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 Glacial Aquifer System Groundwater Availability Study began in 2012 and will be completed in 2016. The glacial aquifer system groundwater availability study is one of the USGS efforts in response to the Department of Interior WaterSMART initiative. This study is designed to provide information and analysis to stakeholders and decisionmakers for characterizing groundwater availability in...
Groundwater resources in northwestern Louisiana may be needed for development of natural gas production from the Haynesville Shale. Use of groundwater for hydro-fracturing of the shale may lower water levels and alter groundwater flow directions in the Carrizo-Wilcox aquifer and other local aquifers. Regional maps of aquifers in northwestern Louisiana are unavailable. The LaWSC, in cooperation...
Since 1950 when the U.S. Geological Survey (USGS) first conducted water-use compilations, important changes in water use have occurred in Alabama. The early part of the history (1950 to 1980) showed a steady increase in water use. During this time, the expectation was that, as the population increased, so would water use. Contrary to this expectation, reported water withdrawals declined in...
Welcome....the Lower Tennessee River Basin in Tennessee, Alabama, Georgia, Kentucky, and Mississippi is one of the 59 study units that are part of the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program.The long-term goals of this program are to describe the status and trends in the quality of a large, representative part of the Nation's surface- and ground-water...
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...
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...
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...
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-...
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...
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...
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,...
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...
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.
Complex mixtures of Pesticides in Midwest U.S. streams indicated by POCIS time-integrating samplers
The Midwest United States is an intensely agricultural region where pesticides in streams pose risks to aquatic biota, but temporal variability in pesticide concentrations makes characterization of their exposure to organisms challenging. To compensate for the effects of temporal variability, we deployed polar organic chemical integrative samplers...Van Metre, Peter C.; Alvarez, David; Mahler, Barbara J.; Nowell, Lisa H.; Sandstrom, Mark W.; Moran, Patrick W.
Reexamining ultrafiltration and solute transport in groundwater
Geologic ultrafiltration—slowing of solutes with respect to flowing groundwater—poses a conundrum: it is consistently observed experimentally in clay-rich lithologies, but has been difficult to identify in subsurface data. Resolving this could be important for clarifying clay and shale transport properties at large scales as well as interpreting...Neuzil, Christopher E.; Person, Mark
Steady state fractionation of heavy noble gas isotopes in a deep unsaturated zone
To explore steady state fractionation processes in the unsaturated zone (UZ), we measured argon, krypton, and xenon isotope ratios throughout a ∼110 m deep UZ at the United States Geological Survey (USGS) Amargosa Desert Research Site (ADRS) in Nevada, USA. Prior work has suggested that gravitational settling should create a nearly linear increase...Seltzer, Alan M.; Severinghaus, Jeffrey P.; Andraski, Brian J.; Stonestrom, David A.
Bacteria versus selenium: A view from the inside out
Bacteria and selenium (Se) are closely interlinked as the element serves both essential nutrient requirements and energy generation functions. However, Se can also behave as a powerful toxicant for bacterial homeostasis. Conversely, bacteria play a tremendous role in the cycling of Se between different environmental compartments, and bacterial...Staicu, Lucian; Oremland, Ronald S.; Tobe, Ryuta; Mihara, Hisaaki
Methane fluxes from tropical coastal lagoons surrounded bymangroves, Yucatán, Mexico
Methane concentrations in the water column and emissions to the atmosphere were determined for three tropical coastal lagoons surrounded by mangrove forests on the Yucatán Peninsula, Mexico. Surface water dissolved methane was sampled at different seasons over a period of 2 years in areas representing a wide range of salinities and...Chuang, Pei-Chuan; Young, Megan B.; Dale, Andrew W.; Miller, Laurence G.; Herrera-Silveira, Jorge A; Paytan, Adina
Evaluating the impact of irrigation on surface water – groundwater interaction and stream temperature in an agricultural watershed
Changes in groundwater discharge to streams caused by irrigation practices can influence stream temperature. Observations along two currently flood-irrigated reaches in the 640-square-kilometer upper Smith River watershed, an important agricultural and recreational fishing area in west-central Montana, showed a downstream temperature decrease...Essaid, Hedeff I.; Caldwell, Rodney R.
U.S. Geological Survey Karst Interest Group Proceedings, San Antonio, Texas, May 16–18, 2017
Introduction and AcknowledgmentsKarst aquifer systems are present throughout parts of the United States and some of its territories, and have developed in carbonate rocks (primarily limestone and dolomite) and evaporites (gypsum, anhydrite, and halite) that span an interval of time encompassing more than 550 million years. The depositional...Kuniansky, Eve L.; Spangler, Lawrence E.
Reconstructing a herbivore’s diet using a novel rbcL DNA mini-barcode for plants
Next Generation Sequencing and the application of metagenomic analyses can be used to answer questions about animal diet choice and study the consequences of selective foraging by herbivores. The quantification of herbivore diet choice with respect to native versus exotic plant species is particularly relevant given concerns of invasive species...Erickson, David L.; Reed, Elizabeth; Ramachandran, Padmini; Bourg, Norman; McShea, William J.; Ottesen, Andrea
Stable isotope analyses of oxygen (18O:17O:16O) and chlorine (37Cl:35Cl) in perchlorate: reference materials, calibrations, methods, and interferences
RationalePerchlorate (ClO4−) is a common trace constituent of water, soils, and plants; it has both natural and synthetic sources and is subject to biodegradation. The stable isotope ratios of Cl and O provide three independent quantities for ClO4− source attribution and natural attenuation studies: δ37Cl, δ18O, and δ17O (or Δ17O or 17Δ) values....Böhlke, John Karl; Mroczkowski, Stanley J.; Sturchio, Neil C.; Heraty, Linnea J.; Richman, Kent W.; Sullivan, Donald B.; Griffith, Kris N.; Gu, Baohua; Hatzinger, Paul B.
A practical method for the determination of total selenium in environmental samples using isotope dilution-hydride generation-inductively coupled plasma-mass spectrometry
A safe, practical, and accurate method for the determination of selenium (Se) in range of environmental samples was developed. Small sample masses, 5–20 mg, were amended with 82Se enriched isotope for the isotope dilution (ID), preceding a multi-step wet digestion with nitric acid (HNO3) and hydrogen peroxide (H2O2). Samples were incubated in an...Kleckner, Amy E.; Kakouros, Evangelos; Stewart, A. Robin
Density-driven free-convection model for isotopically fractionated geogenic nitrate in sabkha brine
Subsurface brines with high nitrate (NO3−) concentration are common in desert environments as atmospheric nitrogen is concentrated by the evaporation of precipitation and little nitrogen uptake. However, in addition to having an elevated mean concentration of ∼525 mg/L (as N), NO3− in the coastal sabkhas of Abu Dhabi is enriched in 15N (mean δ15N...Wood, Warren W.; Böhlke, John Karl
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.
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...
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 ।
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.
Leboyo la meetse - The Water Cycle, Northern Sotho
Dijagram ciklusa vode - The Water Cycle diagram in Croatian
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...
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...
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...
Diagram van de watercyclus - The Water Cycle diagram in Dutch
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...
ວັດທະຈັກ ນໍ້າ ສໍາລັບ ໂຮງຮຽນ - The Water Cycle, Lao
New research shows how river diversions may change water quality in estuaries.
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.
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
USGS uses state-of-the-art science techniques to estimate phosphorus and suspended-sediment loads to Upper Klamath Lake in the Klamath Basin.
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.
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.
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.
A regional assessment of untreated groundwater in the Northern Atlantic Coastal Plain aquifer system in the eastern United States is now available from the U.S. Geological Survey.
A regional assessment of untreated groundwater in the Southeastern Coastal Plain aquifer system is now available from the U.S. Geological Survey.
A regional assessment of untreated groundwater in the combined Valley and Ridge and Piedmont and Blue Ridge aquifers in the eastern United States is now available from the U.S. Geological Survey.
Deep drilling in eastern Virginia will evaluate past effects of groundwater pumping, land subsidence, and relative sea-level rise. Future injection of water is expected to add pressure, expand the aquifer, and raise the land surface.