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MODFLOW 6

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PlanBilled and limitsPrice
MODFLOW 6No charge stated · No price or usage limits statedFree

As usgs.gov lists them, read 14 Nov 2026. The maker's own page has the final word.

Facts from MODFLOW 6's own pages

Audience
USGS says MODFLOW has been widely used by academics, private consultants, and government scientists. · usgs.gov, 14 Nov 2026
Energy and particle tracking
GWE simulates thermal energy transport, while PRT calculates advective particle trajectories in flowing groundwater. · usgs.gov, 14 Nov 2026
Founded
2017 · usgs.gov, 19 Oct 2026
Grid support
GWF models can use regular or unstructured grids; PRT currently supports DIS and DISV, but not DISU grids. · usgs.gov, 14 Nov 2026
Groundwater flow
The GWF model simulates three-dimensional transient groundwater flow using a generalized control-volume finite-difference approach. · usgs.gov, 14 Nov 2026
GUI and visualization
ModelMuse supports creating, running, and post-processing MODFLOW-based models; ModelViewer visualizes MODFLOW 6 grids and data in 3D. · usgs.gov, 14 Nov 2026
Legacy conversion
The distribution includes a converter for MODFLOW-2005, MODFLOW-NWT, and MODFLOW-LGR Version 2 models. · usgs.gov, 14 Nov 2026
Model coupling
Models may be independent, exchange information, or be tightly coupled in the same numerical solution. · usgs.gov, 14 Nov 2026
Model types
It includes groundwater flow, groundwater transport, groundwater energy, and particle tracking models. · usgs.gov, 14 Nov 2026
Publication and release
The cited current release is MODFLOW 6 version 6.8.2, dated October 30, 2026. · usgs.gov, 14 Nov 2026
Purpose
MODFLOW 6 is an object-oriented program and framework for supporting multiple models and types of models within one simulation. · usgs.gov, 14 Nov 2026
Related tools
The USGS identifies FloPy as a Python package for creating, running, and post-processing MODFLOW-based models. · usgs.gov, 14 Nov 2026
Solute transport
The GWT model simulates three-dimensional transport of a single solute species in flowing groundwater. · usgs.gov, 14 Nov 2026
Support contact
The listed contact is the USGS MODFLOW Team at [email protected]. · usgs.gov, 14 Nov 2026

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