FEFLOW
Commercial
DHI's finite-element groundwater platform — unstructured meshes, density-driven flow, heat and mine dewatering.
Groundwater & HydrogeologyActiveGroundwater ModellingContaminant Transport
13 tools · Category
Groundwater & Hydrogeology
Groundwater modelling has one of the deepest open-source lineages in all of engineering: MODFLOW has been in continuous development by the USGS since 1984, and the Python ecosystem around it (FloPy above all) is exceptionally mature. This category covers aquifer simulation, contaminant transport, well hydraulics and calibration tooling — from full 3D finite-difference suites to analytic-element models you can run in a notebook.
FloPy
Open SourceVerified
The Python interface to MODFLOW — build, run and post-process groundwater models entirely in code.
Groundwater & HydrogeologyActiveMODFLOWGroundwater Modelling
Groundwater Vistas
Commercial
Veteran commercial MODFLOW GUI with deep PEST integration — a consultant favourite for calibration-heavy work.
Groundwater & HydrogeologyActiveMODFLOWGroundwater Modelling
HYDRUS
Freemium
The standard for vadose-zone modelling — variably saturated flow and transport by Richards' equation.
Groundwater & HydrogeologyActiveGroundwater ModellingContaminant Transport
MODFLOW 6
Gov-PublicVerified
The USGS groundwater model — the world standard for aquifer simulation, rebuilt as a modular multi-model framework.
Groundwater & HydrogeologyActiveMODFLOWGroundwater Modelling
MODPATH
Gov-Public
USGS particle tracking for MODFLOW — pathlines, travel times and capture zones from flow solutions.
Groundwater & HydrogeologyStableMODFLOWGroundwater Modelling
MT3D-USGS
Gov-Public
Multi-species solute transport for MODFLOW — advection, dispersion, sorption and reactions in aquifers.
Groundwater & HydrogeologyStableContaminant TransportMODFLOW
ModelMuse
Gov-Public
The USGS's free graphical interface for MODFLOW — grid-independent model design without a commercial GUI.
Groundwater & HydrogeologyActiveMODFLOWGroundwater Modelling
PEST
Free
Model-independent parameter estimation and uncertainty analysis — the calibration standard for groundwater models.
Groundwater & HydrogeologyActiveGroundwater ModellingMODFLOW
PHREEQC
Gov-Public
USGS geochemical modelling — speciation, batch reactions, 1D reactive transport and inverse modelling.
Groundwater & HydrogeologyActiveContaminant TransportWater Quality Modelling
Pastas
Open Source
Time-series analysis of groundwater heads in Python — transfer-function models instead of full aquifer simulation.
Groundwater & HydrogeologyActiveGroundwater ModellingPython Hydrology
TimML
Open Source
Analytic element groundwater modelling in Python — multi-layer steady flow with no grid at all.
Groundwater & HydrogeologyActiveGroundwater ModellingPython Hydrology
pyEMU
Open Source
Python framework for PEST/PEST++ workflows — programmatic setup, ensembles and uncertainty analysis.
Groundwater & HydrogeologyActiveGroundwater ModellingMODFLOW