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110 Part i california Water <br />The value of coordination is spurring the expansion of new forms of formal <br />and informal cooperation. Joint powers authorities are becoming a popular <br />mechanism to allow agencies to conduct joint investments and operations in <br />areas such as watershed and groundwater basin management.41 The past 15 years <br />also have seen the rise of groups engaged in groundwater management plan- <br />ning and regional water planning, encouraged in part by the availability of <br />state bond funds for these activities (Chapter 6).42 In addition, state laws (Senate <br />Bill [SB] 610 and SB 221, passed in 2001) now require local land use authorities <br />to coordinate with water utilities before approving large urban development <br />projects (more than 500 units) to ensure that long-term supplies will be available <br />(Hanak 2005b, 2010). As part of the 2007 flood legislation, local governments in <br />the Central Valley will soon be required to incorporate flood risk considerations <br />in their general plans and establish community protection goals (AB 162). This <br />progress notwithstanding, more systematic efforts will be needed to coordinate <br />and integrate water management activities at the basin and watershed scale to <br />effectively address growing water supply, flood, water quality, and ecosystem <br />management challenges (Chapters 5, 6, 8). <br />State and Federal Roles in a Decentralized System <br />Although day-to-day management of California water is highly decentralized, <br />federal and state authorities from all three branches of government set the <br />overall policy framework and regulatory context for local entities. Congress <br />and the state legislature are the ultimate policymakers, but a range of federal <br />and state agencies have considerable regulatory authority over water policy, <br />planning, and operations. The judicial branch’s role in resolving legal disputes <br />makes it a critical arbiter of many controversial issues. <br />Legislatures <br />Congress and the California legislature have been responsible for numerous <br />large and small water policy decisions and directives. As described in Chapter 1, <br />the federal Flood Control Act of 1928 brought major changes to flood manage- <br />ment policy, and state legislative and congressional approval of the Central Valley <br />Project in the 1930s and the State Water Project in 1959 set the stage for the <br />41. Examples include the Santa Ana Watershed Project Authority (watershed management, including the operation of <br />a brine line) (Chapter 6), the Sacramento Regional Water Authority (groundwater management within the Sacramento <br />area) (www.rwah2o.org/rwa/), and the Orange County’s Groundwater Replenishment System, noted above. <br />42. Hanak (2003) provides information on multiagency groundwater management planning entities formed under <br />Assembly Bill (AB) 3030, adopted in 1992.