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Overview of Water Quality in Copano Bay Watershed

Overview of Water Quality in Copano Bay Watershed. Kevin Wagner, PhD Texas Water Resources Institute. Set Goals and Water Quality Standards (WQS). Conduct Monitoring. Meeting WQS?. 303(d). No. Yes. Apply Antidegradation.

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Overview of Water Quality in Copano Bay Watershed

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  1. Overview of Water Quality in Copano Bay Watershed Kevin Wagner, PhD Texas Water Resources Institute

  2. Set Goals and Water Quality Standards (WQS) Conduct Monitoring Meeting WQS? 303(d) No Yes Apply Antidegradation Develop Strategies and Control (TMDL, WPP, Evaluate Standards) Implement Strategies Overview of Water Quality Management

  3. Water Body Uses Protected in Texas • Recreation • Domestic Water Supply • Aquatic Life • Fish Consumption • General Use • Oyster Harvesting

  4. Water Quality Assessment Results • Mission River Tidal • Aquatic Life Use = No concern / fully supporting • General Use = No concern / fully supporting • Recreation Use = Not supporting (bacteria levels exceed state standards) • Mission River above Tidal • Aquatic Life, Recreation & General Use = No concern / fully supporting • Aransas River Tidal • Aquatic Life Use = No concern / fully supporting • General Use = Currently supporting but nutrient concern (PO4) • Recreation Use = Not supporting (bacteria levels exceed state standards) • Aransas River above Tidal • Aquatic Life Use = Currently supporting but dissolved oxygen concern • General Use = Currently supporting but nutrient concern (PO4, NO3, TP) • Recreation Use = No concern / fully supporting

  5. Water Quality Assessment Results, continued • Aransas Creek • Aquatic Life Use = Currently supporting, but dissolved oxygen concern • Recreation Use = Not supporting (bacteria levels exceed state standards) • Copano Bay • Aquatic Life Use = No concern / fully supporting • General Use = No concern / fully supporting • Recreation Use = Fully supporting • Oyster Harvest = Fully supporting • Mission Bay/Aransas River Arm, Port Bay & Eastern shoreline • Oyster Harvest = Not supporting (bacteria levels exceed state standards)

  6. Monitoring Procedures • Surface Water Quality Monitoring Procedures to be followed if data is used for assessment • http://www.tceq.texas.gov/publications/rg/rg-415/index.html • Chapter 2 – General Monitoring Guidelines • Chapter 4 – Collecting and Analyzing Bacteriological Samples • Chapter 5 – Collecting Water Samples • Chapter 9 – Required Equipment and Spare Parts • Chapter 10 – Quality Assurance and Quality Control

  7. Map of Monitoring Sites

  8. Station 12943 - Mission River at FM 2678 (Tidal Stream)

  9. Station 12947/8 - Aransas River Tidal at US 77 (Tidal Stream)

  10. Station 12945 - Copano Bay at FM 136

  11. Questions? Kevin Wagner, PhD Texas Water Resources Institute klwagner@ag.tamu.edu 979-845-2649 Allen Berthold Texas Water Resources Institute taberthold@ag.tamu.edu 361-318-8780

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