Northern Sonoma Wines

The Northern Sonoma AVA covers a wide area, from the Mendocino border in the north, the Mayacamas Mountains in the east, down to Santa Rosa in the middle of Sonoma County. Its vineyards are separated from the Pacific Ocean by the Sonoma Coast AVA. The Russian River, which starts in Mendocino, flows through the Northern Sonoma AVA providing much needed groundwater for vineyards. Within Northern Sonoma are several smaller AVAs including Alexander Valley, Knights Valley, Rockpile, Chalk Hill, Russian River Valley (plus Green Valley of Russian River Valley) and Dry Creek Valley.