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

2. TMDL Modeling Toolbox -- WASP WASP Overview HistoryHistory –In the Beginning –In the Middle –And Now……

3. TMDL Modeling Toolbox -- WASP What is WASP? Water Quality ModelWater Quality Model –Conventional Pollutants –Organic Chemicals –Mercury

4. TMDL Modeling Toolbox -- WASP WASP Structure WASP Transport Bookkeeping Kinetics + = EUTRO or TOXI

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

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

7. TMDL Modeling Toolbox -- WASP Generalized Model FrameworkGeneralized Model Framework –Box Model –1, 2, or 3 Dimensions

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

9. TMDL Modeling Toolbox -- WASP WASP is a Variable Complexity Modeling System When building a water body model, adjust complexity to match the problem.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. TMDL Modeling Toolbox -- WASP Components of a Complex Water Body Modeling Framework Watershed loading modelsWatershed loading models Hydrodynamic and transport modelsHydrodynamic and transport models Contaminant fate modelsContaminant fate models Food web bioaccumulation modelsFood web bioaccumulation models

11. TMDL Modeling Toolbox -- WASP Processes that Control Complexity Network Spatial VariabilityNetwork Spatial Variability Time VariabilityTime Variability Transport PatternsTransport Patterns Loading PatternsLoading Patterns Chemical InteractionsChemical Interactions

12. TMDL Modeling Toolbox -- WASP WASP Transport Scheme Six Different Flow FieldsSix Different Flow Fields –Surface Water –Porewater –3 Solids Transport Fields –Evaporation/Precipitation

13. TMDL Modeling Toolbox -- WASP WASP Transport Scheme Flows in WASP can beFlows in WASP can be –Specified in the input dataset –Read from a hydrodynamic interface file created by another model or program

14. TMDL Modeling Toolbox -- WASP Simple Flow Through River 123456 0 0

15. TMDL Modeling Toolbox -- WASP Hydrodynamic Linkage Complex SystemsComplex Systems –Estuaries –Stratified System Stormwater ModelingStormwater Modeling

16. TMDL Modeling Toolbox -- WASP Hydrodynamic Prediction of …..Prediction of ….. –Travel Time –Water Depth –Water Velocity –Temperature –Salinity

17. TMDL Modeling Toolbox -- WASP Little River Embayment, Lake Allatoona, GA

18. TMDL Modeling Toolbox -- WASP Little River Embayment, Lake Allatoona, GA

19. TMDL Modeling Toolbox -- WASP

20. Flint Creek

21. TMDL Modeling Toolbox Eutrophication Model

22. TMDL Modeling Toolbox -- WASP Processes Considered Phytoplankton KineticsPhytoplankton Kinetics Periphyton KineticsPeriphyton Kinetics Phosphorus CyclingPhosphorus Cycling Nitrogen CyclingNitrogen Cycling Dissolved Oxygen BalanceDissolved Oxygen Balance Sediment DiagenesisSediment Diagenesis

23. TMDL Modeling Toolbox -- WASP

24. TMDL Modeling Toolbox Organic Chemical Model Overview

25. TMDL Modeling Toolbox -- WASP

26. TMDL Modeling Toolbox Mercury Model Overview

27. TMDL Modeling Toolbox -- WASP Mercury Model VolatilizationWatershed Load State Variables Hg(0) Silt Hg(II) Sand MeHg Methylation Demethylation Oxidation Reduction Burial NPDES DOC

28. TMDL Modeling Toolbox Flint Creek Example

29. TMDL Modeling Toolbox -- WASP Flint Cr (AL)

30. TMDL Modeling Toolbox -- WASP