Country United States Area 44.52 km² Part of Napa Valley AVA | Total area 11,000 acres (45 km) Year established 2011 | |
Type American Viticultural Area Other regions in Napa Valley AVA Calistoga AVA, Chiles Valley AVA, Diamond Mountain District AVA, Howell Mountain AVA, Los Carneros AVA, Mt. Veeder AVA, Atlas Peak AVA, Oak Knoll District of Napa Valley AVA, Oakville AVA, Rutherford AVA, Spring Mountain District AVA, St. Helena AVA, Stags Leap District AVA, Wild Horse Valley AVA, Yountville AVA Varietals produced Cabernet Sauvignon, Chardonnay, Pinot noir, Syrah | ||
The Coombsville AVA is an American Viticultural Area located within the Napa Valley AVA just east of the city of Napa. The appellation varies from near sea level at the Napa River on the west to 1,900 feet at the ridge of the Vaca Mountain Range. Proximity to San Pablo Bay contributes to the temperate climate of Coombsville. Cooling effects of marine air and fog occur almost daily during the growing season, arriving earlier and lingering longer than in the more northern regions of Napa Valley. Temperatures are less extreme during the winter frost season. The Coombsville soils are dominated by the volcanic rhyolitic tuff sedimentary rock and lava flows of the Vaca Range on the eastern side of the Napa Valley. Located in the wide alluvial deposits created by the wearing down of the hillsides the Coombsville soils contain abundant rock, gravel and, in some areas, are layered with volcanic ash deposits from Mount George. The appellation was officially designated the 16th sub-appellation of the Napa Valley AVA on December 14, 2011.