Mission Areas L2 Landing Page Tabs
Water is one of seven science mission areas of the U.S. Geological Survey (USGS). Water's mission is to collect and disseminate reliable, impartial, and timely information that is needed to understand the Nation's water resources.Read Science Plan
The southern Chesapeake Bay region is experiencing land subsidence along with rising sea levels, both of which can contribute to coastal flooding. The rates at which these two processes are occurring are not exactly known. Mapping of land elevation change requires ground-truth survey data at multiple locations that are accurate and precise. With the exception of a few CORS sites that have...
Links to Sources of Water Information
The U.S. Geological Survey (USGS) investigates the occurrence, quantity, quality, distribution, and movement of surface and underground waters and disseminates the data to the public, State and local governments, public and private utilities, and other Federal agencies involved with managing water resources
The map to the left allows you to...
Flooding is a concern for everyone in Louisiana. Floods demand immediate and decisive action by governmental entities, businesses, and individual citizens, all of whom have to make critical decisions that directly impact the extent, duration, and mitigation of losses resulting from flooding. How high will the water get? How long will the flood last? What areas will be affected? What roads will...
1 June 2010
Hurricane season starts today, and the USGS Lower Mississippi Gulf Water Science Center is committed to collecting and providing the most up-to-date information before, during, and after the storms that are sure to come our way. When a hurricane or tropical storm is approaching, accurate and timely storm data are crucial in making good decisions regarding personal safety and...
USGS Information and Links
Hurricane Hazards—A National Threat (fact sheet)
USGS Natural Hazards - Hurricanes
Hurricane Forecast Information
National Hurricane Center—(NWS)
Current Tropical Forecast Information
GOES-8 Atlantic Infrared Imagery
GOES-8 Atlantic Visible Imagery
Earth Scan Laboratory—(LSU)
GOES-8 Atlantic Infrared...
USGS Louisiana Coastal Sites
Hurricane season starts today, and the USGS Lower Mississippi Gulf Water Science Center is committed to collecting and providing the most up-to-date information before, during, and after the storms that are sure to come our way. When a hurricane or tropical storm is approaching, accurate and timely storm data is crucial in making good decisions regarding...
River and Coastal Forecasts
The USGS is not a forecasting agency, but the National Weather Service (NWS) is, and they make extensive use of the data we collect in their effort to provide you with the most accurate and up-to-date forecasts of many Louisiana rivers and streams, and weather along the coast. The links below will provide you with direct access to the NWS forecasts for...
In the mid-1990s, a new technology emerged in the field of inland streamflow monitoring. The South Atlantic Water Science Center is making great use of the acoustic Doppler current profiler (ADCP). It was originally developed for oceanographic work, but was adapted for inland streamflow measurements. This instrument is transforming the U.S. Geological Survey (USGS) streamgaging program.
We partner with the EPA to conduct long-term water-quality and streamflow monitoring and streamflow measurements in the Coeur d’Alene River Basin, which has been widely impacted by historic mining activities. We collect water-quality samples 2-4 times per year at 20 sites throughout the basin. Our scientists analyze these samples for metals, hardness, sediment, and nutrients. In addition, we ...
Hills Creek, Lookout Point, and Dexter Dams are located on the Middle Fork Willamette River upstream of Eugene in western Oregon, and are important resources managed by the U.S. Army Corps of Engineers (USACE) for flood control, hydroelectric power, recreation, navigation, and irrigation. On the South Santiam River east of Albany in western Oregon, Green Peter and Foster Dams provide functions...
Groundwater monitoring in the Deschutes Basin shows water-level declines are larger than might be expected from climate variations alone, raising questions regarding the influence of groundwater pumping, canal lining, and other human influences.
The USGS collects, analyzes, and distributes data on a wide variety of water-related issues and resources. Much of our data is publicly available through the National Water Information System (NWIS), but additional datasets and analytical tools are also available.Access NWISWeb
MODFLOW-2000 and MODPATH models for simulations used to delineate contributing areas for 2017 pumping conditions to selected wells in Ingham County, Michigan: U.S. Geological Survey data release
A regional groundwater flow model (https://pubs.usgs.gov/sir/2009/5244/) was updated to reflect 2017
pumping conditions in the Tri-County Region covering most of Clinton, Eaton, and Ingham Counties,
Michigan. This model was developed to simulate the regional hydrologic system in Tri-County area
and continues to be used for...
Evaluating Decadal Changes in Groundwater Quality: Groundwater quality data were collected from 5,000 wells between 1988-2001 (first sampling event) by the U.S. Geological Survey’s National Water-Quality Assessment Project. Samples are collected in groups of 20-30 wells with similar characteristics called networks. About 1,500 of these wells in 67 networks were sampled about 10...
SEAWAT model used to evaluate water management issues in the Santa Barbara and Foothill groundwater basins, California
The city of Santa Barbara, in cooperation with the U.S. Geological Survey (USGS) California Water Science Center,
developed a three-dimensional density-dependent groundwater-flow and solute-transport model (the Santa Barbara
Flow and Transport Model, or SBFTM), based on an existing groundwater-flow model, to simulate seawater intrusion
into the Santa Barbara basin under...
Soil-Water Balance model datasets used to estimate groundwater recharge in Florida and parts of Georgia, Alabama, and South Carolina, 1995-2010
A soil-water balance model (SWB) was developed to estimate recharge to the groundwater flow system in Florida
and parts of Georgia, Alabama, and South Carolina for the period 1995 through 2010. The model was not calibrated;
however, various water budget components from the model output compared reasonably well with other estimates.
The model was used to estimate recharge...
This product consists of one tabular dataset and associated metadata of water quality information related to rivers, streams, and reservoirs in the Upper Mississippi River watershed between 2012 and 2016. This data release is apart of a national assessment of freshwater aquatic carbon fluxes. Data consist of organic and inorganic carbon related species, carbon dioxide and methane gas fluxes...
Groundwater quality data were collected in 5,000 wells between 1988-2001 by the National Water-Quality Assessment Project. About 1,500 of these wells were sampled again between 2002-2012 to evaluate decadal changes in groundwater quality. Monitoring wells, domestic supply wells, and some public supply wells were included in this study. All water was collected prior to treatment. Groundwater...
A MODFLOW-NWT groundwater flow model was developed to simulate groundwater
movement in the area around Anvil Lake, and groundwater inputs and outputs from
the lake from 1980 to 2014. Surface-water hydrology was simulated using the lake
package. The MODFLOW model was first calibrated for steady-state conditions, or
"average" conditions corresponding to January 1, 1980,...
The U.S. Geological Survey maintains a program of water-quality studies in San Francisco Bay (CA) that began in 1969. This USGS Data Release will archive and make available all measurements beginning in 2016. Each year, a data file containing the previous year’s data will be added. Water-quality constituent measurements from sensors include salinity, temperature, light attenuation...
This dataset provides model specifications used to estimate metabolism. The format is a table with 1 row per model (1 tab-delimited file, compressed into zip file). The specific format of this configuration file is arbitrary and specific to this analysis, and the format need not be replicated to use streamMetabolizer; however, this tabular format is useful because it allows for the reading by...
The U.S. Geological Survey conducted a bathymetric survey of a reach of the Deschutes River near Bend, OR, between Benham Falls and Dillon Falls on July 25, 2016, to support research on remote sensing of river discharge and characterization of habitat for amphibians, particularly the Oregon Spotted Frog. The bathymetric survey data were obtained with an ITER Systems Bathyswath-1 468 kHz multi...
Hyperspectral image data from the Deschutes River near Bend, OR, were acquired on July 26, 2016 to support research on remote sensing of rivers, particularly retrieval of water depth, and to facilitate efforts to characterize habitat for amphibians, primarily the Oregon Spotted Frog. These data were collected by the Compact Airborne Spectrographic Imager (CASI) 1500H manufactured by ITRES...
iTOUGH2-EOS7C model used to analyze multiphase flow and underpressured shale at the Bruce Nuclear Site, Ontario, Canada
Hydraulic testing has revealed dramatic underpressures in Paleozoic shales and carbonates at the
Bruce nuclear site in Ontario. Although evidence from both laboratory and field studies suggests that
a small amount of gas phase methane could be present in the shale, previous studies examining
causal linkages between gas phase and the underpressure have been inconclusive. To...
Stream‐centric methods for determining groundwater contributions in karst mountain watersheds
Climate change influences on mountain hydrology are uncertain, but likely to be mediated through changes in subsurface hydrologic residence times and flowpaths. The heterogeneity of karst aquifers add complexity in assessing the resiliency of these water sources to perturbation, suggesting a clear need to quantify contributions from and losses to...Neilson, Bethany; Tennant, Hyrum; Barnes, Michelle; Stout, Trinity; Miller, Matthew P.; Gabor, Rachel S.; Jameel, Yusef; Millington, Mallory; Gelderloos, Andrew; Bowen, Gabriel J.; Brooks, Paul D.
Effect of spatial and temporal scale on simulated groundwater recharge investigations
Hydrologic model input datasets such as climate, land use, elevation, soil, and geology information are available in a range of scales for use in water resources investigations. Smaller spatial and temporal scale input data allow groundwater recharge models to simulate more physically realistic processes and presumably result in more accurate...Tillman, Fred; Pruitt, Tom; Gangopadhyay, Subhrendu
Mercury methylation and bioaccumulation in Sinclair Inlet, Kitsap County, Washington
The U.S. Geological Survey evaluated the transformation of mercury to bioavailable methylmercury in Sinclair Inlet, Kitsap County, Washington, and assessed the effect of the transformation processes on the mercury burden in marine organisms and sediment. In August 2008, samples of sediment, water, and biota from six sites in Sinclair Inlet and...Paulson, A.J.; Marvin-DiPasquale, M.C.; Moran, P.W.; DeWild, J.F.; Stewart, J.F.; Toft, J.; Agee, J.L.; Kakouros, E.; Kieu, Le H.; Carter, B.; Sheibley, R.W.; Cordell, J.; Krabbenhoft, D. P.
Evaluation of the effects of changes in the timing of water-level drawdowns on the export of phosphorus from Little St. Germain Lake, Wisconsin
Little St. Germain Lake is a 978-acre, multibasin lake in Vilas County, Wisconsin. In the interest of improving its water quality, the Little St. Germain Lake Protection and Rehabilitation District initiated a cooperative study with the U.S. Geological Survey to describe the current phosphorus input into and export from Little St. Germain Lake and...Dantoin, Eric D.; Robertson, Dale M.
Manure and fertilizer inputs to land in the Chesapeake Bay watershed, 1950–2012
Understanding changing nutrient concentrations in surface waters requires quantitative information on changing nutrient sources in contributing watersheds. For example, the proportion of nutrient inputs reaching streams and rivers is directly affected by when and where those nutrients enter the landscape. The goal of this report is to contribute...Keisman, Jennifer L.D.; Devereux, Olivia H.; LaMotte, Andrew E.; Sekellick, Andrew J.; Blomquist, Joel D.
Variations on a method for evaluating decadal-scale changes in the groundwater quality of two GAMA coastal study units 2004–14, California GAMA Priority Basin Project
Decadal changes in groundwater quality in two study units on the north-central California coast were evaluated by the Priority Basin Project (PBP) of the Groundwater Ambient Monitoring and Assessment (GAMA) Program. Groundwater samples collected from wells during 2004–05 were compared on a pair-wise basis to samples collected from the same wells...Kent, Robert
Assessment of water resources in areas that affect the habitat of the endangered Hine’s emerald dragonfly in the Lower Des Plaines River Valley, Illinois
Review of previous investigations indicates that potential decreases in groundwater recharge and increased groundwater extraction in the vicinity of the Lower Des Plaines River Valley in Will County, Illinois, may reduce the amount of groundwater flow in the Silurian aquifer in this area. Groundwater discharge from the Silurian aquifer to wetlands...Kay, Robert T.; Gahala, Amy M.; Bailey, Clinton
Mechanisms of earthquake‐induced chemical and fluid transport to carbonate groundwater springs after earthquakes
Mechanisms by which hydrochemical changes occur after earthquakes are not well documented. We use the 2016–2017 central Italy seismic sequence, which caused notable hydrochemical transient variations in groundwater springs to address this topic, with special reference to effects on fractured carbonate aquifers. Hydrochemistry measured before and...Rosen, Michael R.; Binda, Gilberto; Archer, Claire; Pozzi, Andrea; Michetti, Alessandro; Noble, Paula
Brackish groundwater and its potential as a resource in the southwestern United States
Secure, reliable, and sustainable water resources are fundamental to food production, energy independence, and the health of humans and ecosystems. But the large-scale development of fresh groundwater resources has stressed aquifers in some areas, causing declines in the amount of groundwater in storage and decreases in discharge to surface-water...Anning, David W.; Beisner, Kimberly R.; Paul, Angela P.; Stanton, Jennifer S.; Thiros, Susan A.
Factors influencing fine sediment on stream beds in the Midwestern United States
Fine sediment (particles <2 mm in diameter) in stream beds has wide-ranging effects on hydraulics, geomorphology, and ecology and is a primary focus for stream quality management in many regions. We identify reach- and basin-scale factors associated with fine sediment in the beds of 83 stream reaches in the Midwestern United States using...Konrad, Christopher P.; Gellis, Allen
Metal reactivity in laboratory burned wood from a watershed affected by wildfires
We investigated interfacial processes affecting metal mobility by wood ash under laboratory-controlled conditions using aqueous chemistry, microscopy, and spectroscopy. The Valles Caldera National Preserve in New Mexico experiences catastrophic wildfires of devastating effects. Wood samples of Ponderosa Pine, Colorado Blue Spruce, and Quaking...Rahman, Asifur; El Hayek, Eliane; Blake, Johanna M.; Bixby, Rebecca J.; Ali, Abdul-Mehdi; Spilde, Michael; Otieno, Amanda A.; Miltenberger, Keely; Ridgeway, Cyrena; Artyushkova, Kateryna; Atudorei, Viorel; Ceratto, Jose M.
Tritium deposition in precipitation in the United States, 1953–2012
Tritium is a radioactive isotope of hydrogen (half-life is equal to 12.32 years). Since it is part of the water molecule, tritium can be used to track and date groundwater and surface water when the history of tritium in precipitation and recharge is known. To facilitate that effort, tritium concentrations in precipitation were reconstructed from...Michel, Robert L.; Jurgens, Bryant C.; Young, Megan B.
The USGS produces many types of multimedia products. Use the links below to browse our offerings of photograph galleries, podcasts and sound files, videos, aerial photos, and posters related to water. The USGS Newsroom has a Web page that highlights the main collection of multimedia products.
The USGS is developing methods to improve data collection during floods to gain new insight into the rise and fall of flood waters. In the past, the only data left behind after a flood was how high the water got, or the peak of the flood. This video presents the methodology that hydrologists are using to set up a Continuous Slope-area Reach in remote areas that are...
Water Sampling on the Floodplain of the Missouri River
Arial Image of the Effects of the 2011 Missouri River Flood
Arial Image of the 2011 Missouri River Flood
A modern coral reef in the Florida Keys There is little living coral and high rates of bioerosion. Photo: Lauren Toth, USGS
Map of the U.S. by state, showing total water withdrawals, 2015
Molly Schreiner water quality sampling at Bound Brook in Middlesex, NJ
In this photo, we are performing a Groundwater Integrity Test by pumping the well with a Grundfos Submersible Pump. Shown in the photo on the "left" is James Caldwell checking the pump rate in 5 gallon buckets, while Dale Tom shown on the "right" is checking the water level and rate drop off in the well with an electric tape. The location of this photo is at Groundwater...
Water measurements, VT
Chris Mason (VAWSC) sampling on the Rappahannock River Cableway at Fredericksburg, VA.
Fog along the Yukon River showing a Black Spruce dominated forest in the foreground, which is prone to wildfire. Photo by Bruce Wylie, USGS
New USGS assessment provides fresh insights into nation’s brackish groundwater inventory
USGS provides a long-term look at changes in the quality of our nation’s rivers and streams
Two decades of harmful algal bloom, nutrient and sediment research by the U.S. Geological Survey is helping to support Wichita’s long-term vision of a sustainable water supply into the future. Early warning indicators of harmful algal blooms have been developed for Cheney Reservoir, Kansas, according to a new USGS publication done in cooperation with the City of Wichita, Kansas.
Media and the public are invited to attend a free meeting about South Dakota water issues on Thursday, April 6, in Rapid City, South Dakota.
The Colorado River system provides about 35 million Americans with a portion of their water supply. It irrigates 5½ million acres of land in the West and provides water to tribes, parks, and wildlife. The system serves parts of seven States and Mexico—but reservoir levels have crept lower over the past several years, sparking questions about how much water remains and who will have access.
The water in the Delta arrives primarily from the Sacramento and San Joaquin Rivers, supplying water for more than 22 million people. This water source supports California’s trillion-dollar economy—the sixth largest in the world—and its $27 billion agricultural industry.
Groundwater, which flows out of sight through aquifers beneath our feet, is one of the Nation’s most important natural resources. In recognition of National Groundwater Awareness Week, March 5–11, 2017, here’s an opportunity to put your knowledge of this vital resource to the test!
In order to provide long-term storage of diverted surface water from the Rio Grande as part of the Aamodt water rights settlement, managed aquifer recharge by surface infiltration in Pojoaque River Basin arroyos was proposed as an option.
The new table includes both standard and conventional atomic weights values to clarify that many atomic weights have natural variation and to provide single values for chemical education use
Nitrogen and phosphorus are essential nutrients—yet too much of a good thing is not always a good thing. Scientists are investigating nutrient pollution down the Mississippi River.
USGS Finds Elevated Levels of Arsenic, Radon, Methane in Some Private Wells in Lycoming County, Pennsylvania
Tests of 75 private drinking water wells in Lycoming County, in north-central Pennsylvania, found water from most of the sampled wells contained concentrations of radon that exceeded a proposed, nonbinding health standard for drinking water. Smaller percentages of the wells contained concentrations of arsenic or methane that exceed existing drinking water standards.