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T HE W ARNER P ROJECT
<br />W ATER S UPPLY A SSESSMENT A UGUST 21, 2020
<br />F USCOE E NGINEERING , I NC. 23
<br />• Each project and program to achieve the 75 percent BPP goal will be reviewed
<br />individually and assessed for their economic viability.
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<br />The BPP goals mentioned above coincide with other management strategies as shown in
<br />OCWD’s Long Term Facilities Plan (LTFP), the 2015 Groundwater Management Plan and the
<br />2020 Water Master Plan Report. These documents highlight OCWD’s plans to ensure
<br />groundwater supply will be available into the future to support growing demands of its service
<br />area.
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<br />As shown in Table 9 below, the City’s available supply, including groundwater and Metropolitan
<br />imported water, will meet projected demand during normal, single dry and multiple dry years.
<br />For the City’s 2015 UWMP, the normal dry year was selected as the City’s 2015 demand. A
<br />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% reliable for single
<br />dry year demands from 2020 through 2040 with a demand increase of 6% using FY 2013-14
<br />as the single dry-year. Multiple-dry years are defined as three or more years with minimal
<br />rainfall within a period of average precipitation. The City is capable of meeting all customers’
<br />demands with significant reserves held by Metropolitan, local groundwater supplies, and
<br />conservation in multiple dry years from 2020 through 2040 with a demand increase of 6%
<br />using FY 2011-12 through FY 2013-14 as the driest years.
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<br />Table 9 City of Santa Ana Multiple Climate Scenario Water Supply and Demand Comparison
<br />from 2020-2040 (AF)
<br />Forecast Year 2020 2025 2030 2035 2040
<br />Normal Year
<br />Supply totals 36,998 39,717 39,989 39,978 40,036
<br />Demand totals 36,998 39,717 39,989 39,978 40,036
<br />Single -Dry Year
<br />Supply totals 39,218 42,100 42,388 42,377 42,438
<br />Demand totals 39,218 42,100 42,388 42,377 42,438
<br />Multiple-Dry Year
<br />First year
<br />Supply totals 39,218 42,100 42,388 42,377 42,438
<br />Demand totals 39,218 42,100 42,388 42,377 42,438
<br />Second year
<br />Supply totals 39,218 42,100 42,388 42,377 42,438
<br />Demand totals 39,218 42,100 42,388 42,377 42,438
<br />Third year
<br />Supply totals 39,218 42,100 42,388 42,377 42,438
<br />Demand totals 39,218 42,100 42,388 42,377 42,438
<br />Source: 2015 City of Santa Ana UWMP
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