Version 1.1.0 provides support for using MT3D-USGS with structured MODFLOW 6 grids. That is, the 'DIS6' file type must be invoked in the MODFLOW 6 name file. Interested users are referred to the Input_Instructions.pdf document for more information. Please refer to the section titled "Notes on FT6 Option Starting with Version 1.1.0".
A few bug fixes included with this release, please refer to "Release.txt" in the docs folder of the git repository (also distributed with the zip file released on the USGS groundwater software webpage) for more information on fixed bugs.
Bedekar, V., Morway, E.D., Langevin, C.D., and Tonkin, M., 2016, MT3D-USGS version 1.0.0: Groundwater Solute Transport Simulator for MODFLOW: U.S. Geological Survey Software Release, 30 September 2016, http://dx.doi.org/10.5066/F75T3HKD
Visit the USGS "Water Resources Groundwater Software" site for information on MT3D-USGS and related software: https://water.usgs.gov/software/lists/groundwater
Visit the MT3D-USGS homepage at: https://water.usgs.gov/ogw/mt3d-usgs/