USGS Groundwater Information
New & Noteworthy
USGS in Your State
USGS Water Science Centers are located in each state.
Notice: This page refers to a legacy product that is no longer maintained by USGS. USGS no longer updates this page, but it may be useful as a reference or resource.
Type curves for selected problems of flow to wells in confined aquifers
The FORTRAN source code for the programs documented in Reed (1980) is available for download. The source code for all the programs is contained in one single text file ("Reed_typcurves_TWRI_3_B3.txt"). These programs are no longer supported by the USGS but are being made available because they may be of use to individuals who want to reuse them in the analysis of aquifer tests. The source code is distributed free of charge by the U.S. Geological Survey.
Information and Downloads
Point of Contact
U.S. Geological Survey Office of Groundwater
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.
Software License and Purchase Information
This software is a product of the U.S. Geological Survey, which is part of the U.S. Government.
This software is freely distributed. There is no fee to download and (or) use this software.
Users do not need a license or permission from the USGS to use this software. Users can download and install as many copies of the software as they need.
As a work of the United States Government, this USGS product is in the public domain within the United States. You can copy, modify, distribute, and perform the work, even for commercial purposes, all without asking permission. Additionally, USGS waives copyright and related rights in the work worldwide through CC0 1.0 Universal Public Domain Dedication (https://creativecommons.org/publicdomain/zero/1.0/ ).
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