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City of Santa Ana <br />Main Place Mall Transformation <br />Water Supply Assessment <br />Table 2: Supply and Demand Comparison- Normal Year' <br />2020 <br />2025 <br />2030 <br />2030 <br />20402 <br />Demand Totals <br />36,998 <br />39,717 <br />39,989 <br />39,978 <br />40,036 <br />Groundwater Supply <br />25,899 <br />27,802 <br />27,992 <br />27,985 <br />28,025 <br />MWD <br />10,799 <br />11,615 <br />11,697 <br />11,693 <br />11,711 <br />Recycled Water <br />300 <br />300 <br />300 <br />300 <br />300 <br />Difference <br />0 <br />0 <br />0 <br />0 <br />0 <br />Note: units are in acre-feet per year(AFY). <br />1. City of Santa Ana 2015 UWMP, Table 3-4. <br />2. Projected values per the City of Santa Ana 2015 UWMP, Table 3-4 <br />4.4.2 Single Dry -Year Reliability Comparison <br />A Single -dry year is defined as a single year of no to minimal rainfall within a period that average <br />precipitation is expected to occur. The City has documented that it is 100 percent reliable for single dry <br />year demands from 2020 through 2040 with a demand increase of 6 percent using FY 2013-14 as the single <br />dry -year. This percentage was determined by MWDOC based on historical data for all of its retail agencies <br />through its "Bump Methodology." <br />Table 3: Supply and Demand Comparison- Single Dry -Year' <br />2020 <br />2025 <br />2030 <br />2030 <br />1 20402 <br />Demand Totals <br />39,218 <br />42,100 <br />42,388 <br />42,377 <br />42,438 <br />Supply Total <br />39,218 <br />42,100 <br />42,388 <br />42,377 <br />42,438 <br />Difference <br />0 <br />0 <br />0 <br />0 <br />0 <br />Note: units are in acre-feet per year (AFY). <br />1. City of Santa Ana 2015 UWMP, Table 3-7 <br />2. Projected values per the City of Santa Ana 2015 UWMP, Table 3-7 <br />4.4.3 Multiple Dry -Year Period Reliability Comparison <br />Multiple -dry years are defined as three or more years with minimal rainfall within a period of average <br />precipitation. The City is capable of meeting all customers' demands with significant reserves held by <br />MWD, local groundwater supplies, and conservation in multiple dry years from 2020 through 2040 with a <br />demand increase of 6 percent using FY 2011-12 through FY 2013-14 as the driest years. MWDOC chose <br />the highest average demand over a three-year period for the multi -dry year demand increase. This value <br />was repeated over the three-year span as a conservative assumption where demand would increase <br />significantly in a prolonged drought and would remain constant through the years. <br />Kimley>»Horn 55 - 5 Page 117 <br />