Sonoma Coast AVA

Viticulture on this coast predates the AVA by well over a century. According to the petition summarized in TTB's 2011 Fort Ross-Seaview rule, Fort Ross was established in 1812 by Russian fur trappers on a bluff overlooking the Pacific Ocean, and viticulture in the area dates to 1817, when Captain Leontii Andreianovich Hagemeister planted Peruvian grape cuttings at Fort Ross. The same rule records that Michael Bohan planted two acres of grapes three miles east of Fort Ross in 1973, planted another 15 acres in 1974, and in 1976 started selling his grape harvests to wineries in Sonoma and Santa Cruz Counties; in 1980 David Hirsch planted a vineyard between the 1,300- and 1,600-foot elevations in the Fort Ross-Seaview area. The appellation itself came from a petition by Sara Schorske, a wine industry consultant residing in Santa Rosa, and T.D. ATF-253 (1987) records that Brice C. Jones, President of Sonoma-Cutrer Vineyards, endorsed it. Stephen Brook, writing in Decanter in 2001, attributed the AVA's shape to lobbying by Brice Cutrer Jones, who made sure that all his vineyards were within the new appellation.

• 1812: Russian fur trappers established Fort Ross, which served as Russia's southernmost outpost in the Pacific Northwest until it was abandoned in 1841 (TTB, 2011)
• 1817: Captain Leontii Andreianovich Hagemeister planted Peruvian grape cuttings at Fort Ross, according to the Fort Ross-Seaview petition (TTB, 2011)
• 1973 to 1980: Michael Bohan planted two acres east of Fort Ross in 1973 and another 15 acres in 1974; David Hirsch planted his vineyard in 1980 (TTB, 2011)
• 1987 onward: T.D. ATF-253 established the Sonoma Coast AVA, effective July 13, 1987; Fort Ross-Seaview followed (effective January 13, 2012), then West Sonoma Coast (effective June 22, 2022)

27 CFR 9.116 draws the AVA's western edge along the shoreline of the Pacific Ocean from the Sonoma County-Mendocino County line south to the Sonoma County-Marin County line, then along that county line to San Pablo Bay and along the bay's shoreline east to the Sonoma County-Napa County line. From there the boundary runs north to the peak of Arrowhead Mountain and then inland, past Sonoma Mountain, Taylor Mountain, Fitch Mountain and the city of Healdsburg, before returning northwest to the Mendocino County line. T.D. ATF-253 (1987) says the area includes only the portion of the county under very strong marine climate influence, manifested by persistent fog and the "Coastal Cool" classification, and that the inland limit of marine fog intrusion mapped in the Sonoma County General Plan corresponds approximately with the boundary. On the far coast, TTB's 2022 West Sonoma Coast rule describes steep, rugged mountains and ridgelines of the Coastal Ranges whose summits can exceed 1,000 feet, with vineyard areas above the fog layer and lower, sheltered sites where viticulture takes place within the fog line. Much of that western area is underlain with sedimentary rocks of the Franciscan Complex, and the same rule notes that soils derived from the Franciscan Complex are typically thin and have a high sand content, which promotes good drainage in vineyards.

• Sonoma County Vintners (accessed 2026) describes the Sonoma Coast AVA as having more than twice the annual rainfall of its inland neighbors, and says it is warm enough to ripen wine grapes because most vineyards are above the fog line
• West Sonoma Coast elevations range from 400 to 1,800 feet, according to Sonoma County Vintners (accessed 2026)
• Fort Ross-Seaview lies mainly between the 920- and 1,800-foot elevation lines and receives less fog and more sun during the growing season than the surrounding lower areas; its western boundary is between 0.5 and 2.5 miles from the Pacific coastline (TTB, 2011)
• TTB's 2011 rule notes that the San Andreas Rift Zone runs generally parallel to and west of the western portion of the Fort Ross-Seaview boundary line and east of the Pacific coast
• The Sonoma County portion of the Petaluma Gap AVA (effective January 8, 2018) lies within the Sonoma Coast AVA, while its Marin County portion remains outside (TTB, 2017)

Sonoma County Vintners (accessed 2026) lists Chardonnay and Pinot Noir as the Sonoma Coast AVA's key varieties, and the West Sonoma Coast petition, as summarized in TTB's 2022 rule, states that the climate of that coastal area is suitable for growing cooler climate varietals such as Pinot Noir and Chardonnay. On the far coast, Sonoma County Vintners writes that bright acidity, moderate alcohol, and pure flavors are the qualities often associated with West Sonoma Coast wines. Stephen Brook, writing in Decanter in 2022, notes many West Sonoma Coast Chardonnays and Pinot Noirs with alcohol levels below 12.5%, while DuMol and Freeman release wines with around 14%. Brook also quotes Ted Lemon of Littorai describing West Sonoma Coast wines as having ‘more backbone and angularity, and they’re less voluptuous and fruit-driven than those from Russian River Valley’. Syrah is a minor presence: Brook's 2001 Decanter report mentions a few hectares of Syrah planted by Ehren Jordan and a little Syrah among Jess Jackson's plantings at the Annapolis vineyard.

• Chardonnay and Pinot Noir: listed by Sonoma County Vintners (accessed 2026) as the AVA's key varieties
• Alcohol: Brook (Decanter, 2022) cites many West Sonoma Coast Chardonnays and Pinot Noirs below 12.5%, with DuMol and Freeman releasing wines at around 14%
• Syrah: a few hectares planted by Ehren Jordan and a little at Jess Jackson's Annapolis vineyard, per Brook (Decanter, 2001)
• West Sonoma Coast style: Sonoma County Vintners (accessed 2026) associates bright acidity, moderate alcohol, and pure flavors with its wines

The TTB rules and Decanter's reporting name several growers and producers on the coastal ridges. David Hirsch, of Hirsch Vineyards, was a co-petitioner for the Fort Ross-Seaview AVA and has been growing wine grapes at a vineyard at an elevation of 1,500 feet there since 1980 (TTB, 2011). Brook (Decanter, 2001) described Walt and Joan Flowers' 9ha Camp Meeting Ridge, planted in 1991 at between 1,100 and 1,400 feet, and wrote that they were the first vineyard owners on those highlands to vinify their own crop rather than sell it. TTB's 2022 rule identifies Lester Schwartz as owner of Fort Ross Vineyards, within the Fort Ross-Seaview AVA. Brook (Decanter, 2022) names the Jackson family, Steve Kistler, Helen Turley, Chuck Wagner of Caymus, and Phelps, as well as David Hirsch and brothers Andy and Nick Peay, among the 29 wineries and growers petitioning for the West Sonoma Coast AVA.

• Hirsch Vineyards: David Hirsch planted a vineyard between the 1,300- and 1,600-foot elevations in the Fort Ross-Seaview area in 1980 and co-petitioned for that AVA (TTB, 2011)
• Flowers: Walt and Joan Flowers' 9ha Camp Meeting Ridge, planted in 1991 at between 1,100 and 1,400 feet (Brook, Decanter, 2001)
• Littorai: Ted Lemon, once the winemaker at Domaine Roulot in Meursault (Brook, Decanter, 2022)
• Sonoma-Cutrer: its President, Brice C. Jones, endorsed the establishment of the Sonoma Coast AVA (T.D. ATF-253, 1987)
• Fort Ross Vineyards: owned by Lester Schwartz, within the Fort Ross-Seaview AVA (TTB, 2022)

Under 27 CFR 4.25, a wine labeled with a viticultural area appellation must have not less than 85 percent of the wine derived from grapes grown within the boundaries of the viticultural area. The Sonoma Coast AVA lies within the North Coast AVA, and TTB's 2022 West Sonoma Coast rule notes that the Sonoma Coast AVA entirely overlaps the West Sonoma Coast AVA as well as the Green Valley of Russian River Valley AVA and most of the Russian River Valley AVA. Fort Ross-Seaview, established by T.D. TTB-98 as a 27,500-acre viticultural area, took effect on January 13, 2012. West Sonoma Coast, established by T.D. TTB-179 as an approximately 141,846-acre viticultural area, took effect on June 22, 2022; it contains Fort Ross-Seaview, and its petition counted approximately 47 commercial vineyards covering approximately 1,028 acres. The Petaluma Gap AVA, effective January 8, 2018, lies partially within the Sonoma Coast AVA; TTB allowed the partial overlap to remain primarily because the name "Sonoma Coast" is associated only with the coastal region of Sonoma County and does not extend into Marin County.

• Labeling: not less than 85 percent of the wine derived from grapes grown within the viticultural area's boundaries (27 CFR 4.25)
• Fort Ross-Seaview: 27,500 acres; its petition counted 18 commercial vineyards on 506 acres in spring 2003 (TTB, 2011), and Decanter (2023) reports 225ha planted
• West Sonoma Coast: approximately 141,846 acres with approximately 47 commercial vineyards on approximately 1,028 acres (TTB, 2022); Brook (Decanter, 2022) put it at 575km2 against 2,000km2 for the Sonoma Coast AVA
• Petaluma Gap: approximately 202,476 acres in Sonoma and Marin Counties; its Sonoma County portion is within the Sonoma Coast AVA and its Marin County portion outside (TTB, 2017)

T.D. ATF-253 (1987) notes that "Sonoma Coast" is the name of a State beach located north of Bodega Bay. TTB's 2011 rule records that the site of Fort Ross has been called the Fort Ross State Historic Park since 1906 and that a reconstructed fort is now open to the public; Seaview, a small, unincorporated community along the Pacific Coast Highway (State Route 1), lies nearby and to the north of the park. In Stephen Brook's 2001 Decanter account, reaching the highland vineyards meant twisting dirt roads, with a 20-minute drive or more from one to another, and wines from sought-after producers buying much of the best fruit were only available through fully subscribed mailing lists.

• Sonoma Coast State beach, north of Bodega Bay, shares its name with the AVA (T.D. ATF-253, 1987)
• Fort Ross State Historic Park: the fort site has carried that name since 1906, and a reconstructed fort is open to the public (TTB, 2011)
• Jenner, at the mouth of the Russian River, is the southern end of what the Northern Addition petition described as the natural environment of the "Fort Ross Region" (TTB, 2011)
• In 2001 Brook reported only two functioning wineries in the highlands, Sea Ridge and Flowers (Decanter)

Primary sources (TTB regulations on ecfr.gov, Federal Register final rules on govinfo.gov, and Sonoma County Vintners at sonomawine.com): https://www.ecfr.gov/current/title-27/chapter-I/subchapter-A/part-9/subpart-C/section-9.116, https://www.govinfo.gov/content/pkg/FR-1987-06-11/pdf/FR-1987-06-11.pdf, https://www.govinfo.gov/content/pkg/FR-2011-12-14/html/2011-32016.htm, https://www.govinfo.gov/content/pkg/FR-2022-05-23/html/2022-10590.htm, https://www.govinfo.gov/content/pkg/FR-2017-12-07/html/2017-26410.htm, https://www.ecfr.gov/current/title-27/chapter-I/subchapter-A/part-4/subpart-C/section-4.25, https://sonomawine.com/appellations/. Secondary sources: https://www.decanter.com/wine/wine-regions/california-wine-region/sonoma/sonoma-county-avas-overview-and-10-wines-to-try-510427/, https://www.decanter.com/wine/wine-regions/california-wine-region/cool-breeze-249517/, https://www.decanter.com/premium/exploring-west-sonoma-coast-plus-top-pinots-and-chardonnays-to-seek-out-476553/. Last verified 2026-09-28