55B - RESO - CIVIC CENTER WATER SUPPLY

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CITY OF SANTA ANA CIVIC CENTER FACILITIES STRATEGIC PLAN WATER SUPPLY ASSESSMENT The City currently maintains seven imported water connections to the Metropolitan System. The following is a summary of these seven connections and their normal and design capacities. Table 7: Metropolitan Wetter District Connections MWD Connection Nante of Connection Normal Operating Ca aci (MGD) Design Capacity (MGD) SA -1 Bristol 5.17 6.46 SA -2 First 5.17 9.69 SA -3 McFadden 5.17 6.46 SA4 Warner 4.85 6.46 SA -5 Alton 4.85 12.93 SA -6 Santa Clara 7.76 12,93 SA -7 Red Hill 4.85 32,31 Metropolitan's principal sources of water are the Colorado River via the Colorado River Aqueduct (CRA) and the Lake Oroville watershed in Northern California through the State Water Project (SWP). The water obtained from these sources is treated at the Robert B. Diemer Filtration Plant located north of Yorba Linda. Typically, the Diemer Filtration Plant receives a blend of Colorado River water from Lake Matthews through the Metropolitan Lower Feeder and SWP water through the Yorba Linda Feeder. Section 3.2.1 (Colorado River Supplies) of the UWMP summarizes the Colorado River supplies, Metropolitan's basic entitlement, the Colorado River Basin Water Supply and Demand Study, and the future actions that must be taken to implement solutions and help resolve the imbalance between water supply and demand in areas that use Colorado River water. Section 3.2.2 (State Water Project Supplies) of the UWMP summarizes the State Water Project supplies, issues with the Sacramento -San Joaquin River Delta, ongoing regulatory restrictions, Metropolitan's Delta Action Plan, summary of SWP water deliveries, and the Delta Risk Management Strategy evaluating alternatives to reduce the risk to the Delta. For additional information, it is included within Metropolitan's 2015 Urban Water Management Plan. Groundwater Historically, local groundwater has been the cheapest and most reliable source of supply for the City. The City draws groundwater from the Orange County Groundwater Basin (OC Basin). This source of water meets approximately 71 percent of the City's total annual demand. Section 3.3.1 of the UWMP provides a summary of the basin characteristics. Orange County Water District (OCWD) was formed in 1933 by a special legislative act of the California State Legislature to protect and manage the County's vast, natural, groundwater supply using the best available technology and defend its water rights to the OC Basin. This legislation is found in the State of California Statutes, Water — Uncodified Acts, Act 5683, as amended, 5961T'1T1'