Chalk Hill

The Chalk Hill AVA is located in Sonoma County, California near the town of Windsor and is a sub-region of the Russian River Valley AVA. Chalk Hill became an AVA in 1988, and its name derives from the region's distinctive volcanic soil of chalky ash. The volcanic soil has given Chalk Hill a distinctive flavor to its white wine varietals like Chardonnay and Sauvignon Blanc. The Chalk Hill AVA consists of 1,650 acres, most of which are on the slopes of the Mayacamas Mountains between 200 and 1,300 feet. The climate of the region is considered warm for the Russian River Valley, which combined with the relatively infertile soil, causes the grapes to struggle slightly in their development. This combination of infertile soil and a moderate climate leads to a late harvest and complex fruit flavors. Chalk Hill is known best for producing Chardonnay, Sauvignon Blanc, Cabernet Sauvignon, Cabernet Franc and Merlot.