flopy 3.10.0

FloPy is a Python package to create, run, and post-process MODFLOW-based models

Introduction

FloPy includes support for MODFLOW 6, MODFLOW-2005, MODFLOW-NWT, MODFLOW-USG, and MODFLOW-2000. Other supported MODFLOW-based models include MODPATH (version 6 and 7), MT3DMS, MT3D-USGS, and SEAWAT.

For general modeling issues, please consult a modeling forum, such as the MODFLOW Users Group. Other MODFLOW resources are listed in the MODFLOW Resources section.

Documentation

Documentation is available on Read the Docs and includes information on FloPy; tutorials for using FloPy with MODFLOW 6 and previous versions of MODFLOW, MT3DMS, MT3D-USGS, MODPATH, and ZONEBUDGET; and code documentation.

Contributing

Bug reports, code contributions, or improvements to the documentation are welcome from the community. Prior to contributing, please read up on our guidelines for contributing and then check out one of our issues in the hotlist: community-help.

How to Cite

Citation for FloPy:

Bakker, Mark, Post, Vincent, Langevin, C. D., Hughes, J. D., White, J. T., Starn, J. J. and Fienen, M. N., 2016, Scripting MODFLOW Model Development Using Python and FloPy: Groundwater, v. 54, p. 733–739, doi:10.1111/gwat.12413.

Software/Code citation for FloPy:

Bakker, Mark, Post, Vincent, Hughes, J. D., Langevin, C. D., White, J. T., Leaf, A. T., Paulinski, S. R., Bellino, J. C., Morway, E. D., Toews, M. W., Larsen, J. D., Fienen, M. N., Starn, J. J., Brakenhoff, D. A., and Bonelli, W. P., 2026, FloPy v3.10.0: U.S. Geological Survey Software Release, 06 February 2026, https://doi.org/10.5066/F7BK19FH License

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