Visual MODFLOW Flex
Commercial
3D groundwater flow and transport modeling environment for MODFLOW, SEAWAT, and PEST calibration workflows.
PHREEQC
ActiveUSGS geochemical modelling — speciation, batch reactions, 1D reactive transport and inverse modelling.
by US Geological Survey
- Pricing
- Gov-Public
- License
- US Government (public domain)
- Commercial use
- Permitted
- Ecosystem
- Standalone, C++ library (PhreeqcRM)
- Platform
- Windows, macOS, Linux
About PHREEQC
PHREEQC is the USGS's geochemical workhorse: aqueous speciation and saturation indices, batch reaction and mixing calculations, surface complexation, ion exchange, kinetics, one-dimensional reactive transport and inverse modelling to explain observed water chemistry. Multiple thermodynamic databases ship with it.
Any time water chemistry matters — will this injected water precipitate calcite, what happens when leachate meets aquifer — PHREEQC is the default answer engine, embedded in countless couplings (PHT3D, HP1, PhreeqcRM) that bring its chemistry to transport models. Free, documented and universally accepted.
Where it fits in the workflow
TerrainCatchmentRainfallRunoffRoutingHydraulicsMappingReporting
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