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Water Resources

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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: 161
Date published: September 24, 2016

Streamflow Data Available Online

The USGS in Michigan-in cooperation with local, State, Tribal, and Federal partners-operates 155 streamgages recording stage and streamflow, and 13 lake-level gages. There are about 7,400 streamgages nationwide; many of these gages provide real-time data in 15-minute increments, which typically are transmitted to the World Wide Web every 1 to 2 hours using satellite, telephone, or cellular...

Contacts: Thomas Weaver
Date published: September 24, 2016

Low-Flow Streamgage Network in Michigan

Data on low-flow characteristics are used by water-resources managers for a variety of purposes, including water-supply planning, making decisions about wastewater-discharge and water withdrawal permits, and evaluating in-stream flow requirements. The Michigan low-flow network currently consists of seven sites where streamflow is typically measured only during low-flow periods. In addition to...

Contacts: Thomas Weaver
Date published: September 24, 2016

Water-Quality Monitor Network in Michigan

The USGS operates a network of real-time water-quality monitoring stations that measure up to five physical parameters. The parameters are temperature, specific conductance, pH, dissolved oxygen, and turbidity. One to four of those parameters are measured at 26 sites, while all five parameters are measured at 13 sites. These data are used for decision making about hydroelectric power...

Contacts: Thomas Weaver
Date published: September 24, 2016

Crest-Stage Streamgage Network in Michigan

Historically, small streams with drainage areas less than 100 square miles have not been adequately represented in regional peak- (high) flow analysis. In Michigan, USGS operates 24 traditional crest-stage gages, where stage and streamflow is only measured during high flows, and 6 continuous-record crest-stage gages, where cooperators can continually monitor stage and USGS maintains a high-...

Contacts: Thomas Weaver
Date published: September 24, 2016

Connecting Channels

In response to decreasing water levels in the Great Lakes, especially Lake Michigan and Lake Huron, the International Upper Great Lakes Study (IUGLS) asked USGS to continuously measure flows in the connecting channels of St. Marys, St. Clair, and Detroit Rivers, and Water Survey Canada (WSC) to measure flows of Niagara River. To accommodate the effects of variable backwater and the...

Contacts: Thomas Weaver
Date published: September 24, 2016

Bacterial Pathogens

The U.S. Geological Survey (USGS) Michigan Bacteriological Research Laboratory (MI-BaRL) studies the source, occurrence, and distribution of the bacterial pathogens Shiga-toxin producing E. coli (STEC), Salmonella, Shigella, Campylobacter, Enterococcus, and Staphylococcus and the relation of occurrence of pathogens with fecal indicator bacteria, land-use, season, hydrology, geology, weather...

Contacts: Natasha Isaacs
Date published: September 24, 2016

Avian Botulism in Distressed Great Lakes Environments

Botulism outbreaks occur within the Great Lakes and often result in significant bird die offs. It is believed that Clostridium botulinum is the reason for these die offs and the trophic pathways that this organism travels are of interest to understanding its place within the food web. The GLRI Avian Botulism Project is investigating six different matrices: sediment, Cladophora, invertebrates,...

Contacts: Natasha Isaacs
Date published: September 24, 2016

Michigan Bacteriological Research Laboratory (MI-BaRL)

The U.S. Geological Survey (USGS) Michigan Bacteriological Research Laboratory (MI-BaRL) is a newly renovated laboratory space operated by the USGS Michigan Water Science Center in Lansing, MI. The laboratory is staffed by two Ph.D. level microbiologists and five M.S. level microbiologists with a combined 70 years of experience in microbiology and water resources research. The USGS MI-BaRL...

Contacts: Natasha Isaacs
Date published: September 24, 2016

Determine Baseline and Sources of Contaminant Loadings to the Great Lakes

To better understand the quality of water flowing into the Great Lakes, the USGS is conducting water-quality analyses for nutrients, sediment, and toxic substances and estimating the amount (load) of these substances for tributaries to the Great Lakes. Information on the occurrence and distribution of contaminants is needed to provide baseline information, measure progress towards restoration...

Contacts: Daniel Obenauer
Date published: September 24, 2016
Status: Active

Acoustics

Michigan Water Science Center used acoustic meters for about 90 percent of the streamflow measurements made in Fiscal Year 2012. Wading measurements are done using a modified top setting wading rod equipped with an acoustic Doppler velocimeter (ADV). Acoustic Doppler current profilers (ADCP) are used when measurement depths are too deep to wade. ADCP measurements can either be made with a...

Contacts: Thomas Weaver
Date published: September 24, 2016

Groundwater Data Available Online

The USGS Michigan Water Science Center cooperates with local and state agencies to collect and maintain groundwater data across Michigan. The USGS and local partners actively monitor 90 wells. Of these 90 wells, 22 are continuously monitored with 3 of those continuously...

Contacts: Chris Hoard
Date published: September 24, 2016

Enhance Great Lakes Beach Recreational Water Quality Decision Making

Important questions about beach closures and management remain unanswered in the Great Lakes where over 500 beaches are routinely used along the nearly 11,000 miles of coastline. The economies of coastal areas are dependent on public confidence in the quality of water at the shoreline, and beach managers need reliable science-based information to make beach closure and beach management...

Contacts: Carrie Givens
Filter Total Items: 1,661
Year Published: 2017

Hourly storm characteristics along the U.S. West Coast: Role of atmospheric rivers in extreme precipitation

Gridded hourly precipitation observations over the conterminous U.S., from 1948 to 2002, are analyzed to determine climatological characteristics of storm precipitation totals. Despite generally lower hourly intensities, precipitation totals along the U.S. West Coast (USWC) are comparable to those in southeast U.S. (SEUS). Storm durations, more so...

Lamjiri, Maryam A.; Dettinger, Michael; Ralph, F. Martin; Guan, B.
Attribution: Water Resources
Lamjiri, M. A., M. D. Dettinger, F. M. Ralph, and B. Guan (2017), Hourly storm characteristics along the U.S. West Coast: Role of atmospheric rivers in extreme precipitation, Geophys. Res. Lett., 44, doi:10.1002/2017GL074193.

Year Published: 2017

Complex networks of functional connectivity in a wetland reconnected to its floodplain

Disturbances such as fire or flood, in addition to changing the local magnitude of ecological, hydrological, or biogeochemical processes, can also change their functional connectivity—how those processes interact in space. Complex networks offer promise for quantifying functional connectivity in watersheds. The approach resolves connections...

Larsen, Laurel G.; Newman, Susan; Saunders, Colin; Harvey, Judson
Attribution: Water Resources
Larsen, L.G., Newman, S., Saunders, C., and Harvey, J.W., 2017, Complex networks of functional connectivity in a wetland reconnected to its floodplain, Water Resources Research, 53, 6089–6108, doi:10.1002/ 2017WR020375.

Year Published: 2017

Fine particle retention within stream storage areas at base flow and in response to a storm event

Fine particles (1–100 µm), including particulate organic carbon (POC) and fine sediment, influence stream ecological functioning because they may contain or have a high affinity to sorb nitrogen and phosphorus. These particles are immobilized within stream storage areas, especially hyporheic sediments and benthic biofilms. However, fine particles...

Drummond, J. D.; Larsen, L. G.; González-Pinzón, R.; Packman, A. I.; Harvey, Judson
Attribution: Water Resources
Drummond, J.D., Larsen, L.G., Gonzalez-Pinzon, R., Packman, A.I. and Harvey, J.D., 2017, Fine particle retention within stream storage areas at base flow and in response to a storm event, Water Resources Research, 53, 5690–5705, doi:10.1002/2016WR020202.

Year Published: 2017

Plant diversity increases with the strength of negative density dependence at the global scale

Theory predicts that higher biodiversity in the tropics is maintained by specialized interactions among plants and their natural enemies that result in conspecific negative density dependence (CNDD). By using more than 3000 species and nearly 2.4 million trees across 24 forest plots worldwide, we show that global patterns in tree species diversity...

LaManna, Joseph A.; Mangan, Scott A.; Alonso, Alfonso; Bourg, Norman; Brockelman, Warren Y.; Bunyavejchewin, Sarayudh; Chang, Li-Wan; Chiang, Jyh-Min; Chuyong, George B.; Clay, Keith; Condit, Richard; Cordell, Susan; Davies, Stuart J.; Furniss, Tucker J.; Giardina, Christian P.; Gunatilleke, I.A.U. Nimal; Gunatilleke, C.V. Savitri; He, Fangliang; Howe, Robert W.; Hubbell, Stephen P.; Hsieh, Chang-Fu; Inman-Narahari, Faith M.; Janik, David; Johnson, Daniel J.; Kenfack, David; Korte, Lisa; Kral, Kamil; Larson, Andrew J.; Lutz, James A.; McMahon, Sean M.; McShea, William J.; Memiaghe, Herve R.; Nathalang, Anuttara; Novotny, Vojtech; Ong, Perry S.; Orwig, David A.; Ostertag, Rebecca; Parker, Geoffrey G.; Phillips, Richard P.; Sack, Lawren; Sun, I-Fang; Tello, J. Sebastian; Thomas, Duncan W.; Turner, Benjamin L.; Vela Diaz, Dilys M.; Vrska, Tomas; Weiblen, George D.; Wolf, Amy; Yap, Sandra; Myers, Jonathan A.
Attribution: Water Resources
J.A. LaManna et al., 2017, Plant diversity increases with the strength of negative density dependence at the global scale, Science, 356, 6345, 1389-1392.

Year Published: 2017

Response of deep groundwater to land use change in desert basins of the Trans-Pecos region, Texas, USA: Effects on infiltration, recharge, and nitrogen fluxes

Quantifying the effects of anthropogenic processes on groundwater in arid regions can be complicated by thick unsaturated zones with long transit times. Human activities can alter water and nutrient fluxes, but their impact on groundwater is not always clear. This study of basins in the Trans-Pecos region of Texas links anthropogenic land use and...

Robertson, Wendy Marie; Böhlke, John Karl; Sharp, John M.
Attribution: Water Resources
Robertson, W.M., Böhlke, J.K., and Sharp, J.M.Jr., 2017, Response of deep groundwater to land use change in desert basins of the Trans-Pecos region, Texas, USA: Effects on infiltration, recharge, and nitrogen fluxes. Hydrological Processes, v. 31, p. 2349-2364. http://dx.doi.org/10.1002/hyp.11178.

Year Published: 2017

Tracking the fate of nitrate through pulse-flow wetlands: A mesocosm scale 15N enrichment tracer study

Quantitative information about the fate of applied nitrate (NO3-N) in pulse-flow constructed wetlands is essential for designing wetland treatment systems and assessing their nitrogen removal services for agricultural and stormwater applications. Although many studies have documented NO3-N losses in wetlands, controlled experiments indicating the...

Messer, Tiffany L.; Burchell, Michael R.; Böhlke, John Karl; Tobias, Craig R.
Attribution: Water Resources
Messer, T.L., Burchell, M.R., Böhlke, J.K., and Tobias, C.R., 2017, Tracking the fate of nitrate through pulse-flow wetlands: A mesocosm scale 15N enrichment tracer study. Ecological Engineering, v. 106, p. 597-608. DOI: 10.1016/j.ecoleng.2017.06.016

Year Published: 2017

On the probability distribution of daily streamflow in the United States

Daily streamflows are often represented by flow duration curves (FDCs), which illustrate the frequency with which flows are equaled or exceeded. FDCs have had broad applications across both operational and research hydrology for decades; however, modeling FDCs has proven elusive. Daily streamflow is a complex time series with flow values ranging...

Blum, Annalise G.; Archfield, Stacey A.; Vogel, Richard M.
Attribution: Water Resources

Year Published: 2017

A hybrid machine learning model to predict and visualize nitrate concentration throughout the Central Valley aquifer, California, USA

Intense demand for water in the Central Valley of California and related increases in groundwater nitrate concentration threaten the sustainability of the groundwater resource. To assess contamination risk in the region, we developed a hybrid, non-linear, machine learning model within a statistical learning framework to predict nitrate...

Ransom, Katherine M.; Nolan, Bernard T.; Traum, Jonathan A.; Faunt, Claudia; Bell, Andrew M.; Gronberg, Jo Ann M.; Wheeler, David C.; Zamora, Celia; Jurgens, Bryant; Schwarz, Gregory E.; Belitz, Kenneth; Eberts, Sandra; Kourakos, George; Harter, Thomas
Attribution: Water Resources

Year Published: 2017

Groundwater resources of the Devils Postpile National Monument—Current conditions and future vulnerabilities

This study presents an extensive database on groundwater conditions in and around Devils Postpile National Monument. The database contains chemical analyses of springs and the monument water-supply well, including major-ion chemistry, trace element chemistry, and the first information on a list of organic compounds known as emerging contaminants....

Evans, William C.; Bergfeld, Deborah
Attribution: Water Resources
Evans, W.C., and Bergfeld, D., 2017, Groundwater resources of the Devils Postpile National Monument—Current conditions and future vulnerabilities: U.S. Geological Survey Scientific Investigations Report 2017–5048, 31 p., https://doi.org/10.3133/sir20175048.

Year Published: 2017

Archaeal diversity and CO2 fixers in carbonate-/siliciclastic-rock groundwater ecosystems

Groundwater environments provide habitats for diverse microbial communities, and although Archaea usually represent a minor fraction of communities, they are involved in key biogeochemical cycles. We analysed the archaeal diversity within a mixed carbonate-rock/siliciclastic-rock aquifer system, vertically from surface soils to subsurface...

Lazar, Cassandre Sara; Stoll, Wenke; Lehmann, Robert; Herrmann, Martina; Schwab, Valérie F.; Akob, Denise M.; Nawaz, Ali; Wubet, Tesfaye; Buscot, François; Totsche, Kai-Uwe; Küsel, Kirsten
Attribution: Water Resources
Lazar, C. S.; Stoll, W.; Lehmann, R.; Herrmann, M.; Schwab, V. F.; Akob, D. M.; Nawaz, A.; Wubet, T.; Buscot, F.; Totsche, K.-U.; Küsel, K., Archaeal diversity and CO2 fixers in carbonate-/siliciclastic-rock groundwater ecosystems. Archaea 2017, 2017, 1-13, https://doi.org/10.1155/2017/2136287

Year Published: 2017

Application of an unstructured 3D finite volume numerical model to flows and salinity dynamics in the San Francisco Bay-Delta

A linked modeling approach has been undertaken to understand the impacts of climate and infrastructure on aquatic ecology and water quality in the San Francisco Bay-Delta region. The Delft3D Flexible Mesh modeling suite is used in this effort for its 3D hydrodynamics, salinity, temperature and sediment dynamics, phytoplankton and water-quality...

Martyr-Koller, R.C.; Kernkamp, H.W.J.; Van Dam, Anne A.; Mick van der Wegen; Lucas, Lisa; Knowles, N.; Jaffe, B.; Fregoso, T.A.
Martyr-Koller, R.C., Kernkamp, H.W.J., van Dam, A., van der Wegen, M., Lucas, L.V., Knowles, N., Jaffe, B., Fregoso, T.A., 2017, Application of an unstructured 3D finite volume numerical model to flows and salinity dynamics in the San Francisco Bay-Delta: Estuarine, Coastal and Shelf Science, 192, 86-107, http://dx.doi.org/10.1016/j.ecss.2017.04.024

Year Published: 2017

Analyzing cloud base at local and regional scales to understand tropical montane cloud forest vulnerability to climate change

The degree to which cloud immersion provides water in addition to rainfall, suppresses transpiration, and sustains tropical montane cloud forests (TMCFs) during rainless periods is not well understood. Climate and land use changes represent a threat to these forests if cloud base altitude rises as a result of regional warming or deforestation. To...

Van Beusekom, Ashley E.; González, Grizelle; Scholl, Martha A.
Attribution: Water Resources
Van Beusekom, A. E., González, G., and Scholl, M. A.:, 2017, Analyzing cloud base at local and regional scales to understand tropical montane cloud forest vulnerability to climate change, Atmos. Chem. Phys., 17, 7245-7259, https://doi.org/10.5194/acp-17-7245-2017.

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: 1,056
Ang Laragway Sang Pagbalikbalik Sang Tubig,  Water Cycle, Hiligaynon
February 19, 2018

Ang Laragway Sang Pagbalikbalik Sang Tubig, The Water Cycle, Hiligayno

Ang Laragway Sang Pagbalikbalik Sang Tubig, The Water Cycle, Hiligaynon

Attribution: Water Resources
Oběh vody: The Water Cycle, Czech
February 19, 2018

Oběh vody: The Water Cycle diagram in Czech

Co to je oběh vody?

Co to je oběh vody? Mohl bych si jednoduše odpovědět – je všude kolem mne ! Oběh vody znamená přítomnost a pohyb vody na Zemi, v Zemi i nad Zemí. Voda je stále v pohybu a neustále mění svoji formu, z kapalné do plynné či pevné, a naopak. Oběh vody existuje již po miliardy let a veškerý pozemský život je na něm závislý; Země by bez něj byla již pěkně...

Attribution: Water Resources
बच्चों के लिए पानी/जल चक्र - The Water Cycle for Kids, Hindi
February 19, 2018

बच्चों के लिए पानी/जल चक्र - The Water Cycle for Kids, Hindi

बच्चों के लिए पानी/जल चक्र - The Water Cycle, Hindi

आप सोचते होंगे कि आसमान से गिरी बारिश की हर एक बूंद, या आपके पीने के पानी का प्रत्येक गिलास, हर बार नया है, परन्तु यह हमेशा से यहां पर है और यह पानी/जल का भाग है ।

Attribution: Water Resources
Diagrama del cicle de l'aigua - The Water Cycle, Catalan
February 19, 2018

Diagrama del cicle de l'aigua - The Water Cycle diagram in Catalan

Diagrama del cicle de l'aigua

El cicle de l'aigua descriu l'existència i el moviment d'aigua damunt, dins, i per sobre de la Terra. L'aigua de la Terra està sempre en moviment i canviant d'estat, de líquid a vapor, a gel i novament a líquid. El cicle de l'aigua ha estat funcionant durant milers de milions d'anys i tota la vida a la Terra en depèn.

Attribution: Water Resources
Leboyo la meetse - The Water Cycle, Northern Sotho
February 19, 2018

Leboyo la meetse - The Water Cycle, Northern Sotho

Leboyo la meetse - The Water Cycle, Northern Sotho

Attribution: Water Resources
Dijagram ciklusa vode - The Water Cycle, Croatian
February 19, 2018

Dijagram ciklusa vode - The Water Cycle diagram in Croatian

Dijagram ciklusa vode - The Water Cycle diagram in Croatian

Attribution: Water Resources
Vannets Kretsløp - The Water Cycle, Norwegian
February 19, 2018

Vannets Kretsløp - The Water Cycle, Norwegian

Hva er vannets kretsløp?

Hva er vannets kretsløp? Det er "meg" overalt. Vannets kretsløp beskriver forekomsten og bevegelsen av vann oppå, inn i, og over jorden. Jordens vann er hele tiden i bevegelse og det forandrer stadig form fra å være flytende til damp, til is og så tilbake igjen. Vannets kretsløp har fungert i milliarder av år og alt livet på jorden er avhengig...

Attribution: Water Resources
Vandkredsløbet - The water cycle, in Danish
February 19, 2018

Vandkredsløbet The water cycle diagram in Danish

Hvad er vandkredsløbet?

Hvad er vandkredsløbet? Det kan let besvares ved at sige, at det er alt det vand, som omgiver os! Vandkredsløbet refereres også nogle gange som det hydrologiske kredsløb. Det hydrologiske kredsløb beskriver de processer, som transporterer vandet i og på jorden samt i atmosfæren. Vandet på jorden er altid i bevægelse og er altid på vej mod at...

Attribution: Water Resources
Cykl Hydrologiczny - The Water Cycle, Polish
February 19, 2018

Cykl Hydrologiczny - The Water Cycle, Polish

Czym jest cykl hydrologiczny?

Co rozumiemy pod pojęciem cyklu hydrologicznego? Można powiedzieć, że to "my" w każdej cząsteczce! Cykl hydrologiczny (obieg wody w przyrodzie) opisuje istnienie i ruch wody na, w i ponad powierzchnią Ziemi. Woda na Ziemi jest w ciągłym ruchu i zmienia swoje formy, od stanu ciekłego, poprzez gazowy do stałego i na odwrót. Obieg wody trwa od...

Attribution: Water Resources
Diagram van de watercyclus - The Water Cycle diagram in Dutch
February 19, 2018

Diagram van de watercyclus - The Water Cycle diagram in Dutch

Diagram van de watercyclus - The Water Cycle diagram in Dutch

Attribution: Water Resources
어린이를 위한 물의 순환 - The Water Cycle, Korean
February 19, 2018

어린이를 위한 물의 순환 - The Water Cycle, Korean

어린이를 위한 물의 순환 - The Water Cycle, Korean

Attribution: Water Resources
Veeringe Skeem - The Water Cycle, Estonian
February 19, 2018

Veeringe Skeem - The Water Cycle, Estonian

Mis on veeringe?

Mis on veeringe? Sellele on lihtne vastata - see olen mina, vesi, igal pool! Veeringe kirjeldab vee olemasolu ja liikumist Maa peal, sees ja kohal. Maakeral on vesi alati liikvel ning oma olekut muutmas - vedelast auruks ja jääks ning uuesti vedelaks. Veeringe on toiminud miljardeid aastaid ning sellest oleneb kogu elu Maal. Ilma selleta oleks Maa päris...

Attribution: Water Resources
Filter Total Items: 364
Date published: February 22, 2017

Sediment Flows into Galveston Bay Studied to Help Understand Health of Watershed

A better understanding of sediment and freshwater flow into Galveston Bay is now available from a new U.S. Geological Survey report, done in cooperation with the Texas Water Development Board, and the Galveston Bay Estuary Program.

Date published: February 16, 2017

Land Elevation Changes Due to Groundwater Withdrawals Indicate Regional Shifts in Houston-Galveston Area

New Report Marks 40 Years of Subsidence Investigations

Date published: February 13, 2017

New USGS Field Method is a Breakthrough for Contaminant Analysis in Water Samples

The U.S. Geological Survey published a new report highlighting a portable continuous-flow centrifuge which aims to save time and money on contaminant analysis of particles suspended in water samples.

Date published: February 13, 2017

New USGS Map of High Plains Aquifer Represents Conditions After Enacting Changes To Agricultural Management Practices

Water-level changes from 2002 to 2015 were examined in wells screened in the High Plains aquifer within the Republican River Basin and the results are now available in a new U.S. Geological Survey Scientific Investigations Map.

Date published: February 8, 2017

USGS Releases New JavaScript Library for Plotting Water Data for the Nation

A new JavaScript library, called GWIS (Graphing Water Information System), can create time-series plots of information measured at U.S. Geological Survey hydrologic data collection sites across the United States.

Date published: February 8, 2017

Bigger May Not Be Better When It Comes to Mississippi River Diversions

New research shows how river diversions may change water quality in estuaries. 

Date published: February 1, 2017

Christian Zimmerman to Lead Studies as New Director of the Alaska Science Center

The U.S. Geological Survey is pleased to announce the selection of Dr. Christian Zimmerman as the new director of their Alaska Science Center in Anchorage, Alaska. Zimmerman succeeds Dr. Mark Shasby who held the position for the past six years.

Date published: January 30, 2017

Shrinking Number of Long-term Monitoring Sites Could Hamper Scientists’ Ability to Measure Recovery of Impaired Streams

Consistent, national-scale and long-term water-quality monitoring of the Nation's rivers and streams has declined, in some cases, by more than half over time

Attribution: Water Resources
Date published: January 24, 2017

USGS Uses State-of-the-Art Science to Estimate Nutrient and Suspended-Sediment Loads in the Klamath Basin

USGS uses state-of-the-art science techniques to estimate phosphorus and suspended-sediment loads to Upper Klamath Lake in the Klamath Basin.

Date published: January 24, 2017

Uranium in Spring Water North of Grand Canyon Likely Not Related to Nearby Mining Activity

Uranium levels in Pigeon Spring, just north of the Grand Canyon, are likely due to a natural source of uranium and not related to the nearby former Pigeon Mine, according to a recent study by the U.S. Geological Survey.

Date published: January 19, 2017

Groundwater Quality in the West: Examining Basin and Range Basin-Fill Aquifers

A regional assessment of untreated groundwater in the Basin and Range basin-fill aquifers, which include parts of Nevada, California, Arizona, Utah and adjacent states, is now available from the U.S. Geological Survey.

Date published: January 19, 2017

Groundwater Quality in the Coastal Lowlands Aquifer System

A regional assessment of untreated groundwater in the Coastal Lowlands aquifer system in the southeastern United States is now available from the U.S. Geological Survey.