Guidebook for Implementation of Senate Bill 610 and Senate Bill 221 of 2001 to assist water suppliers, cities, and counties in integrating water and land use planning

California Department of Water Resources


The California Department of Water Resources ( provides assistance to water agencies in implementing the Urban Water Management Planning Act, which is one of the statutes amended by SB 610. The Urban Water Management Plan and Urban Water Shortage Contingency Analysis, are also referenced in SB 221. As part of its assistance responsibility, DWR has prepared this guidance to assist water suppliers to prepare the water assessments and the written verification of water supply availability required by SB 610 and SB 221 respectively.