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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

Microbial community response to a bioaugmentation test to degrade trichloroethylene in a fractured rock aquifer, Trenton, N.J

Bioaugmentation is a promising strategy for enhancing trichloroethylene (TCE) degradation in fractured rock. However, slow or incomplete biodegradation can lead to stalling at degradation byproducts such as 1,2-dichloroethene (cis-DCE) and vinyl chloride (VC). Over the course of 7 years, we examined the response of groundwater microbial populations in a bioaugmentation test where an emulsified veg
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Water Resources, New Jersey Water Science Center, Geology, Energy & Minerals Science Center

Bedrock depth influences spatial patterns of summer baseflow, temperature and flow disconnection for mountainous headwater streams

In mountain headwater streams, the quality and resilience of summer cold-water habitat is generally regulated by stream discharge, longitudinal stream channel connectivity and groundwater exchange. These critical hydrologic processes are thought to be influenced by the stream corridor bedrock contact depth (sediment thickness), a parameter often inferred from sparse hillslope borehole information,
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Ecosystems, Water Resources, Eastern Ecological Science Center, New England Water Science Center, Washington Water Science Center

Sediment and nutrient retention on a reconnected floodplain of an Upper Mississippi River tributary, 2013–2018

The connection of rivers with their floodplains has been greatly reduced in agricultural drainage basins, especially in the Upper Mississippi River Basin. The restriction of the Mississippi River from its floodplain has reduced the sediment trapping and nutrient deposition capabilities of the floodplain, exacerbating water quality problems in the river and in downstream waterbodies. A small part o
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Water Resources, Ecosystems, Central Midwest Water Science Center, Upper Midwest Environmental Sciences 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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