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ELAN PROJECT
<br />WATER SUPPLY ASSESSMENT NOVEMBER 2, 2017
<br />Table 8 Metropolitan Multiple Climate Scenario Water Supply Capability and Projected
<br />Demands Comparison from 2020-2040 (AF)
<br />Forecast Year
<br />2020
<br />2035
<br />2Q30
<br />2035
<br />2040
<br />Normal Year
<br />Capability of Current Supply
<br />3,448,000
<br />3,550,000
<br />3,658,000
<br />3,788,000
<br />3,824,000
<br />Total Demands
<br />1,860,000
<br />1,918,000
<br />1,959,000
<br />2,008,000
<br />2,047,000
<br />Supply Programs Under
<br />Development
<br />63,000
<br />100,000
<br />386,000
<br />428,000
<br />468,000
<br />Total Potential Surplus
<br />1,651,000
<br />1,732,000
<br />2,085,000
<br />2,208,000
<br />2,245,000
<br />Single -:Dry Year
<br />Capability of Current Supply
<br />2,584,000
<br />2,6 66,000
<br />2,775,000
<br />2,905,000
<br />2,941,000
<br />Total Demands
<br />2,005,000
<br />2,066,000
<br />2,108,000
<br />2,160,000
<br />2,201,000
<br />Supply Programs Under
<br />Development
<br />63,000
<br />100,000
<br />316,000
<br />358,000
<br />398,000
<br />Total Potential Surplus
<br />642,000
<br />720,000
<br />983,000
<br />1,703,000
<br />1,138,000
<br />Multiple
<br />-Dry Year
<br />Capability of Current Supply
<br />2,103,000
<br />2,154,000
<br />2,190,000
<br />2,242,000
<br />2,260,000
<br />Total Demands
<br />2,001,000
<br />2,118,000
<br />2,171,000
<br />2,216,000
<br />2,258,000
<br />Supply Programs Under
<br />Development
<br />43,000
<br />80,000
<br />204,000
<br />245,000
<br />286,000
<br />Total Potential Surplus
<br />145,000
<br />116,000
<br />223,000
<br />271,000
<br />288,000
<br />Source: 2015 Metropolitan UWMP
<br />The findings of the 2015 Metropolitan UWMP highlight that Metropolitan has supply capabilities
<br />that would be sufficient to meet expected demands from 2020 through 2040 under the normal,
<br />single dry -year and multiple dry -year conditions. Metropolitan also has proposed programs in
<br />place to ensure against water shortages in the future. These programs include projects along
<br />the California Aqueduct and the Colorado River Aqueduct in addition to demand reduction
<br />projects. In all climate scenarios, Metropolitan estimates potential surpluses in water supply
<br />through 2040.
<br />The Metropolitan 2015 UWMP was made public in early 2016 and shared with Metropolitan's
<br />member agencies. Once these findings were finalized, the Metropolitan member agencies
<br />could conclude their own 2015 UWMP findings. The City of Santa Ana published their 2015
<br />UWMP in April 2016 after determining Metropolitan would be able to meet the City's imported
<br />water demands through 2040. The City of Santa Ana and OCWD local water supply reliability
<br />is summarized below.
<br />4.2 OCWD AND CITY OF SANTA ANA LOCAL WATER SUPPLY RELIABILITY
<br />Like Metropolitan, the City of Santa Ana is also required to assess the reliability of their water
<br />service to its customers under normal, single -dry and multiple -dry water years. As mentioned
<br />the City depends on a combination of imported water from Metropolitan and local groundwater
<br />supplies from OCWD to meet its water demands. The City has taken numerous steps to ensure
<br />it has adequate supplies to provide for growing demands.
<br />FUSCOE ENGINEERING, INC. 21
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