adjacent Kelsey Bench AVA.
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.
Sauvignon blanc makes up the majority of the region's plantings in addition to Zinfandel and Cabernet Franc.