Chesapeake Bay Model Inventory and Selection Tool (MIST)
The MIST tool is a collection of models relevant for water management and decisionmaking in the Chesapeake Bay Watershed and Mid-Atlantic region.
To find models, you can search by keyword, filter by model characteristics, or view all models. Click or tap a model name to see more details.
3DFATMIC Three-Dimensional Subsurface Flow, Fate and Transport of Microbes and Chemicals (3DFATMIC) Model
3DFATMIC is a three dimensional groundwater model that simulates flow in saturated and unsaturated zones and the fate and transport of contaminants, including relevant chemical or biological transformations.
ADCIRC is a coastal model that is comprised of a system of computer programs that utilize the finite element method to solve time dependent, free surface circulation and transport problems in two and three dimensions. ADCIRC is capable of modeling storm surge dynamics, tidal and wind ocean circulation, and sediment and larvae transport.
AGNPS is a land use and conservation model that simulates the effects of pollutant loading, nutrient cycling, sediment transport and evapotranspiration in agricultural watersheds.
ANSWERS is a distributed parameter, event-oriented, non-point source pollution planning model developed to evaluate the effects of BMPs on surface runoff and sediment loss from agricultural watersheds. QUESTIONS is an affiliated model that provides an option to integrate ANSWERS with GIS.
The Agricultural Policy / Environmental eXtender (APEX) model is a rural region watershed model designed to determine the relationships between land use and watershed runoff dynamics. Modelled processes include rainfall-runoff dynamics, nutrient cycling, flow routing, erosion dynamics, and pesticide use.
AQUATOX is an process-based ecosystem model that simulates the fate of pollutants and their direct and indirect biological effects on aquatic ecosystems. It is capable of simulating lakes and ponds, reservoirs, rivers and streams, estuaries, and experimental ponds and enclosures.
Atlantis is an ecosystem model that simulates the effects of adaptive management strategies on marine ecosystems, including biophysical, economic and social dynamics. Atlantic models the impacts of pollution, commercial fishing, coastal development, and climate change.
Better Assessment Science Integrating Point and Nonpoint Sources (BASINS) is a U.S. Environmental Protection Agency (USEPA) model that supports watershed and water quality studies, including the development of total maximum daily loads (TMDLs), coastal zone management, nonpoint source programs, and National Pollutant Discharge Elimination System (NDPES) permitting.
BasinSim 1.0 is a watershed model for small- to medium-sized watersheds capable of simulating sediment and nutrient loads under multiple scenarios. It is based on the Generalized Watershed Loading Functions (GWLF) model. BasinSim is intended to support water resource management decisions and includes a graphical user interface (GUI) and various databases (land use, population, soil tyoe, water discharge, water quality, climate, point nutrient sources, etc.)
Beach-fx is a event-based simulation model built and managed by the U.S. Army Corps of Engineers (USACE). It is intended to evaluate shore protection projects based upon their physical performance and economic costs and benefits. The Beach-fx modeling software is based upon Monte Carlo life cycle simulation and a Geographic Information System (GIS) framework. The model combines meterology, coastal engineering and economic analyses.
The CASCade 2 Dimensional SEDiment (CASC2D-SED) model estimates the runoff hydrograph generated from rainfall events and is capable of of predicting sediment rates across the modeled watershed. It considers spatially and temporally-varying rainfall events and calculates runoff and sedimentation based upon a variety of flow routing, infiltration, detention, sediment transport and erosion algorithms.
The Chesapeake Assessment Scenario Tool (CAST) is a web-based water quality and stormwater management planning and modeling tool. It is capable of assessing total maximim daily loads (TMDLs), nonpoint source pollutant management, and municipal stormwater programs across the Chesapeake Bay basin. It allows users to assess the efficacy and cost of various best management practices (BMPs) for meeting nitrogen, phosphorus, or sediment load goals.
CE-QUAL-ICM is a watershed model developed by the US Army Corps of Engineers (USACE) designed to capture water quality and eutrophication processes in lakes, rivers, estuaries and coastal waters. It is capable of representing multiple geochemical cycles as well as salinity, temperature and suspended solids.
CH3D-SSMS is a coastal hydrodynamic ocean, estuary and lakes model that captures complex near shore geometry effects, sediment transport, aquatic vegetation interactions, and water quality effects. The model can be paired with SWAN to include storm surge effects and wetting and drying processes.
The Chesapeake Bay Airshed Model is the air quality model component for the Chesapeake Bay Model that evaluates atmospheric nutrient deposition from power plants and vehicles through a combination of regression techniques.
The Chesapeake Bay Estuary Model is a hydrodynamic and water quality model of the Chesapeake Bay estuary designed to predict water temperature, wave movement, sediment transport, and algal bloom formation, among others.
The Chesapeake Bay Land Change Model is the land change component model for the Chesapeake Bay Model. The land change model is an empirical model based upon housing and population data, land cover and conversion trends and sewer service areas. It is capable of analyzing and forecasting land change and its effects on sewers and septic systems in the Chesapeake Bay.
The Chesapeake Bay Program's Scenario Builder allows users to generate management scenarios and input data for the Chesapeake Bay models. It can be used to develop TMDL strategies, BMP implementation and land use scenarios. The Scenario Builder is capable of generating past, present or future scenarios that allow users to evaluate management actions and alternatives.
The Chesapeake Bay Watershed Model includes 2,000 segments that represent the 64,000-square-mile Chesapeake Bay watershed. It is designed to capture hydrologic model processes within the watershed, including flow routing, nutrient fate and transport, and nutrient removal from best management practices (BMP), among others. Each of the 2,000 segments includes several sub-models: (i) a hydrologic sub-model that calculates runoff and sub-surface flow; (ii) a non-point source sub-model that estimates soil erosion and pollutant loads; (iii) a river sub-model that routes flow and pollutant loads.
CMAQ is a scenario-based multipollutant, multi-scale air quality model that evaluates air pollutant emissions and transformations.
CMhyd is a Python-based tool to enable the use of global and regional climate model data in hydrological models. It applies temporal and spatial bias correction of climate model data, so it can best represent the observation gauges used as inputs for hydrological models.
CoastWatch Utilities is a data analysis tool created by the National Oceanic & Atmospheric Administration (NOAA) to support the use of NOAA atmospheric and oceanographic data. It includes a visualization and statistical analysis tool and allows for the compilation and export of available satellite data.
Climate Resilience Evaluation and Awareness Tool (CREAT) was designed for water utilities to assesses local climate change risk. The model identifies the climate change risks that pose the greatest threat to local communities. CREAT is designed to improve understanding of risk thresholds and predict subsequent asset failures under climate change.
The U.S. Army Corps of Engineers Coastal Storm Modeling System (CSTORM-MS) is a system of models intended to support coastal engineering needs. It is capable of simulating real and synthetic coastal storms, including tropical and extra-tropical, wind, wave and water levels, and coastal response.
D-Flow Flexible Mesh Suite (D-Flow FM) is a multi-dimensional hydrodynamic simulation model of coastal, river and estuarine systems.
The Delft3D Water Quality Particle Tracking (D-WAQ PART) simulates transport and water quality with a means of a particle tracking method.
Delft3D Water Quality (D-Water Quality) is a set of high performance solvers that cover many aspects of water quality and ecology, including basic tracers, dissolved oxygen, nutrients, organic matter, inorganic suspended matter, heavy metals, bacteria and organic micro-pollutants, as well as complex algae and macrophyte dynamics.
Delft3D Waves (D-Waves) simulates the unsteady propagation of short-crested, wind-generated waves in estuaries and barrier islands with tidal inlets, tidal flats, lakes and channels.
Delft3D is an integrated hydrodynamic modeling suite that can simulate two- and three-dimensional flow, water quality, sediment transport, ocean and tide dynamics and near shore wave dynamics.
Delft3D-FLOW is a two- and three-dimensional hydrodynamic model of unsteady flow, water quality and sediment transport, as well as tidal waves, morphology and ecology from tidal and precipitation inputs.
Delft3D-WAVE simulates coastal waves in estuaries, tidal inlets, lakes, barrier islands with tidal flats, channels, and coastal regions. The model can be used to assess the effects of coastal development and management strategies.
The Dynamic Watershed Simulation Model (DWSM) is a watershed model capturing rainfall-runoff dynamics for extreme rain events in agricultural watersheds. It is capable of simulating hydrologic, sedminent transport and erosion processes.
The estuarine carbon biogeochemistry (ECB) modeling system is a coastal biogeochemistry land-estuary-ocean model designed to track nitrogen fluxes and speciation from riverine systems into the Chesapeake Bay estuary and ocean system.
ECOMSED is a three-dimensional hydrodynamic and sediment transport model that simulates flow, depth, velocity and disperion in coastal and freshwater bodies.
ECOPATH is an aquatic ecosystem model for use in fisheries assessment as well as addressing environmental management questions. Relevant species are treated as a pool and linked to related species. Within a species, flows between age groups can be tracked in addition to predator-prey relationships.
The Environmental Fluid Dynamics Code (EFDC) is a surface water model of inland and coastal water bodies with hydrodynamic, sediment and contaminant transport and eutrophication processes. It is relevant to environmental assessments for management and regulatory decision making.
ENVISION is a scenario-based regional planning land use environmental assessment model. ENVISION evaluates human decision-making processes associated with natural events such as fire. The decision-making processes evaluated include zoning adjustments and other environmental policies.
The United States Environmental Protection Agency (US EPA) developed a suite of numerical watershed infiltration process models available using MathCAD 6.0 spreadsheet model. Numerical infiltration models include, the SCS Curve number method, the Phillips 2 term model, the Layered Green Ampt Model, the Explicit Green Ampt Model, the Constant Flux Green Ampt Model, and the Infiltration/Exfiltration model.
EPANET is a water transmission and distribution network model designed to model the hydraulics of pressurized pipe networks, including chemical concentration and source tracing.
The Environmental Policy Integrated Climate (EPIC) model is a land use model to evaluate the sustainability of agricultural systems, focused on soil productivity and crop growth. It is capable of modeling over 80 crops and the effects of a variety of land and water management strategies. Agricultural systems sustainability is assessed based on erosion, land management with water quality effects.
The Virginia Institute of Marine Science (VIMS) Estuarine Ecosystem Simulation Model (ESM) is a coastal estuary model that captures sediment transport, water quality effects, and ecosystem response processes.
The Extratropical Surge and Tide Operational Forecast System (ESTOFS) is a storm surge model results viewer built by a collaboration between the National Oceanic and Atmospheric Administration (NOAA) and NOAA's National Ocean Service's Coast Survey Development Lab (CSDL) to provide estimations of coastal storm surge for the U.S. Atlantic and Pacific coastlines, as well as Hawaii and Alaska. The underlying ADCIRC model is run externally and results are displayed in ESTOFS as web-based graphics. The ESTOFS viewer includes the effects of harmonic tide, subtidal water level and combined surge and tide.
The Extratropical Storm Surge Model (ETSS), or ET-SURGE, is a coastal near-shore wave model used to estimate coastal water level under extratropical storm conditions. ETSS was developed by the National Weather Service (NWS) Meteorological Development Laboratory (MDL), based largely upon the SLOSH model (or Sea, Lake and Overland Surges from Hurricanes). The model provides one to 22 hour advanced predictions of storm surge four times daily.
The Exposure Analysis Modeling System (EXAMS) is built to support ecological risk assessment a predictive aquatic ecosystem model that evaluates pollutant fate and transport processes of synthetic organic chemicals, such as pesticides, industrial chemicals and leachates from disposal sites. EXAMS was developed by the US Environmental Protection Agency (US EPA).
EXPRESS EXAMS - PRZM Exposure Simulation Shell (EXAMS = Exposure Analysis Modeling System) (PRZM = Pesticide Root Zone Model)
EXPRESS, or the EXAMS - PRZM Exposure Simulation Shell, is a combination of the EXAMS and PRZM models developed to assess the exposure of aquatic pesticides on crops. The EXPRESS model contains two tiers: (1) a high-level identification of harmful pesticides and (2) a risk assessment model based on watershed fate and transport processes.
FEMWATER Three-Dimensional Finite Element Model of Water Flow Through Saturated-Unsaturated Media (3DFEMWATER)
Three-Dimensional Finite Element Model of Water Flow Through Saturated-Unsaturated Media (3DFEMWATER) FEMWATER is a groundwater model that can be used to model groundwater flow and contaminant transport in three dimensional porous media with varying levels of saturation and multiple types and configuations of contaminant sinks and sources. It can be used in conjuction with the Three-Dimensional Lagrangian-Eulerian Finite Element Model of Waste Transport Through Saturated-Unsaturated Media (3DLEWASTE), and can be used as the groundwater component of the US Army Corps of Engineers (USACE) Groundwater Modeling System (GMS).
The Delft Flood Early Warning System (Delft-FEWS), originally developed as a flood forecasting model, is a data and modeling platform capable of forecasting flood, drought and seasonal water resources changes. Delft-FEWS is a open collection of modules that can customized to the water management needs of a given institution, including hydrologic forecasting, water quality evaluation, and prediction of reservoir management, hydropower, groundwater and navigation effects associated with flood events.
The Flooded Locations and Simulated Hydrographs (FLASH) is a flash flood prediction model intended to improve the accuracy, timing and spatial resolution of warning systems for flash floods. FLASH produces flash flood forecasts at one kilometer resolution at near-real time.
FLO-2D is a flood routing model that includes channel, overland and street flow and is capable of flood routing across complex terrain.
The Unstructured Grid Finite Volume Community Ocean Model (FVCOM) simulates ocean circulation and ecosystem dynamics from estuary to global scales. It is capable of capturing estuary wetting and drying effects, steep bathymetry effects, sediment transport and water quality.
The Green Infrastructure Flexible Model (GIFMod) is a adaptable set of hydraulic and particle transport modules that can be used to evaluate the stormwater retention and water quality benefits of green infrastructure (GI) as well as other urban and agricultural best management practices (BMPs).
The US Army Corps of Engineers (USACE) Groundwater Modeling System (GMS) is a three-dimensional groundwater modeling and visualization environment for groundwater flow and contaminant transport that can interface with and integrate several widely-used groundwater models, such as FEMWATER, MODFLOW, WASH123D, etc. It is capable of simulating and visualizing subsurface flow, contaminant fate and transport and the performance and evaluation of groundwater remediation measures.
The Geographic Resources Analysis Support System (GRASS) is a suite of geospatial analytics and programs available free and open source for Geographic Information System (GIS) software. It allows users to perform geospatial data management and analysis, mapping and visualization and an array of spatial modeling techniques.
GSFLOW, or Groundwater and Surface water FLOW, is a groundwater model that is capable of simulating coupled groundwater-surface water interactions, land use change implications, groundwater withdrawals and the effects of climate change. GSFLOW is based upon the integration of the US Geological Survey (USGS) Modular Groundwater Flow Model (MODFLOW-2005 and MODFLOW-NWT) with the USGS Precipitation-Runoff Modeling System (PRMS-V).
Hazards U.S. Multi-Hazard (HAZUS-MH) is a Geographic Information System (GIS)-based model developed by the US Federal Emergency Management Agency (FEMA) designed to estimate infrastructure loss estimates due to hurricanes, floods, earthquakes and tsunamis.
The Hydrologic Engineering Center's Ecosystem Functions Model (HEC-EFM) is an ecosystem model that captures an ecosystem's response to changes in flow for a number of flow regimes and ecosystem relationships. HEC-EFM uses statistical analyses of hydrological and ecological systems, hydraulic modeling and geographic information systems (GIS) to represent how ecosystems respond to changes in the flow regime of a river or connected wetland. HEC-EFM also allows users to visualize and define ecological conditions, identify sites for restoration and examine and priortize restoration options or interventions.
The Hydrologic Engineering Center's Flood Damage Reduction Analysis (HEC-FDA) is a watershed model that captures hydrologic flow processes and calculates the associated flood damages. It is designed to be utilized for formulating and evaluating flood risk management measures.
The Hydrologic Engineering Center's Flood Impact Analysis (HEC-FIA) is a tool for quantifying the consequences of flood events. It utilizes the output of gridded flood data or stage hydrographs to calculate structure and content damages, agricultural losses, and estimate potential life loss.
The Hydrologic Engineering Center (HEC) developed the HEC-GeoDozer extension as a set of tools to edit terrain data as means to support HEC-GeoSeries models (e.g., GeoHMS, GeoRAS, GeoEFM). The tool allows users to improve watershed delineations or edit Digital Elevation Models (DEM) with limited GIS experience.
The Hydrologic Engineering Center's Hydrologic Modeling System (HEC-HMS) is a watershed model designed to simulate rainfall-runoff processes, including event infiltration, unit hydrographs, and hydrologic routing. HEC-HMS also includes modules or supplements for evapotranspiration, snowmelt, and soil moisture accounting, gridded runoff simulation, model optimization, forecasting streamflow, depth-area reduction, assessing model uncertainty, erosion and sediment transport, and water quality.
The Hydrologic Engineering Center's River Analysis System (HEC-RAS) is a river model that captures both one-dimensional steady and unsteady and two-dimensional unsteady flow dynamics, sediment transport, water temperature, water quality and flow interactions with physical river structures.
The Hydrologic Engineering Center's Prescriptive Reservoir Model (HEC-ResPRM) is a reservoir management model that uses flow optimization approaches to evaluate reservoir management strategies.
The Hydrologic Engineering Center's Reservoir Simulation (HEC-ResSim) is a reservoir model designed to simulate reservoir operations for flood management, low flow augmentation, water supply, reservoir regulation and decision support.
The Hydrologic Engineering Center's Regime Prescription Tool (HEC-RPT) estimates and visualizes watershed flow time series data, and provides visualization tools for project management and alternative evaluation.
The Hydrologic Engineering Center's Real Time Simulation (HEC-RTS) is a real time simulation watershed model intended for short-term watershed management decision support. Model capabilities include data integration, validation, visualization and communication, and simulation of groundwater infiltration, overland flow, base flow, and channel flow processes.
The Hydrologic Engineering Center's Statistical Software Package (HEC-SSP) is capable of performing statistical analyses of hydrologic data.
The Hydrological Engineering Center's Watershed Model and Analysis Tool (HEC-WAT) is designed to integrate USACE models and perform risk analyses in a systems approach.
The High Ecological Resolution Classification for Urban Landscapes and Environmental Systems (HERCULES) is a classification tool that focuses on the biophysical elements on the landscape rather than on land use.
The Highway Economic Requirements System State Version (HERS-ST) is an engineering and economic analysis model for evaluating transportation projects. The model includes highway deficiency analysis, cost efficiency metrics, capacity assessment, paving decisions, and future travel pattern evaluation.
The Hydrological Simulation Program - FORTRAN (HSPF) is a watershed simulation model for land and soil contaminant rainfall-runoff processes, including pollutant loading and transport of conventional and toxic organic pollutants. HSPF links with AQUATOX and PEST.
HydraPlatform is a generic graphical user interface (GUI) for code-based models and is intended for visualization and data management purposes.
Info Storm Water Management Model (InfoSWMM) is a geographic information system (GIS)-based stormwater model that integrates hydrologic and sewer collection system modeling and optimization functionality.
InfoWorks Integrated Catchment Model (ICM) can simulate one-dimensional infrastructure and two-dimensional overland flows to model catchment behavior.
iTREE is an urban and rural forest management land use suite of models designed to quantify the benefits provided by area trees. Benefits are quantified based on carbon sequestration, pollution reduction, water retention and urban heat island effects.
The kinematic runoff and erosion model (KINEROS2) is a rural and urban watershed model that captures flow infiltration, flow routing, and sediment transport.
MapShed is a watershed model for evaluation of TMDL requirements. Model capabilities include sediment and nutrient transport, pathogen movement, urban water flow interactions, and BMP assessment.
MEM is a wetlands model designed to simulate marsh dynamics under sea level rise. The captured marsh processes include sediment transport, water level rise, terrestrial and intertidal vegetative response.
MIKE 3 is a simulation tool of three-dimensional free surface flows and associated sediment and water quality processes.
MIKE ECO Lab is a model support tool for adapting ecological system models to simulate water quality, eutrophication, heavy metals and ecological impacts.
MIKE FLOOD is a flood model capable of simulating one- and two-dimensional flow in rivers, floodplains, urban catchments, drainage networks, coastal areas, dams, levees, among others.
MIKE HYDRO Basin is a geospatial decision support tool for integrated water resources analysis, planning and management of river basins.
MIKE HYDRO River can simulate river hydraulics, water quality, flooding, forecasting, navigation as well as catchment dynamics and runoff. It includes a geographic information system (GIS)-based graphical user interface (GUI).
MIKE Système Hydrologique Européen (MIKE SHE) is a modelling framework for simulating hydrological process, including groundwater, surface water, recharge and evapotranspiration.
MIKE URBAN(+) models urban water systems, including water distribution, storm water drainage, sewage collection in separate and combined systems and urban flooding. It features full hydrological and hydraulic modelling capabilities, including water quality, for all parts of urban water systems.
MLEAM is a groundwater flow model.
The U.S. Geological Survey (USGS) Modular Modeling System (MMS) is a model interface for USGS models. The interface combines USGS models and pairs with Bureau of Reclamation models.
MODFLOW is a groundwater model designed to simulate groundwater flow, solute transport and seawater intrusion through the subsurface.
MODSIM-DSS is a decision support system platform and includes a river basin model and a linked river-aquifer model. The modelling system also includes a data management component.
The Maryland Department of Transportation State Highway Administration (MDOT SHA) Maryland Statewide Transportation Model (MSTM) is a transportation model that includes three types of planning models: (1) travel demand simulations, (2) evaluation of highway segments and corridors, and (3) microsimulation for detailed traffic simulations.
The Mass Transport in 3-Dimensions - United States Geological Survey (MT3D-USGS) is a solute reactive transport groundwater model embedded within MODFLOW. Modelled processes include unsaturated flow transport, pollutant exchange between surface and groundwater, pollutant reactions, interspecies interactions.
The National Stormwater Calculator (SWC) is a tool for computing site-specific stormwater runoff based upon local soil conditions, land cover and precipitation records.
National Water Model is a hydrologic watershed model that forecasts streamflow for over 4,000 stream gauges.
The United States Environmental Protection Agency (US EPA) National Stormwater Calculator (SWC) is a precipitation model designed to generate annual rainfall and runoff frequency estimates at specific sites.
The National Oceanic and Atmospheric Administration (NOAA) National Severe Storm Laboratory (NSSL) compiles extreme storm data from tools and analysis. Tools included decision-making and forecasting models for severe storm systems, thunderstorms, severe precipitation, and flash flood events.
OpenFlows FlowMaster performs hydraulic calculations for hydraulic structures that range from pipes and open channels to drop inlets and weirs.
P8 Urban Catchment Model Program for Predicting Polluting Particle Passage Thru Pits, Puddles, and Ponds (P8) Urban Catchment Model
Program for Predicting Polluting Particle Passage Thru Pits, Puddles, and Ponds (P8) Urban Catchment Model simulates the generation and transport of stormwater runoff pollutants in urban watersheds.
Personal Computer Storm Water Management Model (PCSWMM) is a one- and two-dimensional urban catchment model for water supply, drainage and green infrastructure design, floodplain delineation, sewer overflow mitigation, water quality and integrated catchment analyses.
The Parameter ESTimation (PEST++) model is designed for parameter estimation of large environmental system models.
PHAST is groundwater model intended for evaluation of contamination events. Modelled processes include three-dimensional simulation of groundwater flow, solute transport, and multicomponent geochemical reactions.
The Penn State Integrated Hydrologic Model (PIHM) is a multi-process, multiscale hydrologic model that includes groundwater, surface water, overland flow and infiltration processes.
The Princeton Ocean Model (POM) is an ocean model that captures large-scale ocean circulation processes, nearshore coastal wave dynamics, turbulence dynamics, coastal wetting-drying dynamics.
The United States Geological Survey (USGS) Precipitation-Runoff Modeling System (PRMS) includes rainfall-runoff dynamics and groundwater recharge, under average and extreme precipitation and snowfall conditions.
The Pesticide in Water Calculator (PWC) and Pesticide Root Zone Model (PRZM3) are pesticide transport and watershed model for agricultural systems. The model captures runoff and erosion processes, and pesticide processes including transport through surface and groundwater, degradation kinetics, and transformation to daughter compounds.
Quality 2K (QUAL2K) is a river model using one-dimensional flow dynamics and sediment transport and benthic layer interactions.
The Regional Atmospheric Modeling System (RAMS) is a meteorological prediction models with the following components: an atmospheric model; a data analysis package to prepare input data; a post processing visualization and analysis model.
The Riverine Environmental Flow Decision Support System (REFDDS) is a hydrologic and ecosystem processes watershed model designed for decision maker support in the Delaware River Basin.
RiverWare is a one-dimensional river basin model. The model evaluates power generation, reservoir management, and water quality processes. RiverWare allows the user to select the engineering equations and algorithm complexity across multiple model components.
The Road Pricing Feasibility Tool is a traffic forecasting tool for toll highway feasibility assessments based upon traffic and revenue estimation.
The Regional Ocean Modeling System (ROMS) is an ocean model designed to simulate barotropic and baroclinic circulation, wetting and drying effects processes.
The Row-Column Advanced Ecological Systems modeling Program (Row-Col AESOP) is a water quality and hydrodynamic watershed model used to evaluate eutrophication and point and nonpoint pollution sources.
The Revised Universal Soil Loss Equation 2 (RUSLE2) is a soil erosion model based on the universal soil loss equation.
The Semi-implicit Cross-scale Hydroscience Integrated System Model (SCHISM) is a three-dimensional model that simulates baroclinic and barotropic circulation processes and effects on flow processes for creek to ocean scales.
SEAWAT is a three-dimensional groundwater model based on MODFLOW that captures density dependent interactions within the subsurface allowing for modeling of seawater to freshwater interactions.
Sediment-3D (SED3D) is three-dimensional hydrodynamic watershed model. The model links with WASP and captures processes in lakes and estuaries.
Spreadsheet-based Ecological Risk Assessment for the Fate of Mercury (SERAFM) is structured to model the fate and transport of mercury in water, sediments and fish tissue.
The United States Geological Survey (USGS) SHARP is a finite-difference coastal groundwater model designed to capture the interactions between freshwater and saltwater in layered coastal groundwater systems.
Sea Level Affecting Marshes Model (SLAMM) is a coastal model of shoreline effects due to sea level rise. Modeled processes include organic matter and sediment accumulation, shore erosion, road infrastructure effects, and interactions with aquatic vegetation.
The Sea, Lake and Overland Surges from Hurricanes (SLOSH) model is a model of storm surge dynamics, including interactions with infrastructure and coastal features.
Slope, Land cover, Exclusion, Urbanization, Transportation, and Hillshade (SLUETH) is a land use model to evaluate urban growth and land changes over time.
Surface-water Modeling System (SMS) is a hydraulic model of coastal and riverine systems. Model processes include ocean circulation, wave transformation, sediment transport, contaminant transport, rural and urban flooding, and estuary interactions. The model framework includes site characterization, model development, and results post processing and visualization.
SPARROW (SPAtially Referenced Regressions On Watershed attributes) is a watershed model using statistical regression techniques to predict regional water quality based on the correlation of measured contaminants and other spatially resolved variables.
Spreadsheet Tool for Estimating Pollutant Load (STEPL) is a model capable of simulating nutrient and sediment loads from different land uses as well as the pollutant load reductions from the implementation of best management practices (BMP).
Storm Prediction Tools is a meteorological dataset including a compilation of atmospheric, weather and other storm data. All data are collected or simulated by the National Weather Service (NWS).
StormWISE (Storm Water Investment Strategy Evaluator) is model that evaluates best management practices (BMP) projects based on their costs and pollutant load reduction.
Steady State Spectral Wave (STWAVE) is a coastal model that includes nearshore wave propagation, wave-shore interactions, and wind-wave interaction processes.
Surging Seas is an online mapping tool designed to visualize sea level rise and costal flood hazards across the United States. For specific regions sea level and storm surge effects, damage predictions, and a calculated social vulnerability index are shown.
System for Urban Stormwater Treatment and Analysis Integration (SUSTAIN) is a decision support tool for stormwater managers and practitioners to develop, evaluate and prioritize best management practices (BMP) based on water quality goals and cost.
Saturated-Unsaturated TRAnsport (SUTRA) is a groundwater model that captures saturated and unsaturated flow dynamics in the subsurface. It also simulates pollutant transport and sorption processes for contaminants.
Simulating Waves Nearshore (SWAN) is a coastal model of wave dynamics and wind-wave interactions, as well as coastal wave interactions with aquatic vegetation and infrastructure.
Simulating Waves till Shore (SWASH) is a coastal model and capabilities include near shore wave dynamics, wave-wave, wave-current and wave-structure interactions, ocean circulation dynamics, storm surge dynamics and tide dynamics.
The Soil and Water Assessment Tool (SWAT) is a scalable watershed model that evaluates land use, management strategies and climate change. Modelled processes include rainfall-runoff dynamics, water quality dynamics, crop growth effects, nutrient cycling and sediment transport mechanisms.
Soil Water Balance (SWB) is a groundwater model designed to simulate the spatial and temporal changes in groundwater recharge for a specific region.
Simulation of Surface-Water Integrated Flow and Transport in Two Dimensions (SWIFT2D) is a two-dimensional surface water model of flow, fate and tranport and water quality across a range of coastal and surface water bodies.
The United States Environmental Protection Agency (US EPA) Storm Water Management Model (SWMM) is a watershed model that captures processes such as rainfall-runoff dynamics, flow interactions with piped systems and associated water quality implications.
The Transportation Economic Land Use System (TELUS) is a transportation model used for decision support and information management. The model includes TIP (Transportation Improvement Plan) management and other tools for project planning, project scheduling, economic evaluation and prioritization among related projects.
TimML is a steady state groundwater flow model designed to simulate flow and transfer between aquifers or groundwater layers.
No documentation was found. The model is assumed to be discontinued.
The Toolkit for Integrating Land Use and Transportation Decision-Making is a transportation planning model. The Toolkit is a set of project implementation tools for planners and decision-makers and includes additional funding resources, project management tools for coordination with related environmental and public health projects, and visualization tools.
TOPMODEL is a hydrologic overland flow watershed model. TOPMODEL is based on the variable source area approach for stream flow generation and predicts streamflow, overland and subsurface flows, as well as depth to water level.
Transport of Unsaturated Groundwater and Heat (TOUGH) is a groundwater model designed to evaluate site remediation, geothermal energy, carbon sequestration, and oil and gas reservoir evaluations. Model capabilities include a coupled transport model for heat and water vapor, unsaturated groundwater flow and gas flow in porous media.
Transportation Analysis and SIMulation Systems (TRANSIMS) is a transportation model with capabilities for traffic modeling, traffic simulation and emissions analysis.
Two-Dimensional Runoff Erosion and Export (TREX) is a watershed model that expands CASC2D to include rainfall-runoff, overland flow, pollutant transport, and flooding processes.
UCODE is a parameter estimation model for watershed storage, transport and flow field parameters, among others. The model also includes uncertainty estimation.
Urban Simulation (UrbanSim) is a land use model to capture interactions among urban, environmental, transportation and economic systems.
Visualizing Ecosystem Land Management Assessments (VELMA) is an ecosystem model designed to evaluate system hydrology and terrestrial biogeochemistry. The model evaluates the operation of green infrastructure (GI) and the effects of GI failure on stream water quality.
The Virginia Institute of Marine Science (VIMS) Center for Coastal Resources Management (CCRM) Coastal Management Decision Tools are developed to support coastal resource decision making by regulatory agencies, property owners and managers and others. The tools include a flow chart that includes shorline characteristics and leads users to environmentally-preferable management decision.
Virtual Beach is a coastal water quality statistical model designed to predict fecal indicator bacteria in beach systems.
Verkehr In Stadten - SIMulationsmodell (VISSIM) is a transportation model of traffic microsimulations that accounts for all mobility and can capture human behavior and pedestrian movement. VISSIM can also perform real time traffic monitoring, transport demand modeling, and route planning and optimization.
Variably Saturated in 2D (VS2DI) is a solute and energy flow groundwater model of fate and transport processes for water flow in saturated porous media. VS2DI includes visualization and plotting tools.
Water quality Simulation Program (WASP) is a water quality model capturing eutrophication, pollutant transport and heat transport processes.
Water Availability Tool for Environmental Resources (WATER) is a streamflow simulation and decision support watershed model for the Delaware Reiver Basin.
WaterWare model is an optimization system for water resources management.
The Water Evaluation and Planning (WEAP) system is a water resources watershed planning model. WEAP evaluates water uses, facilitates stakeholder involvement, and evaluates management scenarios. Modeled processes include rainfall-runoff dynamics, water quality kinetics, groundwater flow, vulnerability assessments, ecosystem impacts, and crop and vegetation interactions.
Water Energy Biogeochemical Model (WEBMOD) is a water, energy and biogeochemical watershed model that captures the interactions in urban and natural systems. Its capabilities include optimization, sensitivity analysis, statistical analysis, forecasting, and tile-drainage system pipe flow interactions.
The Wave Exposure Model (WEMo) is coastal model that predicts near shore wind-wave dynamics. WEMo includes forecasting and hindcasting capabilities and simulates the coastal and ecosystem effects of chronic and extreme events.
Wellhead Analytic Element Model (WhAEM) is a groundwater flow model specifically intended to capture well operation dynamics including identifying the well capture zone and flow duration times to the wellhead.
Watershed Health Assessment Tools Investigating Fisheries (WHATIF) is a high-level watershed simulation model for assessing the effects of streaflow and water quality on fish habitat and populations.
Source Loading and Management Model for Windows (WinSLAMM) predicts stormwater flows and pollutant loadings for a broad range of precipitation events, development patterns, and land use practices.
The Watershed Management Optimization Support Tool (WMOST) is a high-level planning and decision support watershed management that considers the effects of management decisions on water flow and quality.
XPRAFTS is a tool for hydrologic analysis that generates runoff hydrographs at specified points across a watershed.
XP Stormwater and Flood Management Model (XPStorm) can simulate one- and two-dimensional flow in urban stormwater and river systems for stormwater and river conveyance sizing, site development, and medium-to-large flood studies, river modeling, and watershed studies.
XP Stormwater and Wastewater Management Model (XPSWMM) is a one- and two-dimensional watershed model that incorporates channels, pipes, streets, control structures, ponds, weirs, pumps, catchments, groundwater table, overland floodplains, rain gardens, among others.