Clear Lake AVA


Established in 1984, the Clear Lake AVA is a sub-appellation of the North Coast AVA, which also includes Napa, Sonoma, and Mendocino.  The natural freshwater lake at the center of the AVA provides a moderating influence on temperatures which, along with the high elevation, explains why this is one of the coolest wine-growing regions in California.

ElevationVineyard elevations range from 1,300 to 3,000 feet. Higher elevations and Lake County’s pure air allow for greater levels of UV light, as much as 10% more than neighboring sea level valleys. This UV intensity triggers thicker skins, greater tannins and intense wines with high phenolic content.
SoilsVariation is the theme here. From the red, iron-rich volcanic soils of Red Hills to the cinder ash and silt blends of High Valley, the alluvial soils of Big Valley, and the mix of gravel, volcanic, and alluvial soils in Kelsey Bench, the terrain in Clear Lake offers growers and winemakers the opportunity to match grape variety to its ideal location.
Acres174,798 acres
ClimateAs a region, Clear Lake is notable for differences among microclimates, from vineyards planted at lake level to those along volcanic ridges. But two common climate factors are elevation and lake influence. These two factors have a cooling effect on temperatures that can be quite warm during the day. Temperature differences from day to night—the diurnal swing—can be significant, up to 50 degrees or more. This combination of hot days and cool nights allows winegrapes to ripen at a slower rate while developing complexity and maintaining acidity and balance.
VarietalsCabernet Sauvignon, Chardonnay, Muscat, Sauvignon Blanc, and Zinfandel.



    LCWC Finance Committee Meeting 10:00 am
    LCWC Finance Committee Meeting @ Video Conference
    Jun 13 @ 10:00 am – 11:00 am
    Agenda – LCWC Finance Committee Meeting, June 13, 2024
    LCWC Executive Committee Meeting 2:00 pm
    LCWC Executive Committee Meeting @ LCWC Office
    Jun 25 @ 2:00 pm – 3:00 pm
    Agenda – LCWC Executive Committee Meeting, June 25, 2024
    LCWC Board Meeting 3:00 pm
    LCWC Board Meeting @ LCWC Office
    Jun 25 @ 3:00 pm – 5:00 pm
    Agenda – LCWC Board Meeting, June 25, 2024
    Soil Health and Irrigation Water Management 7:30 am
    Soil Health and Irrigation Water Management @ Thomas Mauritson Vineyards
    Jun 26 @ 7:30 am – 11:30 am
    Soil Health and Irrigation Water Management @ Thomas Mauritson Vineyards
    In-the-Vineyard Tailgate Session for Spanish -Speaking Vineyard Workers LEARN HOW TO… Assess, restore, and maintain soil health Implement sustainable farming practices Develop irrigation management plans Event Details Wednesday, June 26, 2024 7:30 a.m. – 11:30[...]
    Grower Conversation Series: Winegrape Wednesdays 4:00 pm
    Grower Conversation Series: Winegrape Wednesdays @ The Mercantile
    Jun 26 @ 4:00 pm – 6:00 pm
    Grower Conversation Series: Winegrape Wednesdays @ The Mercantile
    You are invited to attend the Grower Conversation series hosted by Lake County Winegrowers. This series aims to connect growers, buyers, and industry experts to discuss the climate of today’s market. Each conversation will feature[...]
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