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<br />MWSI Project <br />Phase II Conjunctive Use Summary Report - DRAFT <br /> <br />August 22, 1995 <br /> <br />Table 6: Recharge Rate vs. Surface Water Capture <br /> <br />NO NET AQUIFER DEPLETION <br />RECHARGE SURFACE WATER <br />RATE CAPTURE (Acre-Feet) <br />33% 41,000 <br />50% 51,500 <br />67% 58,100 <br />84% 60,000 <br /> <br />300 YEAR AQUIFER LIFE <br />RECHARGE SURFACE WATER <br />RATE CAPTURE (Acre-Feet) <br />33% 62,500 <br />50% 65,500 : <br />67% 67,400 <br />84% 69,000 <br /> <br />A graph of Table 6 is presented as Figure 7. This figure shows that a recharge rate <br />increasing from 33% to 67% for no aquifer depletion shows a substantial increase in surface <br />water capture. For a 300 year aquifer life, the same is true, but the gains are very limited, This <br />information indicates that recharge rates up to about 67 percent lead to considerable gains in <br />surface water capture. For purposes of this analysis, a recharge rate of 50 percent was selected <br />for further study as a conservative assumption, since the ability to recharge at higher rates is <br />largely untested. <br /> <br />Effect of Borrow Rate <br /> <br />The model was then run to evaluate the effect of the borrow rate upon surface water <br />capture. The model was run for borrow rates of 80,000, 100,000, 120,000, and 140,000 acre- <br />feet, and for conjunctive use demands ranging from 50,000 to 130,000 acre-feet. The results are <br />presented in Table 7. <br /> <br />55 <br />