Flow Loss in Jacobs Well Hays County, TX

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Flow Loss in Jacobs WellHays County, TX

• Elspeth Steinhauer

http//www.visitwimberley.com/articles-events/jaco
bsWellTests.shtml
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Jacobs Well

• Located in Wimberley, TX
• Extends at least 2,900 ft
• Fractured limestone bedrock
• Stopped flowing July 2000
• Not sure of recharge source

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Possible Reasons for drop in flow

• Population increase from 65,614 in 1990 to
  97,589 in 2000 (nearly 50 increase)
• Drought (http//synergyx.tacc.utexas.edu/Spotlight
  /Texas_drought/drought_playa.html)

July 5, 1999
January 13, 2000
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Hays County, TX
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Map of 1992 Land Use
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Potentiometric Surface Maps
2000
1986
2006
1996
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(No Transcript)
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Implications

• Population increase from 97,589 in 2000 to124,432
  in 2005, Cypress Creek continues to flow
• Flow from Cypress Creek appears to be linked to
  rainfall
• Conservation important, but maybe not the key
  factor here

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Future Research

• Data from USGS gage of Jacobs Well flow soon
  available
• Explore possibility of other recharge sources
  (Blanco River?)
• Use time series in ArcGIS to link rainfall data
  to discharge data spatially and temporally

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Questions