MODFLOW 6 vs FREEWAT

MODFLOW 69.3Visit FREEWAT8.7Visit

Higher score MODFLOW 6 #1 in Groundwater Modeling Software 9.3/10 Free plan Free plan✓ 2 of 3 features Visit USGS

vs

FREEWAT #2 in Groundwater Modeling Software 8.7/10 Free plan Free plan✓ 3 of 3 features Visit FREEWAT

• MODFLOW 6 fits best

  Broad groundwater-flow and coupled-transport modeling

• FREEWAT fits best

  GIS-centered modeling and water-management workflows

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Side by side

Feature	MODFLOW 6 9.3/10 Visit ↗	FREEWAT 8.7/10 Visit ↗
At a glance
Editor score	9.3	8.7
Ranking	#1 in Groundwater Modeling Software	#2 in Groundwater Modeling Software
Best for	Broad groundwater-flow and coupled-transport modeling	GIS-centered modeling and water-management workflows
Pricing model	Free	Free
Starting price	Free plan	Free plan
Free plan	✓	✓
Free trial	—	—
Deployment	Self-hosted	Desktop
Platforms	Windows, Linux, macOS	Windows, Linux
Support	Email	Community, Docs
Built for	Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features MODFLOW 6 2/3 · FREEWAT 3/3
Transport modeling	✓	✓
Surface-water coupling	✓	✓
GIS data exchange	Not checked yet	✓ (best)
Specs
Flow modeling method	Finite-difference	Not checked yet
Model dimensions	3d	Not checked yet
Supported platforms	Not checked yet	Windows, Linux (macOS via Windows/Linux virtual machine)
Our review
Pros	Models 3D transient groundwater flow, solute transport, and thermal transport Couples multiple models, including groundwater and surface-water flow Supports regular and unstructured grids on Windows, Linux, and macOS	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.
Cons	Self-hosted deployment requires users to manage their own environment No AI features are included Email is the listed support channel	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.
Our verdict	MODFLOW 6 is an object-oriented hydrologic simulation program developed by the U.S. Geological Survey. It is intended for groundwater modelers, including academics, consultants, and government scientists, who need to represent… Read the review →	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 →

Strengths and trade-offs

• MODFLOW 6 — where it wins

  • Models 3D transient groundwater flow, solute transport, and thermal transport
  • Couples multiple models, including groundwater and surface-water flow
  • Supports regular and unstructured grids on Windows, Linux, and macOS

  Where it doesn't

  • Self-hosted deployment requires users to manage their own environment
  • No AI features are included
  • Email is the listed support channel

• 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.

• MODFLOW 69.3/10 · Free plan

  A free, open-source model for 3D groundwater flow, transport, and coupled simulations.

  Visit USGSFull verdict →
• FREEWAT8.7/10 · Free plan

  A free, GIS-centered modeling environment spanning groundwater simulation, analysis and planning.

  Visit FREEWATFull verdict →