GMS:MODFLOW

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MODFLOW
Model Info
Model type 3D, cell-centered finite-difference, saturated flow model, steady state and transient analysis
Supported versions MODFLOW-88*, MODFLOW-96*, MODFLOW-2000, MODFLOW-2005, MODFLOW-NWT, MODFLOW-LGR, MODFLOW-USG
* import only
Developer USGS, [1]
Documentation

MF2K Flow Process
MF2005 Flow Process
MF NWT
MF-LGR
MF-LGR-mult
MF-LGR-SFR

MODFLOW-USG
Tutorials MODFLOW Tutorials
Packages

Flow: BCF6, HUF, LPF, UPW
Solvers: DE4, GMG, NWT, PCG, SAMG, SIP, SOR

Other: BAS6, CHD1, CLN,DRN1, DRT1, EVT1, ETS1, GAGE, GHB1, GNC, HFB1, HUF, LAK3, MNW1, MNW2, OUT1, RCH1, RIV1, SFR2, STR1, SUB1, SWI2, WEL1, UZF1

MODFLOW
Pre-processing
MODFLOW Commands
Building a MODFLOW Model
Map to MODFLOW
Calibration
Packages Supported in GMS
Saving a MODFLOW Simulation
Importing MODFLOW Files
Unsupported MODFLOW Features
Post-processing
MODFLOW Display Options
MODFLOW Post-Processing Viewing Options
Reading a MODFLOW Simulation
Tutorials
MODFLOW Tutorials
Packages
Flow: BCF6, HUF, LPF, UPW
Solvers:

DE4, GMG, NWT, PCG,

PCGN, LMG, SIP, SOR,

SMS
Other:

BAS6, BFH, CHD1, CLN,

DRN1, DRT1, EVT1, ETS1,

GAGE, GHB1, GNC, HFB1,

HUF, LAK3, MNW1, MNW2,

OUT1, RCH1, RIV1, SFR2,

STR1, SUB1, SWI2, WEL1,

UZF1

GMS includes a comprehensive graphical interface to the groundwater model MODFLOW. MODFLOW (originally called the Modular Three-Dimensional Finite-Difference Ground-Water Flow Model) is a 3D, cell-centered, finite difference, saturated flow model developed by the United States Geological Survey (McDonald & Harbaugh, 1988). MODFLOW can perform both steady state and transient analyses and has a wide variety of boundary conditions and input options. In GMS, MODFLOW can work with the 3D Grid module and 3D UGrid module.

GMS supports MODFLOW as a pre- and post-processor. The input data for MODFLOW are generated by GMS and saved to a set of files. These files are read by MODFLOW when MODFLOW is launched from the MODFLOW menu. The output from MODFLOW is then imported to GMS for post-processing.

A special version of MODFLOW is distributed with GMS. This version of MODFLOW is the same as the version distributed by the USGS except for a few minor changes primarily related to file input including reading input data from HDF5 files. These changes are clearly marked in the code. For more information see MODFLOW with HDF5.

To learn more about using MODFLOW in GMS, please refer to the available tutorials.

More information about MODFLOW is available from the USGS.

The MOFLOW model is included with all editions of GMS, including the community version.

MODFLOW Versions

GMS supports all standard MODFLOW versions. For a list of input files and packages supported in each version see here.

Pre-Processing

Post-Processing

MODFLOW Documentation