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Water Quality Analysis Simulation Program (WASP)

Water Quality Analysis Simulation Program (WASP). Tim Wool US EPA - Region 4. WASP Overview. History In the Beginning In the Middle And Now……. What is WASP?. Water Quality Model Conventional Pollutants Organic Chemicals Mercury . WASP Structure. WASP Transport Bookkeeping. EUTRO

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Water Quality Analysis Simulation Program (WASP)

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  1. Water Quality Analysis Simulation Program (WASP) Tim Wool US EPA - Region 4

  2. WASP Overview • History • In the Beginning • In the Middle • And Now……

  3. What is WASP? • Water Quality Model • Conventional Pollutants • Organic Chemicals • Mercury

  4. WASP Structure WASP Transport Bookkeeping EUTRO or TOXI = + Kinetics

  5. Basic WASP System • Model DLL’s • EUTRO.DLL -- Eutrophication Model • TOXI.DLL -- Organic Chemical Model • MERCURY.DLL – Specialized version of TOXI to handle Mercury

  6. WASP Modeling Framework Model Preprocessor/Data Server Model Input File (Binary) WASP Input Messages Models Hydrodynamic Interface Binary Model Output Stored Data BMD EUTRO Hydro TOXI Exported Model Results Mercury MOVEM Graphical Post Processor

  7. Generalized Model Framework • Box Model • 1, 2, or 3 Dimensions

  8. WASP Linkages Loading Models SWMM HSPF LSPC NPSM PRZM Bioaccumulation FGETS FCM-2 WASP Hydrodynamic Models EFDC DYNHYD RIVMOD EPD-RIV1 SWMM External Spreadsheets ASCII Files Windows Clipboard

  9. WASP is a Variable Complexity Modeling System • When building a water body model, adjust complexity to match the problem. • More Complex Aquatic Systems • More Complex Chemical or Interaction • More Complex Management Questions

  10. Components of a Complex Water Body Modeling Framework • Watershed loading models • Hydrodynamic and transport models • Contaminant fate models • Food web bioaccumulation models

  11. Processes that Control Complexity • Network Spatial Variability • Time Variability • Transport Patterns • Loading Patterns • Chemical Interactions

  12. WASP Transport Scheme • Six Different Flow Fields • Surface Water • Porewater • 3 Solids Transport Fields • Evaporation/Precipitation

  13. WASP Transport Scheme • Flows in WASP can be • Specified in the input dataset • Read from a hydrodynamic interface file created by another model or program

  14. 1 2 3 4 5 6 Simple Flow Through River 0 0

  15. Hydrodynamic Linkage • Complex Systems • Estuaries • Stratified System • Stormwater Modeling

  16. Hydrodynamic • Prediction of ….. • Travel Time • Water Depth • Water Velocity • Temperature • Salinity

  17. Little River Embayment, Lake Allatoona, GA

  18. Little River Embayment, Lake Allatoona, GA

  19. Flint Creek

  20. Eutrophication Model

  21. Processes Considered • Phytoplankton Kinetics • Periphyton Kinetics • Phosphorus Cycling • Nitrogen Cycling • Dissolved Oxygen Balance • Sediment Diagenesis

  22. Organic Chemical Model Overview

  23. Mercury Model Overview

  24. NPDES Watershed Load Volatilization Demethylation State Variables Hg(0) Silt Hg(II) Sand MeHg Oxidation DOC Methylation Reduction Burial Mercury Model

  25. Flint Creek Example

  26. Flint Cr (AL)

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