Filters

Clear Filters
Model
Delft3D FM LSPC MIKE 21 FM L-THIA TETIS - N WASP8 Delft3D INCA AnnAGNPS APEX Mike Basin AGNPS-VSA PCLake WEP-N QUAL2K NDP EFDC HSPF InVEST DLEM CBP-WSM (Chesapeake Bay Program Watershed Model) GWLF SUSTAIN ELEMeNT-N SimplyP CE-QUAL-W2 PCSWMM DHSVM MapShed InfoWorks ICM MIKE SHE GBR Dynamic Sednet FVCOM QUAL2Kw PDP SWMM GSSHA AGNPS EcoHAT SWAT+ WAM SSHBS AVGWLF WEPP-WQ MIKE HYDRO River THMB WARMF DYRESM�CAEDYM SEAWAT-MODFLOW MIKE21 SWAT MIKE11 RGWLF GBNP SWAT-MODFLOW-RT3D GPUOM-WQ GLM SWAT - MODFLOW
Water Body Type
Watershed Water body
Location
Other The Great Barrier Reef Florida Chesapeake Bay Watershed
Watershed Size
Large Medium Small
Watershed Type
Urban Agricultural
Water Body Characteristics
Streams Estuarine Rivers Reservoirs Coastal Lakes Oceans
Water Body Size
Large Medium Small
Dimensions
3D 1D 2D
Simulation Type
Continuous model Event-based model
Parameters
TSS Chla TDS Nitrogen TP Reservoir Operations Primary production and plankton dynamics phosphorus Flow velocity Sediment Transport Water Levels DO wave parameters algae Temperature Salinity salinity TN tidal and wave parameters nitrogen Q Phosphorus Water levels
Time Step
Monthly Minutes Sub-daily Hours Seconds Daily Annual
Model Complexity
Simple Medium Complex
Simulation Objectives
evaluate water quality improvement evaluate ecological restoration projects evaluate green infrastructure implementation flood and drought management Assessing nitrogen pollution in watersheds Simulating large scale watersheds Evaluate hydrological and biogeochemical interactions in small streams Evaluate BMP and low impact development stormwater controls Screening Simulation Understanding hydrological dynamics in snow-dominated regions Holistic Simulation Watershed management developing TMDL evaluate combined and sanitary sewer overflows Climate Change Studies Assess erosion variability due to management practices modeling of complex domains BMP cost estimation simulate watersheds with variable source areas Large-scale hydrologic modeling hydropower optimization understanding and managing phosphorus fluxes within polder systems Wave-Current Interaction assess the effects of land use change Pollutant Transport Predict the effects of natural and anthropogenic changes on water quality Optimizing reservoir releases to manage downstream temperature and water quality understanding and managing nitrogen fluxes within polder systems Nutrient load assessment assess the effects of urbanization Flood Risk Assessment Extreme events evaluation Evaluate legacy Nitrogen Ecosystem Assessments assessing phosphorus loss from agricultural lands Evaluate nitrogen loads in cold regions Understanding contaminant transport through surface and subsurface systems TMDL development Modeling the transport and transformation of pollutants Watershed management to reduce sediment and nutrient loads entering the Great Barrier Reef Storm Surge analysis Floodplain Mapping flood risk assessment Assessment of Storm events Evaluate nutrient and carbon fluxes in stream networks BMP Evaluations Urban stormwater management and flood control Environmental Impact Assessments evaluate storm events Algal Bloom Predictions Support reservoir management decisions Water Supply Management Erosion analysis assess sediment and nutrient transport BMP locations NPS nutrient loads evaluation Evaluate groundwater nutrient dynamics sustainable water resource management Coastal and Estuarine Hydrodynamics Support navigation predict nitrogen transport and transformation within a watershed management of eutrophication and algal blooms
Data Requirements
DEM Soil Wind speed Hydraulic conductivity Specific yield Wind Speed Relative humidity River reach characteristics Water quality Sewer networks DO Wind Precipitation Temperature Porosity N surplus Algae Flow Sediment characteristics Stream network LULC Solar radiation ET Hydraulic data Specific storage Geomorphic parameters Bathymetric data
Model Availability
Open source Not open source Open source (www.ce.pdx.edu/w2) Open source (https://www.epa.gov/water-research/storm-water-management-model-swmm)
Model Limitations
Poor prediction of peak flows Simplified biogeochemical processes Simplified representation of nutrient dynamics Limited model flexibility for internal modifications Simulates N Only Difficulty in verifying LID component for modeling bioretention cells No provision for developing TMDLs Limited applications in subtropical regions Not suitable for shallow systems Does not allow multiple subbasins to connect to a single reach Does not incorporate SOD Does not simulate physical characteristics of BMPs Poor simulation of small watersheds Limited to small stream networks Lacks the conception of subbasin Cannot fully capture lateral floodplain interactions Limited to polder systems Cannot simulate changes in aquatic ecosystem dynamics Semi-distributed model Manual calibration Temporally lumped Struggles with small-scale local flows Does not incorporate urban drainage Model expertise Does not consider secondary currents Monthly nutrient load outputs Does not simulate P Assumes horizontal homogeneity Lumped model Fixed internal structure Lacks optimization procedures for reservoir operation Requires high resolution grids Simplified hydraulic processes Limited ability in addressing long-term legacy N dynamics Limited applications in urban watersheds Requires detailed spatial data Does not simulate large watersheds Does not simulate specific agricultural and urban pollution inputs Extensive datasets Simplified hydrological processes Topography data may require preprocessing Does not simulate small outlets loss directly Limited to Florida terrain Limited crop differentiation Does not incorporate wind effects Does not simulate vegetation or forest changes Limited to the Great Barrier Reef High uncertainty Hydrostatic assumption for vertical momentum equation Does not account for nitrate transport in the vadose zone Limited ecohydrological processes Accuracy decreases with higher trophic levels Simplified soil P processes Calibration Complexity Limited backwater flooding simulations Poor simulation of extreme events Model Expertise Limited applications in the USA Steady state conditions Limitations in storm sewer pipes simulation and calibration Requires numerous parameters and complex calibration Loads modeled by scenarios with MP effects are always lower than the alternative scenario because the CBPWSM assigns a load reduction credit to each MP Limited to urban watersheds Limited applications for representing hydrological consequences of climate change Limited to main stream simulation GUI is not open source Can not be coupled with optimization algorithm Empirical water quality simulations limited to the Chesapeake Bay Watershed Model unstability with larger time steps Sensitive to specific input parameters Limited hydrodynamics Non-commercial purposes only Simplified Bottom seepage simulation Cannot model supercritical flow CBPWSM does not model lag times Poor groundwater simulation Algal processes are oversimplifed Spatial limitations of the WSM preclude edge of field scale representation of phosphorus (P) losses Requires high computational resources Does not incorporate Zooplankton Limited developer and community support Structured grids Inaccurate seasonal & decadal and climate projections Poor simulation of suspended solids Dependent on input data Does not deal with NPS pollution Poor interactive process between surface and subsurface water Simplified Mixing Processes Field scale model Does not support saturated runoff generating areas Dependent on Input Data Assumes channel slope is equal to zero Limited to cold regions No Water Quality Neglects bank erosion processes Empirical P simulations Does not simulate BMPs Runs a fully hydrodynamic simulation Poor channel/river routing Requires high computational resources to be coupled with GA optimization Limited applications in simulating chemical dynamics Large spatial resolution Point source loads are limited to constant loading rates for the entire simulation period Not user friendly Does not simulate urban watersheds Simplified vertical stratification Does not consider specific algae species Poor nitrate simulation Does not simulate baseflow Does not simulate N Grid dependency can affect accuracy Poor sediment simulation Limited sediment transport modeling

Model Library

Model library serves as a comprehensive reference guide for various watershed and waterbody simulation models. It provides detailed descriptions of each model’s type, developers, capabilities, limitations, computational requirements, and data inputs and outputs. The aim is to assist researchers, policymakers, and practitioners in selecting the most suitable modeling tools for their specific application. Each model entry includes links to download resources if it is open-source, relevant references, and examples of practical applications to further support users in making informed decisions. For more details see Model Library.