After the eponymous river named AVA area in the north of California Sonoma County ( North Coast ). It extends from Healdsburg in the north south to Santa Rosa and southwest to Forestville and Sebastopol. The name derives from the Russian trappers who explored this river in the early 19th century when there were still Russian trade colonies on the north coast of California. Two sub-AVA areas, each with approximately 400 hectares, are Sonoma County Green Valley on the western edge and Chalk Hill on the eastern edge. It is cool, influenced by the morning mists of the nearby Pacific climate in front.
The vineyards cover a total of about 4,000 hectares of vineyards. There is a relatively cool climate due to the early morning mist from the nearby Pacific coast. These conditions are for the two dominant varieties Chardonnay and Pinot Noir almost predestined, others are of importance Cabernet Sauvignon. Gewurztraminer. Merlot. Riesling. Sauvignon Blanc and Zinfandel, Well-known wineries are among others Clos du Bois. Gallo. Iron Horse. Korbel. Marimar Estate. Ravenswood and Simi Winery,