Water Resources of the United States
This software and related material (data and documentation) are made available by the U.S. Geological Survey (USGS) to be used in the public interest and the advancement of science. You may, without any fee or cost, use, copy, modify, or distribute this software, and any derivative works thereof, and its supporting documentation, subject to the USGS software User's Rights Notice.
You may obtain other electronic or print versions of USGS reports and documentation that are not included with the software distributions.
Computer systems for which software distribution packages have been compiled are shown in parentheses following the software name; abbreviations used are defined as follows:
Software which has a recent release date will be annotated with one of three icons, in descending level of visual imperative.
– released in last 28 days
– released in last 56 days
– released in last 112 days
A separate web page is available listing recently updated software.