USGS Groundwater Information
New & Noteworthy
USGS in Your State
USGS Water Science Centers are located in each state.
SEAWAT: A Computer Program for Simulation of Three-Dimensional Variable-Density Ground-Water Flow and Transport
SEAWAT Version 4 Overview
SEAWAT is a generic MODFLOW/MT3DMS-based computer program designed to simulate three-dimensional variable-density groundwater flow coupled with multi-species solute and heat transport. The program has been used for a wide variety of groundwater studies including those focused on brine migration in continental aquifers as well as those focused on saltwater intrusion in coastal aquifers. SEAWAT uses the familiar structure of MODFLOW and MT3DMS. Thus, most of the commonly used pre and post-processors can be used to create SEAWAT datasets and visualize results. The MODFLOW concepts of "packages" and "processes" are retained in SEAWAT, which allows the program to work with many of the MODFLOW-related software programs, such as MODPATH, ZONEBUDGET, and parameter estimation programs. SEAWAT is a public domain computer program. The source code and software are distributed free of charge by the U.S. Geological Survey (USGS).
SEAWAT Version 4 is a replacement for SEAWAT-2000. SEAWAT-2000 users are encouraged to use this new version, even if the new features are not required for a particular application. SEAWAT Version 4 is backward compatible with datasets created for SEAWAT-2000 and, therefore, SEAWAT-2000 is no longer supported or maintained.
What's New in Version 4
SEAWAT Version 4 is the most recent SEAWAT release, and like SEAWAT-2000, Version 4 is based on MODFLOW-2000 and MT3DMS. SEAWAT Version 4 retains all of the functionality of SEAWAT-2000 and is backward compatible with SEAWAT-2000 datasets. SEAWAT Version 4 includes the following new features:
Previous SEAWAT versions are also available for download from this site; however, these versions are no longer maintained, updated, or supported. Users are encouraged to use the most recent version of SEAWAT as it may contain fixes and improvements that are not included in older versions.
SEAWAT Information and Downloads
Point of Contact
Support is provided for correcting bugs and clarification of how SEAWAT is intended to work. Only limited assistance can be provided for applying SEAWAT to specific problems by contacting the point of contact listed below:
Continued development and support of the SEAWAT program is funded by the USGS Groundwater Resources Program.
Related USGS Software Resources
Other USGS Groundwater Software
The USGS develops groundwater , 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
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. Also refer to the USGS Water Resources Software User Rights Notice for complete use, copyright, and distribution information.
Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
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. Visit https://www.adobe.com/accessibility/ for free tools that allow visually impaired users to read PDF files.