Livermore Valley|
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| Type | American Viticultural Area |
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| Year established | 1982
2006 Expansion |
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| Country | United States |
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| Part of | California, Central Coast AVA, San Francisco Bay AVA |
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| Other regions in California, Central Coast AVA, San Francisco Bay AVA | Santa Clara Valley AVA, Lamorinda AVA, Contra Costa AVA |
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| Growing season | 254 days |
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| Climate region | Region II-III |
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| Heat units | 2,501–3,425 GDD |
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| Precipitation (annual average) | 14.45 in (367 mm) |
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| Soil conditions | Yolo-Pleasanton associations with the Livermore gravelly, sandy loam |
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| Total area | 96,000 acres (150 sq mi)
2006: 259,000 acres (405 sq mi) |
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| Size of planted vineyards | 3,000 acres (1,214 ha)
2006: 4,355 acres (1,762 ha) |
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| Grapes produced | Barbera, Cabernet Franc, Cabernet Sauvignon, Chardonnay, Chenin blanc, Cinsault, Colombard, Counoise, Gewurztraminer, Grenache, Malbec, Merlot, Mourvedre, Muscat Canelli, Nebbiolo, Petit Verdot, Petite Sirah, Pinot blanc, Pinot gris, Pinot noir, Roussanne, Sangiovese, Sauvignon blanc, Semillon, Souzao, Syrah, Tempranillo, Touriga Francesa, Touriga Nacional, Viognier, Zinfandel |
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| No. of wineries | 50+ |
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Livermore Valley is an American Viticultural Area (AVA) in Alameda County, California, centered around the city of Livermore in the Tri-Valley region which is composed of Amador, San Ramon, and Livermore valleys. The valley was named by Robert Livermore, an 18th-century landowner whose holdings encompassed the area who planted the first grapevines in the region. The 96,000 acres (150 sq mi) AVA was established on August 31, 1982 by the Bureau of Alcohol, Tobacco and Firearms (ATF), Treasury after reviewing the petition submitted by fifteen Livermore Valley vintners and growers to establish a viticultural area in Alameda County named "Livermore Valley."