Mission Areas
Water Resources
Water information is fundamental to national and local economic well-being, protection of life and property, and effective management of the Nation’s water resources. The USGS works with partners to monitor, assess, conduct targeted research, and deliver information on a wide range of water resources and conditions including streamflow, groundwater, water quality, and water use and availability.
USGS Water Data for the Nation
Surface-water, groundwater, water-quality, and water-use data collected at approximately 1.9 million sites across all 50 states.
Get dataMessage from the Associate Director for Water
Learn more about the WMA from Dr. Don Cline, the Associate Director for Water Resources.
ReadPopular Water Data and Tools
Explore our science by the topical areas that drive the research and projects conducted by our Programs.
USGS Water Data for the Nation
National Groundwater Monitoring Network Data Portal
More data and toolsNews
The USGS is Ready to Respond During the 2020 Atlantic Hurricane Season
The 2020 Atlantic hurricane season starts June 1, and the U.S. Geological Survey is prepared to provide science that can help guide efforts to protect lives and property if a major storm makes landfall this season.
USGS Crews Measure Major Flooding in Lower Michigan
U.S. Geological Survey field crews are measuring record flooding on the Tittabawassee River in Midland, Michigan, following a heavy rainfall event.
A comprehensive assessment of fluoride in groundwater
Fluoride occurs commonly in groundwater used for drinking, but typically at concentrations less than the drinking-water standard for human health, reports a new study by the U.S. Geological Survey. In fact, fluoride concentrations in most drinking-water wells sampled were below the optimal concentration recommended to prevent tooth...
Publications
Regional hydrostratigraphic framework of Joint Base McGuire-Dix-Lakehurst and vicinity, New Jersey, in the context of perfluoroalkyl substances contamination of groundwater and surface water
A study was conducted by the U.S. Geological Survey, in cooperation with the U.S. Air Force, to describe the regional hydrostratigraphy of shallow aquifers and confining units underlying Joint Base McGuire-Dix-Lakehurst (JBMDL) and vicinity, New Jersey, in the context of contamination of groundwater and surface water by per- and polyfluoroalkyl...
Fiore, Alex R.
Methods of collection and quality assessment of arsenic data in well-water supplies in Maine, 2001–2 and 2006–7
The U.S. Geological Survey, in cooperation with the U.S. Centers for Disease Control and Prevention and the Maine Center for Disease Control and Prevention, assessed the chemical characteristics and the occurrence, distribution, and oxidation state of inorganic arsenic in drinking water from selected domestic well-water supplies in Maine in 2001–2...
Culbertson, Charles W.; Caldwell, James M.; Schalk, Luther F.; Manassaram, Deana; Backer, Lorraine C.; Smith, Andrew E.
Statistical methods in water resources
This text began as a collection of class notes for a course on applied statistical methods for hydrologists taught at the U.S. Geological Survey (USGS) National Training Center. Course material was formalized and organized into a textbook, first published in 1992 by Elsevier as part of their Studies in Environmental Science series. In 2002, the...
Helsel, Dennis R.; Hirsch, Robert M.; Ryberg, Karen R.; Archfield, Stacey A.; Gilroy, Edward J.