EFDC+
Freemium
Open-source 3D hydrodynamics and water quality — the EFDC lineage modernised, with a commercial GUI option.
11 tools · Topic
Contaminant Transport Modelling Tools
Advection, dispersion, sorption and decay — solute transport modelling supports remediation design and risk assessment. Indexed here: transport engines that couple to MODFLOW, reactive-transport frameworks and simpler screening tools.
EPANET-MSX
Gov-Public
Multi-species water quality for EPANET — model chloramine decay, DBPs and reactive chemistry in networks.
FEFLOW
Commercial
DHI's finite-element groundwater platform — unstructured meshes, density-driven flow, heat and mine dewatering.
HYDRUS
Freemium
The standard for vadose-zone modelling — variably saturated flow and transport by Richards' equation.
Hydro GeoAnalyst
Commercial
Environmental data management and 3D visualization software for hydrogeologists and site investigation teams.
MODFLOW 6
Gov-PublicVerified
The USGS groundwater model — the world standard for aquifer simulation, rebuilt as a modular multi-model framework.
MODPATH
Gov-Public
USGS particle tracking for MODFLOW — pathlines, travel times and capture zones from flow solutions.
MT3D-USGS
Gov-Public
Multi-species solute transport for MODFLOW — advection, dispersion, sorption and reactions in aquifers.
PHREEQC
Gov-Public
USGS geochemical modelling — speciation, batch reactions, 1D reactive transport and inverse modelling.
Visual MODFLOW Flex
Commercial
3D groundwater flow and transport modeling environment for MODFLOW, SEAWAT, and PEST calibration workflows.
WASP
Gov-Public
EPA's Water Quality Analysis Simulation Program — eutrophication, toxics and sediment in rivers and estuaries.