The develop branch of the MODFLOW 6 repository contains bug fixes and new functionality that may be incorporated into the next approved MODFLOW 6 release. Each night, at 2 AM UTC, Fortran source code from the development branch is compiled for Windows, MacOS, and Ubuntu 18.04.4 LTS using gfortran. The binary executables released here represent release candidates for the next approved version of MODFLOW 6 but are considered preliminary or provisional.
The compiled codes for the latest nightly build are available as operating specific release assets (win64.zip, mac.zip, and linux.zip). Each operating specific release asset includes:
- mf6 (MODFLOW 6)
- mf5to6 (the MODFLOW 5 to 6 converter)
- zbud6 (the zone budget utility for MODFLOW 6)
- libmf6.dll or libmf6.so (a dynamic-linked library or shared object version of MODFLOW 6)
Each release also includes a copy of the 'MODFLOW 6 – Description of Input and Output' document (mf6io.pdf) for the latest MODFLOW 6 release candidate.
Release tags are based on the date (YYYYMMDD) the MODFLOW 6 codes were compiled and the release was made. Previous nightly build releases are retained for 30 days in the event that there are issues with the latest release candidate.
It may be necessary to have gfortran installed locally in order to use the compiled MODFLOW 6 executables, dynamic-linked libraries, and shared objects available in the operating specific release assets associated with the latest and previous release candidates. Additional information on the version of gfortran used to compile the MODFLOW 6 executables, dynamic-linked libraries, and shared objects is provided with each release.
This software is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The software has not received final approval by the U.S. Geological Survey (USGS). 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. The software is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the software.