USGS Science for a changing world
  Water Resources



NOTICE: July 21, 2012 13:27 USGS is deploying a new release of the USGS Water Data for the Nation web site. There are many servers that need to be updated, so the process may take a couple of days. During this time period you may see an inconsistent user interface, as some servers are updated while others are not. A subsequent email will be sent when the release is complete.

Real-time data are still available at

Other USGS websites
USGS Biology Geology Mapping Water Help! Search
USGS Water Resources
Maintainer: Questions about this site
Department of the Interior, U.S. Geological Survey
Privacy Statement and Disclaimer