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Head-to-head · Groundwater Modeling Software

PFLOTRAN vs MT3D-USGS

  • Updated Nov 2026
  • Both researched from official sources
  • 3 checks side by side
Higher score PFLOTRAN #5 in Groundwater Modeling Software 8.0/10 Open source ✓ 1 of 3 features Visit PFLOTRAN
MT3D-USGS #8 in Groundwater Modeling Software 7.5/10 Free plan Free plan✓ 2 of 3 features Visit MT3D-USGS

PFLOTRAN leads on 0 checks, MT3D-USGS on 0, and 3 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scorePFLOTRAN · 8.0/10
  • Free planonly MT3D-USGS
  • Most featuresMT3D-USGS · 2 of 3

PFLOTRAN scores higher on our rubric for groundwater modeling software: 8.0 against 7.5 out of 10; our editors rank them #5 and #8.

On flow modeling method, PFLOTRAN gives you Other where MT3D-USGS offers Finite-difference.

PFLOTRAN is the better fit for large-scale reactive transport and fractured media. MT3D-USGS is the better fit for 3D multispecies transport with MODFLOW workflows.

  • PFLOTRAN fits best

    Large-scale reactive transport and fractured media

  • MT3D-USGS fits best

    3D multispecies transport with MODFLOW workflows

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Side by side

Feature PFLOTRAN 8.0/10 Visit ↗ MT3D-USGS 7.5/10 Visit ↗
At a glance
Editor score 8.0 7.5
Ranking #5 in Groundwater Modeling Software #8 in Groundwater Modeling Software
Best for Large-scale reactive transport and fractured media 3D multispecies transport with MODFLOW workflows
Pricing model Free Free
Starting price Open source Free plan
Free plan Not checked yet ✓ (best)
Free trial — —
Deployment Self-hosted Self-hosted
Platforms Linux Windows, Linux
Support Docs Docs
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features PFLOTRAN 1/3 · MT3D-USGS 2/3
Transport modeling ✓ ✓
Surface-water coupling Not checked yet ✓ (best)
GIS data exchange Not checked yet Not checked yet
Specs
Flow modeling method Other Finite-difference
Model dimensions 3d 3d
Supported platforms Linux Windows, Linux
Our review
Pros
  • Combines groundwater flow with reactive transport and geochemical reactions
  • Parallel execution supports large-scale scientific simulations
  • Models both porous and fractured subsurface media
  • Simulates 3D advection, dispersion, reactions and multispecies transport
  • Supports MODFLOW-2005 and MODFLOW-USG workflows
  • Free, open-source deployment on Windows and Linux
Cons
  • Linux is the only listed platform
  • Self-hosted deployment requires managing the computing environment
  • Documentation is the listed support channel
  • Focuses on transport rather than complete groundwater-flow modeling
  • Self-hosted downloadable software requires local deployment
  • Support is provided through documentation channels
Our verdict

PFLOTRAN is an open-source simulation code for subsurface groundwater flow and reactive transport. It is aimed at researchers and technical teams constructing numerical models of groundwater movement, dissolved chemical species, 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 →
  1. PFLOTRANGroundwater Modeling Software 8.0Open source
  2. MT3D-USGSGroundwater Modeling Software 7.5Free plan

Strengths and trade-offs

  • PFLOTRAN — where it wins

    • Combines groundwater flow with reactive transport and geochemical reactions
    • Parallel execution supports large-scale scientific simulations
    • Models both porous and fractured subsurface media

    Where it doesn't

    • Linux is the only listed platform
    • Self-hosted deployment requires managing the computing environment
    • Documentation is the listed support channel
  • 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

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

Last updated · How we research and update