Map via the TTB AVA Explorer
On May 23 (2022) the TTB (Alcohol and Tobacco Tax and Trade Bureau) of the United States announced the approval of the West Sonoma Coast American Viticultural Area (AVA). The newly minted AVA is located entirely within the existing Sonoma Coast AVA and is a sub-appellation of the larger North Coast AVA. The West Sonoma Coast AVA—which encompasses the existing Fort Ross-Seaview AVA—represents the 19th AVA located in Sonoma County.
The West Sonoma Coast AVA hugs the coastline of Sonoma County and exhibits an overall cool, maritime climate often described as cool enough to be marginal. The AVA currently contains more than fifty commercial vineyards (totaling just over 1,000 acres) planted within five to seven miles of the Pacific Ocean. The leading grape varieties include Pinot Noir, Chardonnay, and Syrah.
According to the original petition to establish the AVA—originally submitted to the TTB in December of 2018 by Patrick L. Shabram on behalf of the members of the association of West Sonoma Coast Vintners—the distinguishing features of the West Sonoma Coast AVA include its topography, geology, and climate, as described below.
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Topography: The West Sonoma Coast AVA is rugged territory, much of it defined by the steep mountains and ridgelines of the California Coast Range. The mountains in this area—often referred to as the Sonoma Coast Highlands—can reach as high as 1,000 feet/31 meters asl. Many of the vineyards are planted on the hillsides and mountain slopes, which are typically in excess of 5 degrees.
Geology: Much of the area within the West Sonoma Coast AVA consists of sedimentary bedrock and soils of the Franciscan Complex (which includes greywacke, shale, and sedimentary conglomerates). Rocks of the Franciscan Complex are not easily eroded, which contributes to the rugged ridgelines and steep slopes of the region. The soils have a high level of sand content, providing excellent drainage and low fertility.
Climate: As evidenced by its location, the West Sonoma Coast is a maritime climate highly influenced by coastal breezes, fog, and cool temperatures—much more so even than the surrounding areas including the Russian River Valley, Petaluma Gap, and the interior areas of the Sonoma Coast AVA. The West Sonoma Coast AVA is truly positioned to be a leader in cool climate viticulture!
When the West Sonoma Coast AVA comes into force on June 22 (2022), the total number of AVAs in the United States will be 262. Of these, 144 will be in California.
Welcome to the world, West Sonoma Coast AVA!
References/for more information:
- Final Rule-May 23 2022-West Sonoma Coast AVA
- Click here for a map of the vineyards of the West Sonoma Coast AVA, via the website of the West Sonoma Coast Vintners
Post authored by Jane A. Nickles…your blog administrator: jnickles@societyofwineeducators.org