MODFLOW 6
Gov-PublicVerified
The USGS groundwater model — the world standard for aquifer simulation, rebuilt as a modular multi-model framework.
Groundwater & HydrogeologyActiveMODFLOWGroundwater Modelling
7 tools · Collection
The Modern MODFLOW Stack
The most credible modelling stack in groundwater is also completely free: MODFLOW 6 as the engine, FloPy to build and run models as reproducible Python scripts, PEST and pyEMU for calibration and uncertainty, MODPATH for particle tracking, MT3D-USGS for transport, and ModelMuse when a GUI helps. This is the stack the USGS itself teaches — commercial GUIs add convenience, not capability.
FloPy
Open SourceVerified
The Python interface to MODFLOW — build, run and post-process groundwater models entirely in code.
Groundwater & HydrogeologyActiveMODFLOWGroundwater Modelling
PEST
Free
Model-independent parameter estimation and uncertainty analysis — the calibration standard for groundwater models.
Groundwater & HydrogeologyActiveGroundwater ModellingMODFLOW
pyEMU
Open Source
Python framework for PEST/PEST++ workflows — programmatic setup, ensembles and uncertainty analysis.
Groundwater & HydrogeologyActiveGroundwater ModellingMODFLOW
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