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Table 7-3: Zone 7 Multiple Dry Years Water Supply and Demand (AFA)
<br />Water Supply Source
<br />2006 -2012
<br />2013.2030
<br />Year 1
<br />Year 2
<br />Year 3
<br />Year 1
<br />Year 2
<br />Year 3
<br />SWP°
<br />66,280
<br />8,060
<br />69,420
<br />66,280
<br />8,060
<br />10,000
<br />69,420
<br />0
<br />SWP Carryover Supply
<br />10,000
<br />10,000
<br />0
<br />10,000
<br />STWSD Pumpbadc
<br />0
<br />8,680
<br />8,150
<br />0
<br />8,680
<br />10,000
<br />15,480
<br />0
<br />Cawelo Pumpbadc
<br />69,370
<br />Available Surplus
<br />4,800
<br />0
<br />Arroyo del Vane Watershed
<br />380
<br />290
<br />4,250
<br />380
<br />290
<br />4,290
<br />Groundwater (Main Basin)
<br />17,000
<br />33,400
<br />17,000
<br />17,000
<br />30,730
<br />17,000
<br />Byron Bethany Irrigation District
<br />2,000
<br />2,000
<br />2,000
<br />2,000
<br />2,000
<br />2,000
<br />Supply Total
<br />95,660
<br />62,430
<br />100,820
<br />95,660
<br />69,760
<br />108,190
<br />Estimated Demands
<br />57,620
<br />57,820`
<br />57,820`
<br />69,370
<br />69,370
<br />69,370
<br />Available Surplus
<br />38,040
<br />5,000
<br />43,200
<br />26,290
<br />390
<br />38,820
<br />Report
<br />Notes:
<br />a. SWP supplies calculated by DWR with DWRSIM modeling and compared to CALSIM II estimates In the 2002 SWP Delivery Reliability
<br />b. SWP Carryover Supply Is surplus Zone 7 water stored in DWR facilities in wet or normal years.
<br />c. Assumed 2010 demand from Table 19, 2005 Zone 7 Urban Water Management Plan. page 66.
<br />d. Assumed 2030 demand from Table 20, 2005 Zone 7 Urban Water Management Plan, papa 65.
<br />Table 7 -2: Zone 7 Single Driest Year Water Supply and Demand (AFA)
<br />Water Supply Source
<br />Single Driest Year
<br />2006-2012
<br />Single Driest Year
<br />2013 -2030
<br />SyyP•
<br />4,030
<br />4,030
<br />SWP Carryover Supply
<br />20,000
<br />20,000
<br />STWSD Pumpbadc
<br />8,170
<br />8,170
<br />Cawelo Pumpback
<br />10,000
<br />Arroyo del Valle Watershed
<br />20
<br />20
<br />Groundwater (Main Basin)
<br />28,200
<br />28,200
<br />BBID
<br />2,000
<br />2,000
<br />Supply Total
<br />62,420
<br />72,420
<br />Estimated Demand Totals`
<br />57,620
<br />69,370
<br />Available Surplus
<br />4,800
<br />3,050
<br />Notes:
<br />a. DWR calculated that approodrnately 5 percent of annual supplies available In Single Driest Year.
<br />b. SWP Canyovsr Supply is surplus Zone 7 water stored in DWR facilities in wet or normal years.
<br />c. Used 2010 demand from Tables 19 and 20, 2005 Zone 7 Urban Water Management Plan, paps 65.
<br />City of Pleasanton
<br />Final Water Supply Assessment
<br />Stoneridge Drive Specific Plan Amendment and Staples Ranch Project
<br />6.0 Supply Demand Comparison
<br />Zone 7 has developed a water supply portfolio capable of meeting all demands in any given year.
<br />Tables 7 -2 and 7-3 illustrate the available water supplies as hydrologic conditions change when
<br />compared to demand changes of the next 25 years.
<br />This WSA assumes that Zone 7 will adhere to the goals and policies set forth in Board Resolution
<br />No. 04 -2662 by meeting retail customer demands (purchase requests) first, followed by fulfilling
<br />those obligations needed to maintain their annual water storage portfolio. As shown in Table 7-4,
<br />the 2007 Annual Sustainable Supply of 87,500 exceeds Total Water Sales in every year. Thereby,
<br />Zone 7 could have surplus water available to use for "operational storage" after meeting retail
<br />customer demands. Furthermore, as demonstrated in Table 7-4, Zone 7 has adequate supplies
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<br />7 -2
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