USGS - science for a changing world

Water Resources of the United States

Image of family canoeing on a lake.The USGS mission is to provide water information that benefits the Nation's citizens: Publications, data, maps, and applications software. USGS Water-Resources offices are located in every State.


Science In Your Watershed


Of Current Interest...

new: Selected Podcasts about water.

Release of Several New and Updated Programs for MODFLOW — The Office of Ground Water is pleased to announce the release of several new and updated programs for the MODFLOW ground-water model, including the new Conduit Flow Process for MODFLOW-2005.

Climate Change and Water Availability

Recent climate change publications addressing water availability issues.

Water for America Initiative

It is time for a comprehensive examination of water availabilty in the United States using what we have learned during the past thirty years and with up-to-date capabilities. Learn more...


NWISWeb Water Data

Access to water-resources data collected at approximately 1.5 million sites throughout the Nation.

Scientist taking a surface water sample

Regional Studies


Water Resources Programs


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Page Last Modified: Friday, 22-Aug-2008 11:50:35 EDT