Six Sonoma references
- Russian River Valley: Pacific fog and variable inland exposure; Pinot Noir and Chardonnay are principal references, with old-vine Zinfandel also present.
- Sonoma Coast: A large coastal AVA with many local settings; it is not interchangeable with West Sonoma Coast.
- Dry Creek Valley: An inland valley and surrounding benchlands; Zinfandel is a heritage anchor, alongside Cabernet Sauvignon and other grapes.
- Alexander Valley: Warm inland Sonoma along the Russian River; particularly associated with Cabernet Sauvignon.
- Sonoma Valley: Between Sonoma Mountain and the Mayacamas; inland shelter and southern bay influence vary by site. Cabernet Sauvignon and Chardonnay help anchor its range.
- Knights Valley: In northeastern Sonoma County beside Mount St. Helena, Knights Valley is an inland Cabernet Sauvignon reference. Compare its structured reds with the Pinot Noir and Chardonnay of Sonoma’s more ocean-exposed districts.