Yountville,CA -- Although a wet winter has reduced the immediacy of saving water, for the long haul California growers can look forward to increasing restrictions on water usage and periodic shortages. To help growers deal with these issues, the Napa Valley Grapegrowers focused on irrigation at the latest of its sustainability workshops held June 29 at the new Community Center in Yountville. Steve Moulds of Moulds Family Vineyard, a director of NVG, set the stage for the seminar.