Groundwater and Streamflow Information Program
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The Groundwater and Streamflow Information Program (GWSIP) serves as the national source of impartial, timely, rigorous, and relevant data for short- and long-term water decisions by stakeholders across the United States. In 2018, the USGS began piloting the Nation’s Next Generation Water Observing System (NGWOS) that will provide high-fidelity, real-time data on water quantity and quality.
Streamflow Conditions
The new, interactive National Water Dashboard provides real-time water, weather, and flood information all in one place.
NWDGroundwater Conditions
Groundwater Watch displays real-time, recent, and historical groundwater data and statistics from wells and springs across the United States.
Groundwater WatchGWSIP Quick Links
Explore some of our most popular data, tools, and science:
News
Large Decreases in Upper Colorado River Salinity Since 1929
Salinity levels in the Upper Colorado River Basin, which covers portions of Wyoming, Colorado, Utah, Arizona and New Mexico, have steadily decreased since 1929, according to a new U.S. Geological Survey study analyzing decades of water-quality measurements.
USGS Dye-Tracing Study on the Kansas River to Aid in Protecting Water Supplies
The U.S. Geological Survey and partners will inject a harmless, bright red fluorescent dye into the Kansas River at Eudora on March 31, weather permitting.
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.
Publications
Guidelines for determining flood flow frequency—Bulletin 17C
Accurate estimates of flood frequency and magnitude are a key component of any effective nationwide flood risk management and flood damage abatement program. In addition to accuracy, methods for estimating flood risk must be uniformly and consistently applied because management of the Nation’s water and related land resources is a collaborative...
England, John F.; Cohn, Timothy A.; Faber, Beth A.; Stedinger, Jery R.; Thomas, Wilbert O.; Veilleux, Andrea G.; Kiang, Julie E.; Mason,, Robert R.
Predicting attenuation of salinized surface- and groundwater-resources from legacy energy development in the Prairie Pothole Region
Oil and gas (energy) development in the Williston Basin, which partly underlies the Prairie Pothole Region in central North America, has helped meet U.S. energy demand for decades. Historical handling and disposal practices of saline wastewater co-produced during energy development resulted in salinization of surface and groundwater at numerous...
Preston, Todd M.; Anderson, Chauncey W.; Thamke, Joanna N.; Hossack, Blake R.; Skalak, Katherine; Cozzarelli, Isabelle M. Characterizing groundwater/surface-water interaction using hydrograph-separation techniques and groundwater-level data throughout the Mississippi Delta, USA
The Mississippi Delta, located in northwest Mississippi, is an area dense with industrial-level agriculture sustained by groundwater-dependent irrigation supplied by the Mississippi River Valley Alluvial aquifer (alluvial aquifer). The Delta provides agricultural commodities across the United States and around the world. Observed declines in...
Killian, Courtney D.; Asquith, William H.; Barlow, Jeannie R. B.; Bent, Gardner C.; Kress, Wade; Barlow, Paul M.; Schmitz, Darrel W.