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Water Software > Groundwater Software > MODFLOW and Related Programs > MODFLOW-LGR

MODFLOW-LGR: MODFLOW-2005 with Local Grid Refinement

Overview of MODFLOW-LGR

A version of MODFLOW, called MODFLOW-LGR (for Local Grid Refinement) was developed (Mehl and Hill, 2005) to support the use of locally refined grids to simulate groundwater flow. MODFLOW-LGR allows smaller parts of a larger model domain to be refined without refining the entire model. Mehl and Hill (2007) expanded the original scope of MODFLOW-LGR to include multiple areas of refinement within a single model domain. Mehl and Hill (2010) allows rivers simulated with the Streamflow-Routing Process (SFR) to be routed through locally refined grids. The current version (2013) couples grids using the ghost-node method rather than the shared node method (Mehl and Hill, 2013). MODFLOW-LGR is integrated in the new MODFLOW-OWHM version of MODFLOW. Local grid refinement functionality is also available through MODFLOW-USG.

MODFLOW-LGR Information and Downloads

[ Image: Cover of software documentation report. ]

Software Downloads

The current release of MODFLOW-LGR is version 2.0.0

Note: Users are encouraged to read the documents that are provided in the 'doc' directory of this software distribution.

Documentation of MODFLOW-LGR

Superseded Versions

The following software is not actively supported by the USGS. The software has been superseded by the current release provided above. The software version below is provided online for historical reference only, and the files may contain outdated information or broken links.

Example Applications of MODFLOW-LGR

Examples of current USGS projects using MODFLOW-LGR include:

Point of Contact

Support is provided for correcting bugs and clarification of how MODFLOW-LGR is intended to work. Only limited assistance can be provided for applying MODFLOW-LGR to specific problems by contacting the points of contact listed below:

U.S. Geological Survey
Office of Groundwater
411 National Center
12201 Sunrise Valley Drive
Reston, VA 20192

Related USGS Software Resources

USGS computer programs related to MODFLOW-LGR include the following:

Other USGS Groundwater Software

The USGS develops groundwater RSS, water-quality, surface-water, and other water-resources software for use by the USGS in fulfilling its mission. Most of this software is available online for download at no charge.

Disclaimers and Notices

Please refer to the USGS Water Resources Software User Rights Notice for complete use, copyright, and distribution information. This software has been approved for release by the U.S. Geological Survey (USGS). Although the software has been subjected to rigorous review, the USGS reserves the right to update the software as needed pursuant to further analysis and review. No warranty, expressed or implied, is made by the USGS or the U.S. Government as to the functionality of the software and related material nor shall the fact of release constitute any such warranty. Furthermore, the software is released on condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use.

See also, USGS policy on linking to non-Federal web sites.

Note: Some or all of this information is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of the free Adobe Reader from the Adobe web site. [Link exits USGS] Visit [Link exits USGS] for free tools that allow visually impaired users to read PDF files.

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Page Last Modified: Friday, 21-Aug-2015 15:24:05 EDT