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Think you know about hurricanes? Take our pop quiz!

The USGS celebrates Hurricane Preparedness Week

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U.S. River Conditions, January to March 2022

New data visualization shows low- and high-flow events across the U.S. during the first months of 2022

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Willamette River Basin selected as 4th Integrated Water Science Basin

Studies in this Pacific Northwest basin will advance the science used to manage water for the diverse needs of major cities, fertile agriculture, and ecologically important species

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Increasing radium in groundwater potentially related to road salt application

New report connects increasing salinity to increasing radium concentrations in low-pH aquifer

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Rivers in the sky: 6 facts you should know about atmospheric rivers

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Looking for current water conditions?

The National Water Dashboard is an interactive, mobile-friendly tool that provides real-time water, weather, and flood information all in one place

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We're One USGS Water

Together with Science Centers and Regions across the Nation

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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

Current streamflow conditions map

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

Photo of Don Cline

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.

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News

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New one-stop shop webpage for all things Great Salt Lake

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Media Advisory: Public and media invited to view helicopter and survey equipment for Delaware Bay study

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Determining how high floodwaters reached helps communities prepare for future floods

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Publications

Using microbial source tracking to identify fecal contamination sources in South Oyster Bay on Long Island, New York

The U.S. Geological Survey worked in cooperation with the New York State Department of Environmental Conservation to assess the potential sources of fecal contamination entering South Oyster Bay, a shallow embayment on the southern shore of Long Island, New York. Water samples are routinely collected by the New York State Department of Environmental Conservation in the bay and analyzed for fecal c
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Water Resources, New York Water Science Center

Deciphering natural and anthropogenic nitrate and recharge sources in arid region groundwater

Recently, the subsoils of ephemeral stream (arroyos) floodplains in the northern Chihuahuan Desert were discovered to contain large naturally occurring NO3− reservoirs (floodplain: ~38,000 kg NO3-N/ha; background: ~60 kg NO3-N/ha). These reservoirs may be mobilized through land use change or natural stream channel migration which makes differentiating between anthropogenic and natural groundwater
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Water Resources, New Mexico Water Science Center

Hydrogeologic framework, water levels, and selected contaminant concentrations at Valmont TCE Superfund Site, Luzerne County, Pennsylvania, 2020

The Valmont TCE Superfund Site, Luzerne County, Pennsylvania is underlain by fractured and folded sandstones and shales of the Pottsville and Mauch Chunk Formations, which form a fractured-rock aquifer recharged locally by precipitation. Industrial activities at the former Chromatex Plant resulted in trichloroethene (TCE) contamination of groundwater at and near the facility, which was identified
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Water Resources, New Jersey Water Science Center, Pennsylvania Water Science Center
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Science

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View of Dos Bocas reservoir, Utuado, PR

Puerto Rico Natural Hazards: Water Resources | Peligros naturales de Puerto Rico: Recursos de agua

The USGS monitors and studies water resources to deliver a wide range of data including streamflow conditions, groundwater information, lake and reservoir elevation, water quality, water use, and water availability, which can be accessed through the USGS National Water Dashboard. As of 2022, the USGS real-time water data network is comprised of 109 streamflow observation stations, 20 groundwater...
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Natural Hazards, Water Resources, Natural Hazards
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Puerto Rico Natural Hazards: Water Resources | Peligros naturales de Puerto Rico: Recursos de agua

The USGS monitors and studies water resources to deliver a wide range of data including streamflow conditions, groundwater information, lake and reservoir elevation, water quality, water use, and water availability, which can be accessed through the USGS National Water Dashboard. As of 2022, the USGS real-time water data network is comprised of 109 streamflow observation stations, 20 groundwater...
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Lake Koocanusa

Describing the Water Quality of Lake Koocanusa (Koocanusa Reservoir)

Lead Researchers: Travis Schmidt and Chris Mebane Project Manager: Melissa Schaar
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Water Resources, Wyoming-Montana Water Science Center
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Describing the Water Quality of Lake Koocanusa (Koocanusa Reservoir)

Lead Researchers: Travis Schmidt and Chris Mebane Project Manager: Melissa Schaar
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Image Collage of Landsat, pollinator, and volcanologist

Next Generation Stream Gaging

USGS scientists and partners have developed and deployed a low-cost, low-power stream gage system that could meet California’s next generation water needs. The system is now in experimental deployment in Sonoma County, addressing post-wildfire runoff threats and is being developed for the Upper Feather River watershed in northern California - a primary source of the state's water supply. This...
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Water Resources, California Water Science Center, National Innovation Center
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Next Generation Stream Gaging

USGS scientists and partners have developed and deployed a low-cost, low-power stream gage system that could meet California’s next generation water needs. The system is now in experimental deployment in Sonoma County, addressing post-wildfire runoff threats and is being developed for the Upper Feather River watershed in northern California - a primary source of the state's water supply. This...
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