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
USGS Program Tackles Complex Water Questions
The U.S. Geological Survey has chosen the Illinois River Basin as the next watershed to be studied by its scientists as part of a large-scale effort to better understand the nation’s water systems.
USGS Unveils Mobile Flood Tool for the Nation
The U.S. Geological Survey announced Friday the completion of a new mobile tool that provides real-time information on water levels, weather and flood forecasts all in one place on a computer, smartphone or other mobile device.
Common insecticide is more harmful to aquatic ecosystems than previously thought
The insecticide fipronil and some of the compounds it degrades to are more toxic to aquatic insects, such as mayflies and stoneflies, than previously estimated, reports a new study from the USGS Regional Stream Quality Assessment.