Water Quality Assessment Cypress Creek

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Water Quality Assessment Cypress Creek
Jason Pinchback River System Institute Texas
State University

• Adrian L. Vogl
• Aquatic Resources
• Texas State University

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Outline

• Long-term trends 1973-2007
• Cypress Creek at RR-12
• Short-term trends 2003-2007
• 4 sites on Cypress Creek
• Jacobs Well, RR-12, Blue Hole, Blanco River
• Conclusions
• Decision Support System

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Long-term trends

• Overall water quality still very high

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Long-term patternsFecal coliform and Streamflow
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Short-term Trends2003-2007
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Short-term trends

• E coli, Nitrogen, and Total Suspended Solids
  correlate with flow peaks
• Also seeing some peaks at low flows

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Short-term trends

• Total suspended solids increased since 2000

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Upstream to Downstream WQ

• Upstream to downstream trends
• pH ?
• SC ?
• TSS ?

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E. Coli in Cypress Creek

• E. coli increases downstream, peaks at Blue Hole
  site

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Conclusions

• Need to have continued monitoring
• Multiple sites useful for
• Determining upstream to downstream trends
• Identifying problem areas for NPS
• Observe long-term trends in WQ

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Decision Support System(DSS)
Database management system
Topography Hydrology Water quality Land Use/Land
Cover Economic Indicators
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DSS Purposes

• Better understand cause-and-effect relationships
  in the watershed
• Objectively compare the effects of possible land
  management practices
• Aid in reaching agreement regarding specific
  local areas in need of increased protection and
  the management strategies to be pursued
• Assist ongoing efforts in public outreach and
  education concerning the watershed management and
  water quality issues