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Evaluating Water Quality Parameters associated with Urbanization using BASINS 3.0

Evaluating Water Quality Parameters associated with Urbanization using BASINS 3.0. Kristi Shaw. Water Quality Standards to Monitor for Urban Development (30 TAC 216). Total Suspended Solids Total Nitrogen Total Phosphorous Chemical Oxygen Demand Biochemical Oxygen Demand (BOD).

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Evaluating Water Quality Parameters associated with Urbanization using BASINS 3.0

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  1. Evaluating Water Quality Parameters associated with Urbanization using BASINS 3.0 Kristi Shaw

  2. Water Quality Standards to Monitor for Urban Development (30 TAC 216) • Total Suspended Solids • Total Nitrogen • Total Phosphorous • Chemical Oxygen Demand • Biochemical Oxygen Demand (BOD)

  3. The BASINS Experience

  4. BASINS 3.0 Capabilities • Data extraction tools and project builders • Water quality assessment tools (TARGET and ASSESS) to address small scale characterization needs • Watershed Delineation tools • Utilities to classify DEMs, land use, and soils • SWAT and HSPF (both watershed loading and transport models) • QUAL2E (instream water quality model) • PLOAD (one dimensional model that estimates nonpoint pollution loads)

  5. Fecal Coliform Levels Exceeding Texas Regulatory Criteria in 1989 using ASSESS

  6. Delineating watersheds (subbasins)

  7. Soil Coverage (convert to grid) Needed to add From LBJ Area Cataloging Unit

  8. BASINS Models SWAT HSPF QUAL2E PLOAD

  9. SWAT (Soil Water Assessment Tool) • Physically based model developed to predict the impact of land management practices on water, sediment, and agricultural chemical yields on complex watersheds • Considers varying soils, land use, and management conditions • Assimilates point source contributions • Performs flow and water quality routing in stream reaches

  10. Classifying land use

  11. Distribution of Hydrologic Response Units

  12. SWAT View

  13. HSPF (Hydrological Simulation Program Fortran) ver 1.2 • watershed model that simulates nonpoint source runoff and pollutant loadings for a watershed • combines these with point source contributions • performs flow and water quality routing in reaches.

  14. HSPF-entire area (selecting Barton Creek Watershed)

  15. HSPF (Creating Project)

  16. Permit Compliance System ONLY FOR PENNSYLVANIA

  17. HSPF (sub-basin 1 only)

  18. HSPF-Reaches

  19. HSPF- Fatal Error

  20. HSPF- Point Sources

  21. HSPF- What it’s suppose to look like.

  22. GenScn: Viewing HSPF

  23. Qual2E

  24. PLOAD (estimates pollution loads)

  25. Event Mean Concentrations (EMCs) Source: Nonpoint Source Pollution in the Mission Basin GIS in Water Resources exercise

  26. Impervious Factor Source: PLOAD Users Manual

  27. Adding EMC and Impervious Factor Files

  28. Adding EMC…cont

  29. PLOAD Errors

  30. Let’s just look at Barton Creek subbasin

  31. PLOAD- OUTPUT

  32. GenScn

  33. GenScn (selecting multiple records of 31625- Fecal Coliform)

  34. Genscn (selecting multiple records of Nitrogen –TKN)

  35. Conclusion • Basins 3.0 is still in development phase and has programming glitches • The HSPF and SWAT model learning curve is very time consuming • Help tools are useful for BASINS, but SWAT and HSPF lack good users manual

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