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: October 19, 2021

Media Alert: USGS Dye-Tracing Study on the Kansas River to Aid in Protecting Water Supplies

U.S. Geological Survey scientists and partners will inject a harmless, bright red fluorescent dye into the Kansas River at Wamego, October 20 through 22, weather permitting. 

Date published: October 14, 2021

Project Underway to Identify Algal Toxins in US National Park Waterways

Scientists from the U.S. Geological Survey and National Park Service partnered on a first-of-its-kind, nationwide harmful algal bloom, or HAB, field study that began this summer and will continue over the next two years.

Date published: September 22, 2021

A Century of Watching the Colorado River

Right where the Colorado River flows into the mouth of the Grand Canyon, an inconspicuous 20-foot-high concrete tower rises from the riverbank.  

Publications

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Year Published: 2022

Post-fire temporal trends in soil-physical and -hydraulic properties and simulated runoff generation: Insights from different burn severities in the 2013 Black Forest Fire, CO, USA

Burn severity influences on post-fire recovery of soil-hydraulic properties controlling runoff generation are poorly understood despite the importance for parameterizing infiltration models. We measured soil-hydraulic properties of field-saturated hydraulic conductivity (Kfs), sorptivity (S), and wetting front potential (ψf) for four years after...

Ebel, Brian A.; Moody, John A.; Martin, Deborah A.

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Year Published: 2022

Evaluation of ELISA for the analysis of imidacloprid in biological matrices: Cross-reactivities, matrix interferences, and comparison to LC-MS/MS

Imidacloprid is among the most used pesticides worldwide and there are toxicity concerns for nontarget organisms. Accurate and sensitive methods are necessary to quantitate imidacloprid concentrations in biological matrices to better understand their fate and effects. Here we evaluated an enzyme-linked immunosorbent assay (ELISA) kit for...

Gross, Michael S.; Woodward, Emily; Hladik, Michelle

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Year Published: 2021

Influence of redox gradients on nitrate transport from the landscape to groundwater and streams

Increases in nitrogen applications to the land surface since the 1950s have led to a cascade of negative environmental impacts, including degradation of drinking water supplies, nutrient enrichment of aquatic ecosystems and contributions to global climate change. In this study, groundwater, streambed porewater, and stream sampling were used to...

Tesoriero, Anthony J.; Stratton, Laurel E.; Miller, Matthew P.