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Notice: This page refers to a legacy product that is no longer maintained by USGS.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
Please refer to the USGS Water Resources Software User Rights Notice for complete use, copyright, and distribution information. 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.
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 http://www.adobe.com/accessibility/ for free tools that allow visually impaired users to read PDF files.