[Science_Parameters: Science_Category='EARTH SCIENCE', Science_Topic='TERRESTRIAL HYDROSPHERE', Science_Term='SURFACE WATER', Science_Variable_Level_1='SURFACE WATER FEATURES', Science_Variable_Level_2='RIVERS/STREAMS']
Environmental Fluid Dynamics Code (EFDC Hydro) ModelEntry ID: EPA_EFDC
Abstract: The Environmental Fluid Dynamics Code (EFDC) is a multifunctional surface water modeling system, which includes hydrodynamic, sediment-contaminant, and eutrophication components. EFDC has been applied to over 100 water bodies including rivers, lakes, reservoirs, wetlands, estuaries, and coastal ocean regions in support of environmental assessment and management and regulatory requirements.
EFDC ... is a state-of-the-art hydrodynamic model that can be used to simulate aquatic systems in one, two, and three dimensions. It has evolved over the past two decades to become one of the most widely used and technically defensible hydrodynamic models in the world. EFDC uses stretched or sigma vertical coordinates and Cartesian or curvilinear, orthogonal horizontal coordinates to represent the physical characteristics of a waterbody. It solves three-dimensional, vertically hydrostatic, free surface, turbulent averaged equations of motion for a variable-density fluid. Dynamically-coupled transport equations for turbulent kinetic energy, turbulent length scale, salinity and temperature are also solved. The EFDC model allows for drying and wetting in shallow areas by a mass conservation scheme. The physics of the EFDC model and many aspects of the computational scheme are equivalent to the widely used Blumberg-Mellor model and U. S. Army Corps of Engineers' Chesapeake Bay model.
Role: TECHNICAL CONTACT
Email: wool.tim at epa.gov
Ecosystems Research Division U.S. Environmental Protection Agency 960 College Station Road
Province or State: Georgia
Postal Code: 30605-2700
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