Surface Water Models
The following surface water models were developed by the U.S. Environmental Protection Agency in conjunction with other government, academic, and commercial institutions. To find out more about a particular model, click on a hyper-linked model name in the table below. The models listed are available for download and are subject to the distribution and support policy.
| Product Name | Operating System | Key Words | Supported by ORD? |
|---|---|---|---|
| AQUATOX | Windows | AQUATOX, simulation model, fate prediction, aquatic systems, effect on ecosystem, ecological risk assessments, aquatic ecosystem | Yes |
| BASINS | Win XP, Vista, 7, 8, 10 | multipurpose environmental analysis system, watershed management, water quality, tmdl, gis framework, analytical components, NPDES | Yes |
| CGEM | Linux | water quality, nutrients, hypoxia, eutrophication, surface water, sediment, estuary, marine, mechanistic model | Yes |
| DFLOW | Win XP, Vista, 7, 8 | stream flows, low flow analysis, design flow statistics, daily stream flow records | No |
| EFDC | Win 98, NT, 2000, XP | surface water, hydrodynamic, sediment-contaminant, eutrophication, rivers, lakes, reservoirs, wetlands, estuaries, coastal ocean regions, assessment, management, regulatory | No |
| EXAMS | Win 98, NT, 2000, XP | aquatic biology, assessment, biology, chemistry, compliance, environmental effects, metals, NPS related, permits, pesticides, point source(s), rivers, streams, surface water, test/analysis | Yes |
| EXPRESS | Win 98, NT, 2000, XP | PRZM, EXAMS, exposure, shell | No |
| GCSOLAR | Windows 7,8,10 | solar, photolysis, half-life, pollutant, aquatic, ozone | No |
| HMS | Web Services | hydro-informatics, hydrologic micro services, environmental modeling, water quality data provisioning web services, modeling components, precipitation, air temperature, solar radiation, soil moisture, evapotranspiration, surface and subsurface flow, runoff. | Yes |
| HSCTM2D | Win 9x, NT | hydrology, sediment, contaminant, transport, finite element model, river, estuary | No |
| HSPF | Windows XP, Vista, Windows 7, or Windows 8 | assessment, biology, compliance, deposition, discharge, environmental effects, estuaries, hydrology, lakes, metals, monitoring, NPS related, NPDES, nutrients, permits, pesticides, point source(s), rivers, sediment, streams, surface water, test/analysis, TMDL related, toxicity | No |
| Low Flow | Text only | definition and characteristics, low flows, aquatic life criteria, design flows | No |
| PLUMES2.0 | Windows | surface, water, jet, plume, model, quality, contaminant, TMDL | Yes |
| PRZM3 | Win 98, NT, 2000, XP | assessment, discharge, environmental effects, hydrology, land use management, metals, pesticides, surface water, test/analysis | No |
| QUAL2K | Win ME, 2000, XP | aquatic biology, assessment, compliance, discharge, environmental effects, hydrology, NPS related, NPDES, point source(s), surface water, test/analysis, TMDL related | No. Please see: EPA Region 4 |
| RUSLE2 | Win 98, NT, 2000, XP | rill, interrill, erosion, sediment, overland flow, climate, soil, topography, land use | No. Please see: USDA Agricultural Research Service |
| SERAFM | MS-Excel | serafm, exposure, assessment, mercury, hg, surface water, pond, stream, river | Yes |
| SWMM | Win 98, NT, ME, 2000, XP | aquatic biology, assessment, combined sewer, community, discharge, environmental effects, metals, NPS related, NPDES, point source(s), procedure, rivers, stormwater, streams, surface water, test/analysis, TMDL related | No. Please see: Center for Environmental Solutions and Emergency Response (CESER) |
| Surface Water Toolbox | Win 7, 8 | Water Resources, Groundwater and Streamflow Information Program, n-day frequency analysis, compute biologically-based design flows, Flow duration curves | No: Please see: US Geological Service (USGS) |
| Virtual Beach | MS Windows | surface water, water bodies, beach, pathogen predictor, multiple linear regression, MLR, best-fit model | Yes |
| Visual Plumes | Win 98, NT, 2000, XP | surface, water, jet, plume, model, quality, contaminant, TMDL | No |
| WASP | Early versions of Windows, 64-bit Windows 7 or higher, Mac OSX, Linux Ubuntu | aquatic biology, assessment, compliance, discharge, environmental effects, hydrology, metals, NPS related, NPDES, point source(s), surface water, test/analysis, TMDL related | Yes |
| WHATIF | Win XP(SP2) | watershed, health, fish, habitat, macro-invertebrate, biodiversity, BASS, biomass, biota, aquatic ecosystem, MAHA, CVI, hydraulic, bankfull, flow, restoration, food web, mercury, PCB, dioxin | No |
| WMOST | Windows Excel 2010, 2013, 2016 with Macros | Integrated Watershed Management, Optimization, Decision-Support, Green Infrastructure, Tool | Yes |