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

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.

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Message from the Associate Director for Water

Message from the Associate Director for Water

Learn more about the WMA from Dr. Don Cline, the Associate Director for Water Resources.

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Popular 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 Water Dashboard

Water Quality Portal

National Groundwater Monitoring Network Data Portal

Groundwater Watch

MODFLOW

StreamStats

More data and tools

News

Date published: July 27, 2021

Newly Installed Super Gauge Helps USGS Monitor Water Quality, Bacteria Levels in Lower Anacostia River

Washington - A newly installed U.S. Geological Survey “super gauge” will provide people in the Washington area near real time information on bacteria levels and other water quality information for a portion of the Lower Anacostia River.

Date published: July 24, 2021

Great Salt Lake Reaches New Historic Low

The southern portion of the Great Salt Lake is at a new historic low, with average daily water levels dropping about an inch below the previous record set in 1963, according to U.S. Geological Survey information collected at the SaltAir gauge location.  

Date published: July 16, 2021

Great Salt Lake May Reach Historic Low Soon

The southern portion of the Great Salt Lake is just a couple inches above the historic low measurement taken in 1963, according to U.S. Geological Survey streamgage information collected at the SaltAir gauge location.  

Publications

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Year Published: 2021

Quality of groundwater used for domestic supply in the northern San Joaquin Valley, California

Groundwater provides more than 40 percent of California’s drinking water. To protect this vital resource, the State of California created the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The Priority Basin Project (PBP) of the GAMA Program provides a comprehensive assessment of the State’s groundwater quality and provides...

Levy, Zeno F.; Balkan, Mariia; Shelton, Jennifer L.
Levy, Z.F., Balkan, M., and Shelton, J.L., 2021, Quality of groundwater used for domestic supply in the northern San Joaquin Valley, California: U.S. Geological Survey Fact Sheet 2021-3040, 4 p., https://doi.org/10.3133/fs20213040.

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Year Published: 2021

Peak-flow variability, peak-flow informational needs, and consideration of regional regression analyses in managing the crest-stage gage network in Montana

The U.S. Geological Survey (USGS), in cooperation with the Montana Department of Transportation (MDT), has operated a crest-stage gage (CSG) network in Montana to collect peak-flow data since 1955. The CSG network is vital to collecting peak-flow data on small drainage basins that typically are not addressed by continuous streamflow operations....

Sando, Steven K.
Sando, S.K., 2021, Peak-flow variability, peak-flow informational needs, and consideration of regional regression analyses in managing the crest-stage gage network in Montana: U.S. Geological Survey Scientific Investigations Report 2021–5063, 124 p., https://doi.org/10.3133/sir20215063.

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Year Published: 2021

Water priorities for the Nation—USGS Integrated Water Science basins

The United States faces growing challenges to its water supply, infrastructure, and aquatic ecosystems because of population growth, climate change, floods, and droughts. To help address these challenges, the U.S. Geological Survey Water Resources Mission Area is integrating recent advances in monitoring, research, and modeling to improve...

Miller, Mark P.; Eberts, Sandra M.; Sprague, Lori A.
Attribution: Water Resources
Miller, M.P., Eberts, S.M., and Sprague, L.A., 2021, Water priorities for the Nation—USGS Integrated Water Science basins: U.S. Geological Survey Fact Sheet 2021–3041, 2 p., https://doi.org/10.3133/fs20213041.