Head-to-head · Groundwater Modeling Software
FREEWAT vs MT3D-USGS
FREEWAT leads on 0 checks, MT3D-USGS on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreFREEWAT · 8.7/10
- Free planboth
- Most featuresFREEWAT · 3 of 3
FREEWAT scores higher on our rubric for groundwater modeling software: 8.7 against 7.5 out of 10; our editors rank them #2 and #8.
FREEWAT is the better fit for GIS-centered modeling and water-management workflows. MT3D-USGS is the better fit for 3D multispecies transport with MODFLOW workflows.
- FREEWAT fits best
GIS-centered modeling and water-management workflows
- MT3D-USGS fits best
3D multispecies transport with MODFLOW workflows
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Side by side
| Feature | FREEWAT 8.7/10 Visit ↗ | MT3D-USGS 7.5/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.7 | 7.5 |
| Ranking | #2 in Groundwater Modeling Software | #8 in Groundwater Modeling Software |
| Best for | GIS-centered modeling and water-management workflows | 3D multispecies transport with MODFLOW workflows |
| Pricing model | Free | Free |
| Starting price | Free plan | Free plan |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Desktop | Self-hosted |
| Platforms | Windows, Linux | Windows, Linux |
| Support | Community, Docs | Docs |
| Integrations | 8 integrations | 2 integrations |
| Built for | Small business, Mid-market, Enterprise | Small business, Mid-market, Enterprise |
| Features FREEWAT 3/3 · MT3D-USGS 2/3 | ||
| Transport modeling | ✓ | ✓ |
| Surface-water coupling | ✓ | ✓ |
| GIS data exchange | ✓ (best) | Not checked yet |
| Specs | ||
| Flow modeling method | Not checked yet | Finite-difference |
| Model dimensions | Not checked yet | 3d |
| Supported platforms | Windows, Linux (macOS via Windows/Linux virtual machine) | Windows, Linux |
| Our review | ||
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| Cons |
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| Our verdict | FREEWAT is a free, open-source modeling environment delivered as a plugin for the QGIS desktop GIS. It is intended for engineering and geoenvironmental companies, water and river-basin authorities, environmental agencies, universities, and… Read the review → |
MT3D-USGS is a U.S. Geological Survey program for three-dimensional groundwater solute-transport simulation. It models advection, dispersion, chemical reactions and multispecies transport using a finite-difference numerical solution. The… Read the review → |
Strengths and trade-offs
FREEWAT — where it wins
- Combines MODFLOW-family flow modeling with solute and density-dependent transport.
- Connects groundwater and surface-water interaction modeling with QGIS.
- Includes calibration, sensitivity analysis and water-management planning tools.
Where it doesn't
- The current plugin is installable on Windows and Linux only.
- Its workflow is delivered through the QGIS desktop GIS plugin.
- Support channels are community and documentation.
MT3D-USGS — where it wins
- Simulates 3D advection, dispersion, reactions and multispecies transport
- Supports MODFLOW-2005 and MODFLOW-USG workflows
- Free, open-source deployment on Windows and Linux
Where it doesn't
- Focuses on transport rather than complete groundwater-flow modeling
- Self-hosted downloadable software requires local deployment
- Support is provided through documentation channels
- FREEWAT8.7/10 · Free plan
A free, GIS-centered modeling environment spanning groundwater simulation, analysis and planning.
Visit FREEWATFull verdict → - MT3D-USGS7.5/10 · Free plan
A free, open-source 3D transport simulator for MODFLOW-based workflows.
Visit MT3D-USGSFull verdict →
FREEWAT vs MT3D-USGS: questions
Which is better for groundwater modeling software, FREEWAT or MT3D-USGS?
FREEWAT scores higher on our rubric for groundwater modeling software: 8.7 against 7.5 out of 10; our editors rank them #2 and #8.
How do FREEWAT and MT3D-USGS compare?
All 4 checks we put side by side come out level: neither leads on any.
Do FREEWAT and MT3D-USGS have a free plan?
FREEWAT: Yes. MT3D-USGS: Yes.
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- FREEWAT vs Watershed Modeling System (WMS)
- ModelMuse vs MT3D-USGS
All groundwater modeling software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
Last updated · How we research and update