Plans to restrict water use in vineyards across California's Sonoma and Mendocino counties could cost the local economy up to US$2bn a year, according to a new report. The report, commissioned by Williams Selyem winery, said up to 8,000 jobs could be lost as a result of the move by California’s State Water Resources Control Board (SWRCB), which wants to restrict wineries’ use of Russian River water for frost protection