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Evaluation of Groundwater Supply Alternatives Within Bernal Subbasin
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Evaluation of Groundwater Supply Alternatives Within Bernal Subbasin
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4/14/2026 10:07:54 AM
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CITY CLERK
CITY CLERK - TYPE
AGENDA REPORT
DOCUMENT DATE
4/21/2026
DESTRUCT DATE
15Y
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Page 8 <br />Scenarios <br />Four different scenarios of pumping well combinations were evaluated: <br />x Tennis, Hansen, and Del Prado <br />x Tennis and Hansen <br />x Tennis and Del Prado <br />x Hansen and Del Prado <br />The mutual well interference drawdown at each of the three new test well sites from pumping at each of <br />the other new test well sites is summarized below in Table 8. For each combination of pumping wells, the <br />cumulative or total well interference drawdown from pumping of the other one or two wells is provided <br />in Table 8. <br />Table 8. Summary of Test Well Site Production Well Interference Estimates <br />Pumping <br />Well <br />ϯϬĂLJƐŽŶƚŝŶƵŽƵƐWƵŵƉŝŶŐ ϵϬĂLJƐŽŶƚŝŶƵŽƵƐWƵŵƉŝŶŐ <br />dĞŶŶŝƐ <br />(ft) <br />,ĂŶƐĞŶ <br />(ft) <br />Ğů <br />Prado <br />;ĨƚͿ <br />dĞŶŶŝƐ;ĨƚͿ ,ĂŶƐĞŶ <br />(ft) <br />ĞůWƌĂĚŽ <br />;ĨƚͿ <br />Tennis <br />Hansen <br />Del Prado <br />NA 13 11 NA 15 13 <br />11 NA 9 13 NA 11 <br />3 3 NA 4 4 NA <br />Cumulative 14 16 20 17 19 24 <br />Tennis <br />Hansen <br />NA 13 - NA 15 - <br />11 NA - 13 NA - <br />Cumulative 11 13 - 13 15 - <br />Tennis <br />Del Prado <br />NA - 11 NA - 13 <br />3 - NA 4 - NA <br />Cumulative 3 - 11 4 - 13 <br />Hansen <br />Del Prado <br />- NA 9 - NA 11 <br />- 3 NA - 4 NA <br />Cumulative - 3 9 - 4 11 <br />The cumulative well interference drawdowns ranged from 14 to 20 feet when all three test wells are <br />pumping for 30 days and 17 to 24 feet when all three test wells are pumping for 90 days. The cumulative <br />well interference drawdowns ranged from 3 to 13 feet, with two wells pumping over 30 days and 4 and <br />15 feet with two wells pumping over 90 days.
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