Santa Clara County California Santa Clara County sits at the bottom of the San Francisco Bay and includes much of Silicon Valley. Many of the remaining wineries are located in the western hills and members of the Santa Cruz Mountains Winegrowers Association. www.scmwa.com Vineyards & Wineries: Bargetto Winery Cardiff Cooper Garrod Estate Vineyards Cypress Vineyards Fortino Winery Guglielmo Winery J. Lohr Vineyards & Wines Kirigin Cellars Mountain View Vintners Mountain Winery Mt. Eden Vineyards Picchetti Winery Rapazzini Savannah Chanelle Vineyards AVAs in Santa Clara County: Pacheco Pass Santa Clara Valley San Ysidro District