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Cabrillo Town Center <br />WATER SUPPLY ASSESSMENT FEBRUARY 13, 2023 <br />25 <br />In addition, landscape policies have also been modified to allow drought tolerate landscape <br />throughout the City (see Appendix B). These programs have been successful in reducing water <br />demands throughout the City’s service area. <br />OCWD is also taking strides to ensure local water supplies will meet growing demands now and <br />into the future. As mentioned, OCWD manages the City’s groundwater supply and the entire OC <br />Basin utilizing the BPP approach. For Water Year 2021-22 the BPP was set at 77 percent. In the <br />City’s 2020 UWMP, OCWD anticipated being able to sustain the BPP at 85 percent stating in <br />2025. The expected completion of GWRS Final Expansion (GWRSFE) in 2023 and relatively low <br />water demands of approximately 400,000 AFY are the reasons for the higher BPP in 2025. The <br />BPP projection is based off average annual rainfall weather patterns and if the City was to <br />experience a relatively dry period, the BPP could be reduced to maintain water storage levels as <br />much as 5 percent. <br />As shown in Table 9 below, the City’s available supply including OCWD groundwater and <br />Metropolitan imported water, will meet projected demand during normal, single dry, and <br />multiple dry years. For the City’s 2020 UWMP, the normal dry year was selected as the City’s <br />2025 demand. A single dry year is defined as a single year of no to minimal rainfall within a <br />period that average precipitation is expected to occur. The City has documented that it is 100 <br />percent reliable for single dry year demands from 2025 through 2045 using FY 2017-18 and FY <br />2018-19 and the single-dry year hydrologic condition by FY 2013-14. Based on the Demand of <br />Forecast TM (CDM Smith, 2021) there is a 6 percent assumed increased above average year <br />demands in dry and multiple dry years. Multiple-dry years are defined as three or more years <br />with minimal rainfall with a period of average precipitation. The City is capable of meeting all <br />customer’s demands with significant reserves held by Metropolitan, local groundwater <br />supplies, and conservation in multiple dry years from 2025 through 2045 with a demand <br />increase of 6 percent using FY 2012-13 through FY 2015-16 as the driest years.