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...

Man-Made Chemicals Found in Drinking Water at Low Levels: Low levels of man-made chemicals remain in public water supplies after being treated in selected community water facilities. Most of the chemicals assessed are not required to be regulated, monitored or removed.

Selected Podcasts about water.

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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