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Groundwater and Streamflow Information Program

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The Groundwater and Streamflow Information Program (GWSIP) is one of four Water Investigations Programs funded by Congress to identify, measure, and assess the Nation’s water resources. The GWSIP is the principal USGS Program for monitoring groundwater and streamflow, including floods and droughts, related to groundwater resources at the regional/national scales.

USGS Current Daily Streamflow Conditions

USGS Current Daily Streamflow Conditions

Real-Time Streamflow

Groundwater Watch

Groundwater Watch

Groundwater Watch

News

Photo of Flooding on Mississippi River in December 2015
October 13, 2016

An assessment of the flooding that occurred in the Meramec River Basin from December 2015–January 2016 is available in a new report from the U.S. Geological Survey. The report includes peak stages and streamflows, historical comparisons and flood-frequency statistics from the record flood.

Photo of the Colorado River near Moab, Utah
August 15, 2016

Future groundwater replenishment in the Upper Colorado River Basin may benefit from projected increases in future basin-wide precipitation under current climate projections, according to a recent study by the U.S. Geological Survey and Bureau of Reclamation.

USGS: Science for a changing world
August 11, 2016

Two new streamgages recently installed by the U.S. Geological Survey in the cities of Greenfield and Elwood, Indiana will provide continuous, real-time streamflow and water level information in areas that have demonstrated a need for reliable flood warning and flood-related data.  

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National Groundwater Awareness Week
April 20, 2016

Science to discover and describe the location, condition, and behavior of water in the ground.

USGS science for a changing world logo
March 12, 2016

These assessments will document the effects of human activities on water levels, groundwater storage, and discharge to streams and other surface-water bodies; explore climate variability impacts on the regional water budget; and evaluate the adequacy of data networks to assess impacts at a regional scale.

USGS science for a changing world logo
March 12, 2016

At the core of NSIP will be a set of USGS-funded streamgages strategically positioned across the country that are continuously operated to fulfill five Federal needs for streamflow information. These will be a permanent set of core streamgages from which streamflow information would be delivered in real time, uncompromised by changing support from funding partners.

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USGS science for a changing world logo
March 12, 2016

Groundwater Level Data

Measurements of groundwater levels from wells are used to monitor changes in groundwater conditions due to climate variability and withdrawals (pumping). The GWRP has supported the development of a Groundwater Climate-Response Network, a network of wells selected to illustrate the response of the groundwater system to climate variations nationwide.

USGS science for a changing world logo
March 12, 2016

Geophysical Methods & Applications

USGS conducts research into new and emerging geophysical methods and applications for groundwater investigations. Near-surface geophysical techniques can be used to rapidly and effectively characterize the shallow subsurface and to monitor hydrologic and remediation processes in ways not previously possible with standard technology.

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 The effect of lithology on valley width, terrace distribution, and coarse sediment provenance in a tectonically stable catchment with flat-lying stratigraphy
Year Published: 2017

The effect of lithology on valley width, terrace distribution, and coarse sediment provenance in a tectonically stable catchment with flat-lying stratigraphy

How rock resistance or erodibility affects fluvial landforms and processes is an outstanding question in geomorphology that has recently garnered attention owing to the recognition that the erosion rates of bedrock channels largely set the pace of landscape evolution. In this work, we evaluate valley width, terrace distribution, and sediment...

Amanda Keen-Zebert; Hudson, Mark R.; Stephanie L. Shepherd; Evan A. Thaler
Keen-Zebert, A., Hudson, M.R., Shepherd, S.L., and Thaler, E., 2017, The effect of lithology on valley width, terrace distribution, and coarse sediment provenance in a tectonically stable catchment with flat-lying stratigraphy: Earth Surface Processes and Landforms, doi:10.1002/esp.4116.
Geospatial analysis identifies critical mineral-resource potential in Alaska
Year Published: 2017

Geospatial analysis identifies critical mineral-resource potential in Alaska

Alaska consists of more than 663,000 square miles (1,717,000 square kilometers) of land—more than a sixth of the total area of the United States—and large tracts of it have not been systematically studied or sampled for mineral-resource potential. Many regions of the State are known to have significant mineral-resource potential, and there are...

Karl, Susan; Labay, Keith
Karl, S.M., and Labay, K.A., Geospatial analysis identifies critical mineral-resource potential in Alaska: U.S. Geological Survey Fact Sheet 2017–3012, 4 p., https://doi.org/10.3133/fs20173012.
Regional patterns of Mesozoic-Cenozoic magmatism in western Alaska revealed by new U-Pb and 40Ar/39Ar ages: Chapter D in Studies by the U.S. Geological Survey in Alaska, vol. 15
Year Published: 2017

Regional patterns of Mesozoic-Cenozoic magmatism in western Alaska revealed by new U-Pb and 40Ar/39Ar ages: Chapter D in Studies by the U.S. Geological Survey in Alaska, vol. 15

In support of regional geologic framework studies, we obtained 50 new argon-40/argon-39 (40Ar/39Ar) ages and 33 new uranium-lead (U-Pb) ages from igneous rocks of southwestern Alaska.

Bradley, Dwight C.; Miller, Marti L.; Friedman, Richard M.; Layer, Paul W.; Bleick, Heather A.; Jones, III, James V.; Box, Steven E.; Karl, Susan M.; Shew, Nora B.; White, Timothy S.; Till, Alison B.; Dumoulin, Julie A.; Bundtzen, Thomas K.; O'Sullivan, Paul B.; Ullrich, Thomas D.
Bradley, D.C., Miller, M.L., Friedman, R.M., Layer, P.W., Bleick, H.A., Jones, J.V., III, Box, S.E., Karl, S.M., Shew, N.B., White, T.S., Till, A.B., Dumoulin, J.A., Bundtzen, T.K., O’Sullivan, P.B., and Ullrich, T.D., 2017, Regional patterns of Mesozoic-Cenozoic magmatism in western Alaska revealed by new U-Pb and <sup>40</sup>Ar/<sup>39</sup>Ar ages, in Dumoulin, J.A., ed., Studies by the U.S. Geological Survey in Alaska, vol. 15: U.S. Geological Survey Professional Paper 1814–D, 48 p., https://doi.org/10.3133/pp1814D.
Geochemical and geochronologic data from the Hall Creek caldera, Toiyabe Range, Nevada
Year Published: 2017

Geochemical and geochronologic data from the Hall Creek caldera, Toiyabe Range, Nevada

The magmatic, tectonic, and topographic evolution of what is now the northern Great Basin remains controversial, notably the temporal and spatial relation between magmatism and extensional faulting. This controversy is exemplified in the northern Toiyabe Range of central Nevada, where previous geologic mapping suggested the presence of a caldera...

Colgan, Joseph P.; Henry, Christopher D.
Colgan, J.P., and Henry, C.D., 2017, Geochemical and geochronologic data from the Hall Creek caldera, Toiyabe Range, Nevada: U.S. Geological Survey data release, https://doi.org/10.5066/F7JD4TX8.
Eruptive history, geochronology, and post-eruption structural evolution of the late Eocene Hall Creek Caldera, Toiyabe Range, Nevada
Year Published: 2017

Eruptive history, geochronology, and post-eruption structural evolution of the late Eocene Hall Creek Caldera, Toiyabe Range, Nevada

The magmatic, tectonic, and topographic evolution of what is now the northern Great Basin remains controversial, notably the temporal and spatial relation between magmatism and extensional faulting. This controversy is exemplified in the northern Toiyabe Range of central Nevada, where previous geologic mapping suggested the presence of a caldera...

Colgan, Joseph P.; Henry, Christopher D.
Colgan, J.P., and Henry, C.D., 2017, Eruptive history, geochronology, and post-eruption structural evolution of the late Eocene Hall Creek Caldera, Toiyabe Range, Nevada: U.S. Geological Survey Professional Paper 1832, 44 p., https://doi.org/10.3133/pp1832.
Computer modelling for ecosystem service assessment: Chapter 4.4
Year Published: 2017

Computer modelling for ecosystem service assessment: Chapter 4.4

Computer models are simplified representations of the environment that allow biophysical, ecological, and/or socio-economic characteristics to be quantified and explored. Modelling approaches differ from mapping approaches (Chapter 5) as (i) they are not forcibly spatial (although many models do produce spatial outputs); (ii) they focus on...

Dunford, Robert; Harrison, Paula; Bagstad, Kenneth J.
Dunford, R., P. Harrison, and K.J. Bagstad. Computer modeling for ecosystem service assessment. 2017. Pp 124-135 in: Mapping ecosystem services. B. Burkhard and J. Maes, eds. Pensoft Publishers: Sofia, Bulgaria.
DOI/GTN-P Climate and active-layer data acquired in the National Petroleum Reserve–Alaska and the Arctic National Wildlife Refuge, 1998–2015
Year Published: 2017

DOI/GTN-P Climate and active-layer data acquired in the National Petroleum Reserve–Alaska and the Arctic National Wildlife Refuge, 1998–2015

This report provides data collected by the climate monitoring array of the U.S. Department of the Interior on Federal lands in Arctic Alaska over the period August 1998 to July 2015; this array is part of the Global Terrestrial Network for Permafrost (DOI/GTN-P). In addition to presenting data, this report also describes monitoring, data...

Urban, Frank E.; Clow, Gary D.
Urban, F.E., and Clow, G.D., 2017, DOI/GTN-P Climate and active-layer data acquired in the National Petroleum Reserve–Alaska and the Arctic National Wildlife Refuge, 1998–2015: U.S. Geological Survey Data Series 1021, 546 p., https://doi.org/10.3133/ds1021.
Stratigraphic, geochemical, and hydrologic data for the Boston Peak wetland, Larimer County, CO, USA
Year Published: 2017

Stratigraphic, geochemical, and hydrologic data for the Boston Peak wetland, Larimer County, CO, USA

Comprehensive sampling of peat, underlying lakebed sediments, and coexisting waters of a naturally uraniferous montane wetland are combined with hydrologic measurements to define the important controls on uranium (U) supply and uptake. The major source of U to the wetland is groundwater flowing through locally fractured and faulted granite gneiss...

Schumann, R. Randall; Zielinski, Robert A.; Otton, James K.; Pantea, Michael P.; Orem, William H.
Schumann, R.R., Zielinski, R.A., Otton, J.K., Pantea, M.P., and Orem, W.H., 2017, Stratigraphic, geochemical, and hydrologic data for the Boston Peak wetland, Larimer County, CO, USA: U.S. Geological Survey, data release, https://doi.org/10.5066/F70Z71DQ.
Expanding the role of reactive transport models in critical zone processes
Year Published: 2017

Expanding the role of reactive transport models in critical zone processes

Models test our understanding of processes and can reach beyond the spatial and temporal scales of measurements. Multi-component Reactive Transport Models (RTMs), initially developed more than three decades ago, have been used extensively to explore the interactions of geothermal, hydrologic, geochemical, and geobiological processes in subsurface...

Li, Li; Maher, Kate; Navarre-Sitchler, Alexis; Druhan, Jennifer; Meile, Christof; Lawrence, Corey; Moore, Joel; Perdrial, Julia; Sullivan, Pamela; Thompson, Aaron; Jin, Lixin; Bolton, Edward W.; Brantley, Susan L.; Dietrich, William E.; Mayer, K. Ulrich; Steefel, Carl; Valocchi, Albert J.; Zachara, John M.; Kocar, Benjamin D.; McIntosh, Jennifer; Tutolo, Benjamin M.; Kumar, Mukesh; Sonnenthal, Eric; Bao, Chen; Beisman, Joe
Tools for mapping ecosystem services
Year Published: 2017

Tools for mapping ecosystem services

Mapping tools have evolved impressively in recent decades. From early computerised mapping techniques to current cloud-based mapping approaches, we have witnessed a technological evolution that has facilitated the democratisation of Geographic Information Systems (GIS). These advances have impacted multiple disciplines including ecosystem service...

Palomo, Ignacio; Adamescu, Mihai; Bagstad, Kenneth J.; Cazacu, Constantin; Klug, Hermann; Nedkov, Stoyan
Palomo, I., C.M. Adamescu, K.J. Bagstad, C. Constantin, H. Klug, and S. Nedkov. 2017. Tools for mapping ecosystem services. Pp. 70-74 in: Mapping ecosystem services. B. Burkhard and J. Maes, eds. Pensoft Publishers: Sofia, Bulgaria.
Integrating Radarsat-2, Lidar, and Worldview-3 Imagery to maximize detection of forested inundation extent in the Delmarva Peninsula, USA
Year Published: 2017

Integrating Radarsat-2, Lidar, and Worldview-3 Imagery to maximize detection of forested inundation extent in the Delmarva Peninsula, USA

Natural variability in surface-water extent and associated characteristics presents a challenge to gathering timely, accurate information, particularly in environments that are dominated by small and/or forested wetlands. This study mapped inundation extent across the Upper Choptank River Watershed on the Delmarva Peninsula, occurring within both...

Vanderhoof, Melanie; Distler, Hayley; Mendiola, Di Ana; Lang, Megan
Geologic map of the Fittstown 7.5΄ quadrangle, Pontotoc and Johnston Counties, Oklahoma
Year Published: 2017

Geologic map of the Fittstown 7.5΄ quadrangle, Pontotoc and Johnston Counties, Oklahoma

This 1:24,000-scale geologic map includes new geologic mapping as well as compilation and revision of previous geologic maps in the area. Field investigations were carried out during 2009–2011 that included mapping and investigations of the geology and hydrology of the Chickasaw National Recreation Area, Oklahoma, west of the map area.The...

Lidke, David J.; Blome, Charles D.
Lidke, D.J., and Blome, C.D., 2017, Geologic map of the Fittstown 7.5′ quadrangle, Pontotoc and Johnston Counties, Oklahoma: U.S. Geological Survey Scientific Investigations Map 3371, 14 p., 1 sheet, scale 1:24,000, https://doi.org/10.3133/sim3371.
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USGS science for a changing world logo
March 12, 2016

Hydrologic modeling and analysis tools are important components of NAWQA studies. The types of modeling and analysis tools that play a large role in NAWQA include: Statistical models and analyses, Geographic information system (GIS) analyses, Process-based models, and Hybrid statistical, GIS, and process-based models.

Screenshot of the software FLASH
March 7, 2011

FLASH (Flow-Log Analysis of Single Holes) is a computer program for the analysis of borehole vertical flow logs.

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2016 (approx.)

This video will provide a brief history and purpose for one of the oldest streamgages in Indiana. The gage is at the Wabash River at Lafayette, Indiana. The site number is 03335500. This video was produced at the request of the West Lafayette Parks Department where this historic gage is located. A QR code is displayed on an interpretive plaque next to the gage which is located in a high profile location within a city park adjacent to Purdue University. Park visitors can view a brief video on their smart phone which will educate them on the history of the gage and provide them with information on how to obtain current readings. The USGS WaterAlert text or email notifications is also featured. Our goal is to better educate the public on the importance of USGS streamgages in Indiana and the data we provide to the nation.

Some material in this video is copyrighted and for use by USGS only. Contact Producer for details.

View of the Rio Brazos river with green trees and blue sky as the backdrop.
October 17, 2016

Hydrologic technician Lindsay Hastings took this photo of the Rio Brazos near Tierra Amarilla, New Mexico during her first field trip as a streamgager with the New Mexico Water Science Center. Did you know that New Mexico was the birth place of streamgaging? The USGS began collecting streamflow information in 1889 when the first streamgage was established on the Rio Grande in New Mexico, about 80 miles from where this photo was taken. Streamflow data are used for a variety of reasons including; drought monitoring, flood forecasting, and water-allocation permitting. These data are available to the public and can be found on the NWIS (National Water Information Systems) website.   

Photo of USGS scientist collecting noble gas sample from spring site near Roaring Judy, Colorado. 
July 2016 (approx.)

USGS scientist collects noble gas sample from spring site near Roaring Judy, Colorado. Groundwater discharge that flows into the Upper Colorado River Basin varies in response to drought, which is likely due to aquifer systems that contain relatively young groundwater, according to a new U.S. Geological Survey study

Photo of a spring sampling location along Little Sandy River in southern Wyoming.
July 2016 (approx.)

Spring sampling location along Little Sandy River in southern Wyoming. Groundwater discharge that flows into the Upper Colorado River Basin varies in response to drought, which is likely due to aquifer systems that contain relatively young groundwater, according to a new U.S. Geological Survey study

Photo of water quality and sampling equipment deployed at spring site near Roaring Judy, Colorado.
July 2016 (approx.)

Water quality and sampling equipment deployed at spring site near Roaring Judy, Colorado. Groundwater discharge that flows into the Upper Colorado River Basin varies in response to drought, which is likely due to aquifer systems that contain relatively young groundwater, according to a new U.S. Geological Survey study

Photo of USGS scientists monitoring the water quality off a bridge near Sedgwick, Kansas
July 2016 (approx.)

USGS scientists monitor the water quality off a bridge near Sedgwick, Kansas. A new USGS study shows that water quality on the Little Arkansas River and in the Equus Beds aquifer has not substantially changed since 2007 recharge activities began in the Equus Beds aquifer.

Photo of the City of Wichita's Equus Beds Aquifer Storage and Recovery Phase II river intake structure near Sedgwick, Kansas.
July 2016 (approx.)

The City of Wichita's Equus Beds Aquifer Storage and Recovery Phase II river intake structure near Sedgwick, Kansas. A new USGS study shows that water quality on the Little Arkansas River and in the Equus Beds aquifer has not substantially changed since 2007 recharge activities began in the Equus Beds aquifer.

Photo of a temporary streamgage installed by the USGS on the Brazos River near Brazoria, Texas.
June 1, 2016

Temporary streamgage installed by the USGS on the Brazos River near Brazoria, Texas. Rapidly deployable streamgages can be installed temporarily to provide emergency managers with additional information needed to help protect public safety.

Photo of USGS scientist installing a temporary streamgage on the Brazos River near West Columbia, Texas.
June 1, 2016

USGS scientist Jody Avant installs a temporary streamgage on the Brazos River near West Columbia, Texas. Rapidly deployable streamgages can be installed temporarily to provide emergency managers with additional information needed to help protect public safety.

Photo of a temporary streamgage installed by the USGS on the Brazos River near West Columbia, Texas.
June 1, 2016

Temporary streamgage installed by the USGS on the Brazos River near West Columbia, Texas. Rapidly deployable streamgages can be installed temporarily to provide emergency managers with additional information needed to help protect public safety.

A family enjoys paddleboarding at Schreiner Park during spring break in Kerrville, Texas.
March 17, 2016

Cool, clear rivers of the Texas Hill Country attract visitors for many recreational opportunities. Here, a family enjoys paddleboarding at Schreiner Park during spring break in Kerrville, Texas.

The new USGS Texas Water Dashboard is a cutting-edge USGS map that provides critical current water information and National Weather Service forecast data at your fingertips on a desktop, smartphone or other mobile device. Understanding weather and streamflow can help determine the best places to go boating, fishing or hiking.

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Photo of Flooding on Mississippi River in December 2015
October 13, 2016

An assessment of the flooding that occurred in the Meramec River Basin from December 2015–January 2016 is available in a new report from the U.S. Geological Survey. The report includes peak stages and streamflows, historical comparisons and flood-frequency statistics from the record flood.

Photo of the Colorado River near Moab, Utah
August 15, 2016

Future groundwater replenishment in the Upper Colorado River Basin may benefit from projected increases in future basin-wide precipitation under current climate projections, according to a recent study by the U.S. Geological Survey and Bureau of Reclamation.

USGS: Science for a changing world
August 11, 2016

Two new streamgages recently installed by the U.S. Geological Survey in the cities of Greenfield and Elwood, Indiana will provide continuous, real-time streamflow and water level information in areas that have demonstrated a need for reliable flood warning and flood-related data.  

USGS logo
June 21, 2016

A new report about how groundwater quality and quantity has changed in and around Gaines, Terry and Yoakum counties, Texas is now available from the U.S. Geological Survey.

Photo of a temporary streamgage installed by the USGS on the Brazos River near West Columbia, Texas.
June 1, 2016

Reporters: Do you want to interview USGS scientists as they measure flooding? Please contact Jennifer LaVista.

Texas Water Dashboard map showing streamflow and weather conditions for May 27, 2016.
May 27, 2016

Reporters: Do you want to interview USGS scientists as they measure flooding? Please contact Jennifer LaVista.

Image: Key Bridge
March 22, 2016

Explore America's streams and rivers from your computer or mobile device.

Drought effects at Trinity Lake
May 28, 2015

Although record low precipitation has been the main driver of one of the worst droughts in California history, abnormally high temperatures have also played an important role in amplifying its adverse effects, according to a recent study by the U.S. Geological Survey and university partners.

USGS science for a changing world logo
January 26, 2015

In a long-term field study, U.S. Geological Survey (USGS) and Virginia Tech scientists have found that changes in geochemistry from the natural breakdown of petroleum hydrocarbons underground can promote the chemical release (mobilization) of naturally occurring arsenic into groundwater. This geochemical change can result in potentially significant arsenic groundwater contamination.

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