Surface Water Quality Modelling Software

EPA's aquatic ecosystem model — fate and ecological effects of nutrients, toxics and stressors together.

Water quality data management, geochemical plotting, and statistical analysis software for hydrogeologists.

EPA's watershed assessment suite — HSPF continuous watershed-quality modelling with GIS and data access built in.

The standard 2D reservoir and stratified-river water-quality model — temperature, DO and eutrophication.

Open-source 3D hydrodynamics and water quality — the EFDC lineage modernised, with a commercial GUI option.

USGS R package for long-term water-quality and streamflow trends — home of the WRTDS method.

Multi-species water quality for EPANET — model chloramine decay, DBPs and reactive chemistry in networks.

Environmental data management and 3D visualization software for hydrogeologists and site investigation teams.

eWater's stormwater-quality model — the WSUD assessment standard across Australian councils.

USGS geochemical modelling — speciation, batch reactions, 1D reactive transport and inverse modelling.

The classic river water-quality model — DO, nutrients and algae along a 1D stream network.

The USDA watershed model for land use, sediment and nutrients — continuous simulation at catchment scale.

3D groundwater flow and transport modeling environment for MODFLOW, SEAWAT, and PEST calibration workflows.

EPA's Water Quality Analysis Simulation Program — eutrophication, toxics and sediment in rivers and estuaries.

Integrated water resources planning and policy analysis framework for basin-scale supply and demand modeling.