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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.

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Filter Total Items: 164
Date published: February 2, 2018
Status: Active

Oregon Water Use Program

With the ever-increasing rate of utilization of and competition for water (particularly during periods of drought) accurate, current water-use information is of considerable value. This is particularly so in determining future water availability in hydrologically critical areas and for making sound resource-management decisions. For the Oregon Water Science Center, a viable water-use data-...

Contacts: Jonathan Haynes
Date published: January 23, 2018
Status: Active

SPARROW Model Assessments of Nutrients and Suspended Sediment in the Pacific Northwest and California

SPARROW can be used to relate water-quality data to landscape characteristics, such as natural properties and human activities

Contacts: Daniel R Wise
Date published: December 21, 2017
Status: Active

Malheur Lake Light Transmission Study

The Malheur National Wildlife Refuge provides habitat for a variety of highly valued ecosystem services, including shorebirds, waterfowl, and a diversity of other wildlife species. 

Contacts: Tamara Wood
Date published: December 20, 2017
Status: Active

Future Climate Effects on Columbia and Willamette River Levees

USGS research directly helps local public agencies that are responsible for the design and maintenance of the levees that surround the northern Portland metropolitan area with the goal of protecting life and property in the event of flooding from the Columbia and Willamette Rivers that surround the city.

Date published: December 20, 2017
Status: Active

Upper Klamath River Basin Forecasts

"Determining water availability in the Upper Klamath Basin has always had a degree of uncertainty as a result of the complex hydrology and geology in the region and limited streamflow data."

Contacts: John Risley
Date published: December 15, 2017
Status: Active

Spring Vulnerability Study for Southeastern Oregon

Evaluating Spring Vulnerability to Climate Change on BLM Priority Management Areas in Southeastern Oregon
 

Contacts: Hank Johnson
Date published: December 15, 2017
Status: Active

Harney Basin Groundwater Study

This study will characterize and quantify the groundwater system in the Harney Basin to address gaps in our present understanding.

Date published: December 12, 2017
Status: Active

Willamette River Basin Dissolved Gas Monitoring Network

USGS total dissolved gas (TDG) data help guide spill and discharge management from dams operated along tributaries of the Willamette River.

Date published: December 1, 2017
Status: Active

Sediment Fingerprinting in the Upper Klamath Basin

Sediment fingerprinting has been used successfully to identify land uses that are the major sources of sediment. This study will apply these techniques in a predominantly rural, volcanic landscape.

Contacts: Liam Schenk
Date published: November 30, 2017
Status: Active

Effects of Highway Runoff on Water Quality

"SELDM facilitates analysis by providing precipitation, pre-storm streamflow, and other variables by region or from hydrologically similar sites."

Date published: November 20, 2017
Status: Completed

Macroinvertebrate Communities Evaluated Before and After a Channel Restoration Project in Silver Creek, Blaine County

The U.S. Geological Survey, in cooperation with Blaine County and The Nature Conservancy, evaluated the status of macroinvertebrate1 communities prior to and following a channel restoration project in Silver Creek, Blaine County, Idaho. The objective of the evaluation was to determine whether 2014 remediation efforts to restore natural channel conditions in an impounded area of Silver Creek...

Contacts: Dorene MacCoy
Date published: November 20, 2017
Status: Active

Water Quality in Aquifers Used for Drinking-Water Supplies, Gem County

The U.S. Geological Survey, in cooperation with Gem County and the Idaho Department of Environmental Quality, is assessing the quality of groundwater from freshwater aquifers used for drinking-water supplies.

Contacts: Erin M Murray

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
Filter Total Items: 73
Date published: January 8, 2018

Computed instantaneous suspended-sediment concentration in Williamson River

Suspended-sediment concentration data from National Real-Time Water Quality (NRTWQ) website.

Date published: January 4, 2018

Tualatin River Basin Water-Quality Sites

Map of currently active monitors in the Tualatin River Basin, Oregon.

Date published: January 4, 2018

Tualatin River Basin Water-Quality Samples

Real-time compilation of water quality samples for Tualatin River Basin from USGS National Water Information System (NWIS).

Date published: December 15, 2017

Harney Basin Data Mapper

Map viewer of groundwater sites in the Harney Basin, Oregon

Date published: December 13, 2017

Oregon Streamflow Table

Table of current streamflow conditions for 245 site(s) in Oregon.
 

Date published: December 12, 2017

Flood Inundation Mapper

The USGS Flood Inundation Mapping Program has two main functions: 1) partner with local communities to assist with the development and validation of flood inundation map libraries; and 2) provide online access to flood inundation maps along with real-time streamflow data, flood forecasts, and potential loss estimates. 

Date published: December 12, 2017

Portland HYDRA Rainfall Network

The HYDRA rainfall network is operated and maintained by the City of Portland Bureau of Environmental Services. Rainfall data are provided with their permission and cooperation.

Date published: December 12, 2017

National Water Information System (NWIS) - Oregon

National Water Information System: Mapper (Oregon)

Date published: December 11, 2017

Dissolved Organic Matter in the Upper Klamath River, Lost River, and Klamath Straits Drain

Data from an Analysis of Dissolved Organic Matter in the Upper Klamath River, Lost River, and Klamath Straits Drain, Oregon and California, 2013–16

Goldman, J.H., 2017, Data from an analysis of dissolved organic matter in the Upper Klamath River, Lost River, and Klamath Straits Drain, Oregon and California, 2013–16: U.S. Geological Survey data release,...

Date published: December 11, 2017

Virginia Water-Monitoring-Site Mapper

The Water-Monitoring-Sites Mapper is an interactive map of Virginia water monitoring-site locations from the USGS National Water Information System (NWIS). It provides access to surface water, groundwater, and water quality monitoring data for active sites. The functionality includes query, select, tabular display by county,...

Date published: December 11, 2017

West Virginia Water-Monitoring-Site Mapper

The Water-Monitoring-Sites Mapper is an interactive map of West Virginia water monitoring-site locations from the USGS National Water Information System (NWIS). It provides access to surface water, groundwater, and water quality monitoring data for active sites. The functionality includes query, select, tabular display by county,...

Date published: December 8, 2017

West Virginia Real-Time Precipitation Network

This interactive map shows current and cumulative rainfall total for precipitation sites in West Virginia.  Map provides real-time precipitation radar image to overlay from National Weather Service.

 

Downloadable spatial data files for exploration and analysis.

Filter Total Items: 28
Date published: September 26, 2016

Alabama Climate Response Network

Network wells depicted on the Climate Response Network location map
Note: Color shading in the table below indicates multiple wells that plot as a single point on the state location map above.
Note: BLS = Water Level in Feet Below Land Surface, RVD = Water Level referenced to a vertical datum

Date published: September 26, 2016

Alabama Active Water Level Network

Alabama Counties depicted on the state location map with active wells

Date published: September 22, 2016

Mobile River Basin Study

The Mobile River Basin in Alabama, Georgia, Mississippi, and Tennessee is one of the 59 study units that are part of the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program.

Date published: September 15, 2016

Michigan Lake Water Clarity Interactive Map Viewer

Available online are estimated Secchi-disk transparency (eSDT) and corresponding estimated trophic state index (eTSI) values for Michigan inland lakes. To view available eSDT for Michigan inland lakes greater than 20 acres without interference from clouds, cloud shadows, dense vegetation or shoreline, go to the Michigan Lake Water Clarity Interactive Map Viewer. 

Date published: September 14, 2016

Buffalo National River Services and River Level Guide

Real-time displays of current floating conditions at various sites along the Arkansas Buffalo River. 

Date published: May 7, 2014

How much water do we use?

Map viewer used to visualize water use by region and date for U.S. freshwater withdrawals, 1950-present (created by USGS VIZLAB)

Date published: May 1, 2014

Major rivers and tributaries in Alabama (taken from Hutson and others, 2009)

As part of their mission to protect public health and aquatic ecosystems, Alabama state agencies need accurate and representative streamflow statistics to establish realistic and applicable criteria for both water quality and water quantity (fig. 1).

Date published: January 1, 2014

Arkansas Groundwater - Quality Network

The Arkansas Groundwater - Quality Network is a web map interface that provides rapid access to the U.S. Geological Survey's (USGS) NWIS and the U.S. Environmental Protection Agency's (EPA) STORET databases of ambient groundwater information. The interface enables users to perform simple graphical analysis and download selected water-quality data. 

Date published: May 21, 2013

StreamStats Alabama

Beta version 4 is now available for most states on a trial basis, and version 3 remains available. Beta version 4 provides a single user interface (at http://streamstatsags.cr.usgs.gov/streamstats/) for all states that are implemented, rather than separate applications for each state, as in versions 2 and 3, and the user interface is more user friendly than previous versions. 

Date published: September 22, 2012

USGS StreamStats

StreamStats is a Web-based tool that provides streamflow statistics, drainage-basin characteristics, and other information for USGS streamgaging stations and for user-selected ungaged sites on streams. When users select the location of a streamgaging station, StreamStats provides previously published information from a database. When users select a site on an ungaged stream, 

Date published: September 4, 2012

U.S. Geological Survey Flood Inundation Mapping Science

Static flood-inundation map libraries consist of maps that have been created in advance of a flood that are ready to be served through the Internet. Each library consists of a set of flood extent and depth maps developed for predetermined stream stage intervals (for example, a map for each one foot of stage).

Filter Total Items: 14,518
Year Published: 2018

Linking transit times to catchment sensitivity to atmospheric deposition of acidity and nitrogen in mountains of the western United States

Transit times are hypothesized to influence catchment sensitivity to atmospheric deposition of acidity and nitrogen (N) because they help determine the amount of time available for infiltrating precipitation to interact with catchment soil and biota. Transit time metrics, including fraction of young water (Fyw) and mean transit time (MTT), were...

Clow, David W.; Mast, M. Alisa; Sickman, James O.
Clow, D.W., Mast, M.A., and Sickman, J.O., 2018, Linking transit times to catchment sensitivity to atmospheric deposition of acidity and nitrogen in mountains of the western United States: Hydrological Processes, v.32, no. 16, p.2456–2470. https://doi.org/10.1002/hyp.13183

Year Published: 2018

Detections of current-use pesticides at 12 surface water sites in California during a 2-year period beginning in 2015

Surface water samples were collected by the U.S. Geological Survey and multiple cooperators during base flow/irrigation runoff and storm runoff conditions from 12 sites throughout California, over 2 consecutive years beginning in April 2015, from both urban and agriculturally dominated watersheds. Water samples were analyzed by gas chromatography/...

Sanders, Corey J.; Orlando, James L. ; Hladik, Michelle L.
Sanders, C.J., Orlando, J.L., and Hladik, M.L., 2018, Detections of current-use pesticides at 12 surface water sites in California during a 2-year period beginning in 2015: U.S. Geological Survey Data Series 1088, 40 p., https://doi.org/10.3133/ds1088.

Year Published: 2018

Rating stability, and frequency and magnitude of shifts, for streamgages in Virginia through water year 2013

The U.S. Geological Survey, in cooperation with the Virginia Department of Environmental Quality, has quantified several measures of rating stability and the frequency and magnitude of changes to ratings through time for 174 real-time continuous streamgages active in Virginia as of September 30, 2013. Generalized additive models (GAMs) were fitted...

Messinger, Terence; Burgholzer, Robert W.
Messinger, T., and Burgholzer, R.W., 2018, Rating stability, and frequency and magnitude of shifts, for streamgages in Virginia through water year 2013: U.S. Geological Survey Scientific Investigations Report 2017–5137, 91 p., https://doi.org/10.3133/sir20175137.

Year Published: 2018

Spatial and temporal trends in selenium in the upper Blackfoot River watershed, southeastern Idaho, 2001–16

Phosphate mining in southeastern Idaho has been an important economic driver for the region and State for over 100 years, but weathering of mining waste rock has also released selenium into the Blackfoot River. This report analyzes and presents data from three separate but complementary studies monitoring selenium in streams in the region. The U.S...

Zinsser, Lauren M.; Mebane, Christopher A.; Mladenka, Greg C.; Van Every, Lynn R.; Williams, Marshall L.
Zinsser, L.M., Mebane, C.A., Mladenka, G.C., Van Every, L.R., and Williams, M.L., 2018, Spatial and temporal trends in selenium in the upper Blackfoot River watershed, southeastern Idaho, 2001–16: U.S. Geological Survey Scientific Investigations Report 2018-5081, 37 p., https://doi.org/10.3133/sir20185081.

Year Published: 2018

Comparison of regression relations of bankfull discharge and channel geometry for the glaciated and nonglaciated settings of Pennsylvania and southern New York

Streambank erosion in areas of past glacial deposition has been shown to be a dominant source of sediment to streams. Water resource managers are faced with the challenge of developing long and short term (emergency) stream restoration efforts that rely on the most suitable channel geometry for project design. A geomorphic dataset of new (2016, n=...

Clune, John W.; Chaplin, Jeffrey J.; White, Kirk E.
Clune, J.W., Chaplin, J.J., and White, K.E., 2018, Comparison of regression relations of bankfull discharge and channel geometry for the glaciated and nonglaciated settings of Pennsylvania and southern New York: U.S. Geological Survey Scientific Investigations Report 2018–5066, 20 p., https://doi.org/10.3133/sir20185066.

Year Published: 2018

Groundwater discharge characteristics for selected streams within the Loup River Basin, Nebraska, 2014–16

Streams in the Loup River Basin are sensitive to groundwater withdrawals because of the close hydrologic connection between groundwater and surface water. Groundwater discharge is the primary component of streamflow in the Loup River Basin and constitutes more than 90 percent of streamflow in the central part of the Sand Hills. To improve the...

Hobza, Christopher M.; Schepers, Aaron R.
Hobza, C.M., and Schepers, A.R., 2018, Groundwater discharge characteristics for selected streams within the Loup River Basin, Nebraska, 2014–16: U.S. Geological Survey Scientific Investigations Report 2018–5093, 50 p., https://doi.org/10.3133/sir20185093.

Year Published: 2018

Preliminary groundwater salinity mapping near selected oil fields using historical water-sample data, central and southern California

The distribution of groundwater salinity was mapped for 31 oil fields and adjacent aquifers and summarized by 8 subregions across major oil-producing areas of central and southern California. The objectives of this study were to describe the distribution of groundwater near oil fields having total dissolved solids less than 10,000 milligrams per...

Metzger, Loren F.; Landon, Matthew K.
Metzger, L.F., and Landon, M.K., 2018, Preliminary groundwater salinity mapping near selected oil fields using historical water-sample data, central and southern California: U.S. Geological Survey Scientific Investigations Report 2018–5082, 54 p., https://doi.org/10.3133/sir20185082.

Year Published: 2018

Refinement of a regression-based method for prediction of flow-duration curves of daily streamflow in the conterminous United States

Regional regression is a common tool used to estimate daily flow-duration curves (FDCs) at ungaged locations. In this report, several refinements to a particular implementation of the regional regression method for estimating FDCs are evaluated by consideration of different methodological options through a leave-one-out cross-validation procedure...

Over, Thomas M.; Farmer, William H.; Russell, Amy M.
Over, T.M., Farmer, W.H., and Russell, A.M., 2018, Refinement of a regression-based method for prediction of flow-duration curves of daily streamflow in the conterminous United States: U.S. Geological Survey Scientific Investigations Report 2018–5072, 34 p., https://doi.org/10.3133/sir20185072.

Year Published: 2018

Coeur d’Alene Basin Environmental Monitoring Program, surface water, northern Idaho—Annual data summary, water year 2017

Streams within the Coeur d’Alene River drainage basin in northern Idaho have been extensively affected by historical mining activities and are subject to ongoing remedial actions as part of the Bunker Hill Mining & Metallurgical Complex Superfund Site. The U.S. Geological Survey (USGS) operates 12 real-time streamgages and collects surface-...

Zinsser, Lauren M.
Zinsser, L.M., 2018, Coeur d’Alene Basin Environmental Monitoring Program, surface water, northern Idaho—Annual data summary, water year 2017: U.S. Geological Survey Open-File Report 2018-1113, 15 p., https://doi.org/10.3133/ofr20181113.

Year Published: 2018

Prioritization of oil and gas fields for regional groundwater monitoring based on a preliminary assessment of petroleum resource development and proximity to California’s groundwater resources

The California State Water Resources Control Board initiated a regional monitoring program in July 2015 to determine where and to what degree groundwater quality may be adversely impacted by oil and gas development activities. A key issue in the implementation of the regional groundwater monitoring program is that each year, detailed...

Davis, Tracy; Landon, Matthew K.; Bennett, George L.
Davis, T.A., Landon, M.K., and Bennett, G.L., 2018, Prioritization of oil and gas fields for regional groundwater monitoring based on a preliminary assessment of petroleum resource development and proximity to California’s groundwater resources: U.S. Geological Survey Scientific Investigations Report 2018–5065, 115 p., https://doi.org/10.3133/sir20185065.

Year Published: 2018

Geohydrology, geochemistry, and numerical simulation of groundwater flow and land subsidence in the Bicycle Basin, Fort Irwin National Training Center, California

Groundwater pumping from Bicycle Groundwater Basin (referred to as Bicycle Basin) in the Fort Irwin National Training Center, California, began in 1967. From 1967 to December 2010, about 46,000 acre-feet of water had been pumped from the basin and transported to the Irwin Basin. During this time, not only did water levels in the basin decline by...

Densmore, Jill N.; Woolfenden, Linda R.; Rewis, Diane L.; Martin, Peter M.; Sneed, Michelle; Ellett, Kevin M.; Solt, Michael; Miller, David M.
Densmore, J.N., Woolfenden L.R., Rewis, D.L., Martin, P.M., Sneed, M., Ellett, K.M., Solt, M., and Miller, D.M., 2018, Geohydrology, geochemistry, and numerical simulation of groundwater flow and land subsidence in the Bicycle Basin, Fort Irwin National Training Center, California: U.S. Geological Survey Scientific Investigations Report 2018–5067, 176 p., https://doi.org/10.3133/sir20185067.

Year Published: 2018

Modeling managed flows in the Sacramento/San Joaquin watershed, California, under scenarios of future change for CASCaDE2

Projections of managed flows from the Sacramento River/San Joaquin River watershed, California, into the San Francisco Bay and Sacramento-San Joaquin Delta under scenarios of future climate change are needed for evaluations of potential impacts on water supply and estuarine ecosystems. A new, multiple-model approach for achieving this is described...

Knowles, Noah; Cronkite-Ratcliff, Collin
Knowles, Noah, and Cronkite-Ratcliff, Collin, 2018, Modeling managed flows in the Sacramento/San Joaquin watershed, California, under scenarios of future change for CASCaDE2: U.S. Geological Survey Open-File Report 2018–1101, 38 p., https://doi.org/10.3133/ofr20181101.

Software and related material (data and documentation) are made available by the USGS to be used in the public interest and the advancement of science.

Filter Total Items: 16
Date published: June 29, 2016

Exploration and Graphics for RivEr Trends (EGRET)

Exploration and Graphics for RivEr Trends (EGRET) is an R-package for the analysis of long-term changes in water quality and streamflow, including the water-quality method Weighted Regressions on Time, Discharge, and Season (WRTDS).

Date published: April 14, 2016

Water Resources Applications Software

Software and related material (data and documentation) are made available by the U.S. Geological Survey (USGS) to be used in the public interest and the advancement of science.

Attribution: Water Resources
Date published: April 3, 2013

Shoreline Management Tool

The Shoreline Management Tool—An ArcMap Tool for Analyzing Water Depth, Inundated Area, Volume, and Selected Habitats, with an Example for the Lower Wood River Valley, Oregon

Date published: May 16, 2008

Calculate Streamflow Depletion by Nearby Pumping Well - STRMDEPL08

STRMDEPL08—An Extended Version of STRMDEPL with Additional Analytical Solutions to Calculate Streamflow Depletion by Nearby Pumping Well

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.

Filter Total Items: 1,058
USGS scientists on the Colorado River in the Grand Canyon, AZ
August 9, 2018

USGS scientists on the Colorado River in the Grand Canyon, AZ

USGS scientists on the Colorado River in the Grand Canyon, AZ

Grand Canyon bank Erosion.
August 9, 2018

Grand Canyon bank Erosion.

Comparing 2009 vs 2014 Bank surface after erosion, Grand Canyon AZ. 

June 30, 2018

Understanding Floods | Long-term Streamflow Data Collection (AD)

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

...
June 30, 2018

Understanding Floods | Long-term Streamflow Data Collection

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
June 29, 2018

Water Sampling on the Floodplain of the Missouri River

Water Sampling on the Floodplain of the Missouri River

Arial Image of the Effects of the 2011 Missouri River Flood
June 29, 2018

Arial Image of the Deposits of the 2011 Missouri River Flood

Arial Image of the Effects of the 2011 Missouri River Flood

Map of the U.S. by state, showing total water withdrawals, 2015
June 20, 2018

Map of the U.S. by state, showing total water withdrawals, 2015

Map of the U.S. by state, showing total water withdrawals, 2015

June 20, 2018

Indirect Measurement Field Notes and Metadata

This video describes the notes and other metadata that need to be recorded during indirect measurement surveys.
 

Water quality sampling at Bound Brook in Middlesex, NJ
June 20, 2018

June 2018 "People" category winner Molly Schreiner

Molly Schreiner water quality sampling at Bound Brook in Middlesex, NJ

Filter Total Items: 367
Date published: February 8, 2018

Not All Arsenic Tests are Created Equal

The reliability of arsenic testing for drinking water in Minnesota depends on how and when well water samples are collected, according to a new U.S. Geological Survey and the Minnesota Department of Health study, which highlights ways to improve the accuracy of arsenic tests for private wells.

Date published: February 7, 2018

Water-Quality Monitoring Program Aids Restoration of Great Lakes

A new water-quality monitoring program, established by the U.S. Geological Survey, can provide scientists and managers with the best available data to help evaluate the health of Great Lakes ecosystems and improve water quality for recreation and commercial fishing.

Date published: January 30, 2018

January 23, 2018 M7.9 Gulf of Alaska Earthquake and Tsunami

One week ago, on January 23rd at 12:31 a.m. local time, Alaskans were rocked by a magnitude 7.9 earthquake, with an epicenter in the Gulf of Alaska, about 350 miles southwest of Anchorage, and about 175 miles southeast of Kodiak Island.

Date published: January 25, 2018

Salinity Decreased throughout Upper Colorado River Basin Over Time

Salinity loads that originate from groundwater within the Upper Colorado River Basin have decreased from 1986-2011, according to a new U.S. Geological Survey study done in cooperation with the Colorado River Basin Salinity Control Program.

Date published: January 24, 2018

Alaska Earthquake Rattles Florida’s Groundwater Plumbing

At 12:32 am Alaska time on January 23, 2018, a magnitude 7.9 earthquake shook Alaska residents out of their beds and set off fears of a tsunami all down the West Coast. Fortunately, the tsunami was only a few inches in height, but within an hour of the earthquake in Alaska, waves of a different sort were hitting far away in Florida. 

Date published: January 9, 2018

USGS gages assist Georgia, Alabama and Florida water management efforts

Fayette County Georgia, Water System Director, Lee Pope, discusses water management efforts to alleviate issues downstream.

Video link.

Date published: December 7, 2017

Groundwater Quality in the North: The Glacial Aquifer System

A regional assessment of untreated groundwater in the Glacial aquifer system, which includes parts of 25 states across the northern contiguous United States, is now available from the U.S. Geological Survey.

Date published: December 7, 2017

Groundwater Quality in the Southwest: The Rio Grande Aquifer System

A regional assessment of untreated groundwater in the Rio Grande aquifer system, which includes parts of Colorado, New Mexico and Texas, is now available from the U.S. Geological Survey.

Date published: December 7, 2017

Groundwater Quality in the East: The Piedmont and Blue Ridge Crystalline-Rock Aquifers

A regional assessment of untreated groundwater in the Piedmont and Blue Ridge crystalline-rock aquifers, which includes parts of 11 states across the contiguous United States, is now available from the U.S. Geological Survey.

Date published: December 7, 2017

The Quality of the Nation’s Groundwater: Progress on a National Survey

This story was updated on December 7, 2017.
The U.S. Geological Survey is near the midpoint of a complex undertaking to survey the quality of the nation’s largest drinking-water resource.

Date published: December 7, 2017

Groundwater Quality in the Midwest: The Cambrian-Ordovician Aquifer System

A regional assessment of untreated groundwater in the Cambrian-Ordovician aquifer system, which includes parts of Minnesota, Wisconsin, Michigan, Iowa, Illinois, Missouri and Indiana, is now available from the U.S. Geological Survey.

Date published: December 6, 2017

Scientists Home in on Causes of High Radium Levels in Key Midwestern Aquifer

Oxygen levels, dissolved minerals among factors responsible for high concentrations of radium in untreated water from aquifer that underlies six states