1. Introduction to Hydrodynamic Modeling using EFDC

2. Watershed & Water Quality Modeling Technical Support Center Why EFDC Hydrodynamic Simulation? To drive the WASP water quality modelTo drive the WASP water quality model

3. Watershed & Water Quality Modeling Technical Support Center Description of EFDC Development HistoryDevelopment History CapabilitiesCapabilities Hydrodynamic moduleHydrodynamic module ApplicationsApplications Example ApplicationExample Application Linkage file to WASPLinkage file to WASP

4. Watershed & Water Quality Modeling Technical Support Center ENVIRONMENTAL FLUID DYNAMICS CODE EFDC is a public domain surface water modeling system incorporating fully integrated hydrodynamicsEFDC is a public domain surface water modeling system incorporating fully integrated hydrodynamics EFDC is extremely versatile, and can be used for 1D, 2DV, 2DH, or 3D simulations of rivers, lakes, reservoirs, estuaries, coastal seas, and wetlandsEFDC is extremely versatile, and can be used for 1D, 2DV, 2DH, or 3D simulations of rivers, lakes, reservoirs, estuaries, coastal seas, and wetlands

5. Watershed & Water Quality Modeling Technical Support Center EFDC Development History Developed by John Hamrick at Virginia Institute of Marine Science (VIMS) with primary support from the State of VirginiaDeveloped by John Hamrick at Virginia Institute of Marine Science (VIMS) with primary support from the State of Virginia Additional support has been provided byAdditional support has been provided by EPA and NOAA Presently maintained by Tetra Tech, Inc.Presently maintained by Tetra Tech, Inc. Currently used by federal, state and local agencies, consultants and universitiesCurrently used by federal, state and local agencies, consultants and universities

6. Watershed & Water Quality Modeling Technical Support Center EFDC Capabilities Three-Dimensional hydrodynamics with coupled salinity, temperature, sediment and contaminant transport modulesThree-Dimensional hydrodynamics with coupled salinity, temperature, sediment and contaminant transport modules Simulates wetting & drying of flood plains, mud flats, and tidal marshesSimulates wetting & drying of flood plains, mud flats, and tidal marshes Integrated near-field mixing zone modelIntegrated near-field mixing zone model Simulates hydraulic control structures such as dams and culvertsSimulates hydraulic control structures such as dams and culverts Simulates wave boundary layers and wave-induced currentsSimulates wave boundary layers and wave-induced currents

7. Watershed & Water Quality Modeling Technical Support Center EFDC Hydrodynamic Module Fully 3D, with 2DV, 2DH and 1D optionsFully 3D, with 2DV, 2DH and 1D options Boundary fitted curvilinear-orthogonal grid orBoundary fitted curvilinear-orthogonal grid or Cartesian grid can be used Includes turbulence closure modelIncludes turbulence closure model Highly efficient finite difference semi-implicit solutionHighly efficient finite difference semi-implicit solution Functionally similar to POM/ECOM and CH3D- WESFunctionally similar to POM/ECOM and CH3D- WES

8. Watershed & Water Quality Modeling Technical Support Center EFDC Hydrodynamic Module

9. Watershed & Water Quality Modeling Technical Support Center Where is EFDC? http://www.epa.gov/athens/wwqtsc/http://www.epa.gov/athens/wwqtsc/

10. Watershed & Water Quality Modeling Technical Support Center Example EFDC Applications Rivers – Flint (AL), Housatonic (MA), Chattahoochee (GA), Los Angeles (CA)Rivers – Flint (AL), Housatonic (MA), Chattahoochee (GA), Los Angeles (CA) Lakes - Lake Okeechobee (FL), Lake Jordan (NC), Coosa River Reservoirs (AL), Lake Allatoona (GA), Hartwell Reservoir (GA/SC)Lakes - Lake Okeechobee (FL), Lake Jordan (NC), Coosa River Reservoirs (AL), Lake Allatoona (GA), Hartwell Reservoir (GA/SC) Estuaries - Mobile Bay (AL), Neuse River (NC), Savannah River/Harbor (GA), Charleston Harbor (SC), St Johns River (FL), Lower Duwamish Waterway (WA)Estuaries - Mobile Bay (AL), Neuse River (NC), Savannah River/Harbor (GA), Charleston Harbor (SC), St Johns River (FL), Lower Duwamish Waterway (WA) Lagoons – Curonian Lagoon (Lithuania)Lagoons – Curonian Lagoon (Lithuania)

11. Watershed & Water Quality Modeling Technical Support Center Neuse River Network plan view

12. Watershed & Water Quality Modeling Technical Support Center Neuse Bathymetry

13. Watershed & Water Quality Modeling Technical Support Center

23. What Does the 3-D Hydrodynamic Model Get You? e 3-D Hydrodynamic e 3-D Hydrodynamic