Mission Areas L2 Landing Page Tabs
Water information is fundamental to national and local economic well-being, protection of life and property, and effective management of the Nation’s water resources. The USGS works with partners to monitor, assess, conduct targeted research, and deliver information on a wide range of water resources and conditions including streamflow, groundwater, water quality, and wateruse and availability.
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
Expertise in large river research provides science information to inform decisions on river management and restoration in the Midwest Region. Connectivity is a fundamental concept in river ecology and refers to opportunities for water to flow along and through riverine ecosystems. It is considered one of the primary drivers of river productivity, biological diversity and ecosystem health.
The occurrence of toxic blue-green algae causes harmful algal blooms in lakes, reservoirs, and rivers and is a growing threat to public health, with human and animal illness and death reported in at least 43 states.
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-...
SPARROW can be used to relate water-quality data to landscape characteristics, such as natural properties and human activities
Proposed new coal export terminals in Washington and Oregon could increase rail traffic through the Northwest and potentially increase unintended release of coal dust to the environment.
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.
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.
"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."
Water management in the arid Umatilla Basin has become increasingly complex in recent years. Competing demands from society for generating hydro-electric power, maintaining and restoring fisheries, restoring watershed health, providing water for growing communities, and increasing agricultural production through irrigation, have put water resources in the Umatilla Basin and throughout the...
Evaluating Spring Vulnerability to Climate Change on BLM Priority Management Areas in Southeastern Oregon
This study will characterize and quantify the groundwater system in the Harney Basin to address gaps in our present understanding.
USGS total dissolved gas (TDG) data help guide spill and discharge management from dams operated along tributaries of the Willamette River.
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
Estimating Drought Streamflow Probabilities for Virginia Streams
Maximum likelihood logistic regression is used to estimate drought probabilities for selected Virginia rivers and streams. Hydrologic drought streamflow probabilities for summer months are provided as functions of streamflows during the previous winter months. This application allows the display and query of these drought streamflow probabilities for Virginia streams.
Models of the Klamath River from Link River to Keno Dam
Models of the Klamath River from Link River to Keno Dam were constructed and calibrated by the U.S. Geological Survey for calendar years 2006-09.
Computed instantaneous suspended-sediment concentration in Williamson River
Suspended-sediment concentration data from National Real-Time Water Quality (NRTWQ) website.
Tualatin River Basin Water-Quality Sites
Map of currently active monitors in the Tualatin River Basin, Oregon.
Tualatin River Basin Water-Quality Samples
Real-time compilation of water quality samples for Tualatin River Basin from USGS National Water Information System (NWIS).
Harney Basin Data Mapper
Map viewer of groundwater sites in the Harney Basin, Oregon
Oregon Streamflow Table
Table of current streamflow conditions for 245 site(s) in Oregon.
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.
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.
National Water Information System (NWIS) - Oregon
National Water Information System: Mapper (Oregon)
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, https://doi.org/10.5066/F71Z42V4.
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, hydrologic unit code (HUC), and exporting spatial and tabular data.
Downloadable spatial data files for exploration and analysis.
Map of intensive sites and rapid sites where data was collected for the Tualatin River Basin Beaver Study.
Current stream conditions and NWS forecast stream conditions.
The Texas Water Dashboard presents USGS real-time stream, lake and reservoir, precipitation and groundwater data for more than 750 USGS real-time observation stations in Texas.
Amite River Basin
The clickable sites, Water Resources Conditions List, and Data Table at the bottom of the map are all connected. Interacting with any of them will activate pop-ups and display the site in both the Map, List and Table.
This interactive map shows current and cumulative rainfall total for precipitation sites in Virginia. Map provides real-time precipitation radar image to overlay from National Weather Service.
Endocrine disrupting chemicals (EDC) threaten the reproductive success and long-term survival of sensitive aquatic populations in the U.S. National Park Service (NPS). The project employs a standardized EDC risk assessment framework to link new and ongoing research efforts in individual Parks and in Park Monitoring Networks, in order to provide a service-wide assessment of EDC risk in the NPS.
Explore water resources maps and GIS data.
River and Coastal Forecast Information
Lower Mississippi River Forecast Center, Slidell, Louisiana—(NWS)
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
Bioremediation in fractured rock: 2. Mobilization of chloroethene compounds from the rock matrix
A mass balance is formulated to evaluate the mobilization of chlorinated ethene compounds (CE) from the rock matrix of a fractured mudstone aquifer under pre- and postbioremediation conditions. The analysis relies on a sparse number of monitoring locations and is constrained by a detailed description of the groundwater flow regime. Groundwater...Shapiro, Allen M.; Tiedeman, Claire; Imbrigiotta, Thomas; Goode, Daniel J.; Hsieh, Paul A.; Lacombe, Pierre; DeFlaun, Mary F.; Drew, Scott R.; Curtis, Gary P.
Landscapes from the waves—Marine terraces of California
Many coastlines around the world have stair-step landforms, known as marine terraces. Marine terraces make up a large part of coastal California’s landscape—from San Diego to Crescent City. Find out how these landscapes form, why marine terraces are of interest to scientists, and where you can explore these landscapes.Schulz, Marjorie S.; Lawrence, Corey; Muhs, Daniel; Prentice, Carol S.; Flanagan, Sam
Metamodeling and mapping of nitrate flux in the unsaturated zone and groundwater, Wisconsin, USA
Nitrate contamination of groundwater in agricultural areas poses a major challenge to the sustainability of water resources. Aquifer vulnerability models are useful tools that can help resource managers identify areas of concern, but quantifying nitrogen (N) inputs in such models is challenging, especially at large spatial scales. We sought to...Nolan, Bernard T.; Green, Christopher T.; Juckem, Paul F.; Liao, Lixia; Reddy, James E.
ModelArchiver—A program for facilitating the creation of groundwater model archives
ModelArchiver is a program designed to facilitate the creation of groundwater model archives that meet the requirements of the U.S. Geological Survey (USGS) policy (Office of Groundwater Technical Memorandum 2016.02, https://water.usgs.gov/admin/memo/GW/gw2016.02.pdf, https://water.usgs.gov/ogw/policy/gw-model/). ModelArchiver version 1.0 leads...Winston, Richard B.
Seeking excellence: An evaluation of 235 international laboratories conducting water isotope analyses by isotope-ratio and laser-absorption spectrometry
RationaleWater stable isotope ratios (δ2H and δ18O values) are widely used tracers in environmental studies; hence, accurate and precise assays are required for providing sound scientific information. We tested the analytical performance of 235 international laboratories conducting water isotope analyses using dual-inlet and continuous-flow...Wassenaar, L. I.; Terzer-Wassmuth, S.; Douence, C.; Araguas-Araguas, L.; Aggarwal, P. K.; Coplen, Tyler B.
Volume-weighted particle-tracking method for solute-transport modeling; Implementation in MODFLOW–GWT
In the traditional method of characteristics for groundwater solute-transport models, advective transport is represented by moving particles that track concentration. This approach can lead to global mass-balance problems because in models of aquifers having complex boundary conditions and heterogeneous properties, particles can originate in cells...Winston, Richard B.; Konikow, Leonard F.; Hornberger, George Z.
Iterative near-term ecological forecasting: Needs, opportunities, and challenges
Two foundational questions about sustainability are “How are ecosystems and the services they provide going to change in the future?” and “How do human decisions affect these trajectories?” Answering these questions requires an ability to forecast ecological processes. Unfortunately, most ecological forecasts focus on centennial-scale climate...Dietze, Michael C.; Fox, Andrew; Beck-Johnson, Lindsay; Betancourt, Julio L.; Hooten, Mevin B.; Jarnevich, Catherine S.; Keitt, Timothy H.; Kenney, Melissa A.; Laney, Christine M.; Larsen, Laurel G.; Loescher, Henry W.; Lunch, Claire K.; Pijanowski, Bryan; Randerson, James T.; Read, Emily; Tredennick, Andrew T.; Vargas, Rodrigo; Weathers, Kathleen C.; White, Ethan P.
The metabolic regimes of flowing waters
The processes and biomass that characterize any ecosystem are fundamentally constrained by the total amount of energy that is either fixed within or delivered across its boundaries. Ultimately, ecosystems may be understood and classified by their rates of total and net productivity and by the seasonal patterns of photosynthesis and respiration....Bernhardt, Emily S.; Heffernan, Jim B.; Grimm, Nancy B.; Stanley, Emily H.; Harvey, Judson; Arroita, M.; Appling, Alison; Cohen, M.J.; McDowell, William H.; Hall, R.O.; Read, Jordan S.; Roberts, B.J.; Stets, Edward; Yackulic, Charles B.
Floodplain trapping and cycling compared to streambank erosion of sediment and nutrients in an agricultural watershed
Floodplains and streambanks can positively and negatively influence downstream water quality through interacting geomorphic and biogeochemical processes. Few studies have measured those processes in agricultural watersheds. We measured inputs (floodplain sedimentation and dissolved inorganic loading), cycling (floodplain soil nitrogen [N] and...Gillespie, Jaimie; Noe, Gregory; Hupp, Cliff R.; Gellis, Allen; Schenk, Edward R.
Unraveling the dynamics of magmatic CO2 degassing at Mammoth Mountain, California
The accumulation of magmatic CO2 beneath low-permeability barriers may lead to the formation of CO2-rich gas reservoirs within volcanic systems. Such accumulation is often evidenced by high surface CO2 emissions that fluctuate over time. The temporal variability in surface degassing is believed in part to reflect a complex interplay...Pfeiffer, Loic; Wanner, Christoph; Lewicki, Jennifer L.
Why large cells dominate estuarine phytoplankton
Surveys across the world oceans have shown that phytoplankton biomass and production are dominated by small cells (picoplankton) where nutrient concentrations are low, but large cells (microplankton) dominate when nutrient-rich deep water is mixed to the surface. I analyzed phytoplankton size structure in samples collected over 25 yr in San...Cloern, James E.
Alternate wetting and drying decreases methylmercury in flooded rice (Oryza sativa) systems
In flooded soils, including those found in rice (Oryza sativa L.) fields, microbes convert inorganic Hg to more toxic methylmercury (MeHg). Methylmercury is accumulated in rice grain, potentially affecting health. Methylmercury in rice field surface water can bioaccumulate in wildlife. We evaluated how introducing aerobic periods into an...Tanner, K. Christy; Windham-Myers, Lisamarie; Marvin-DiPasquale, Mark C.; Fleck, Jacob; Linquist, Bruce A.
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.
What’s New: A new version of the SPARROW code is being developed in the R programming language. The advantage of R is that it is non-proprietary and does not require a license or software cost. The R – SPARROW code is now being completed and should be available early in CY18. Stay Tuned.
SELDM is a database application where users can easily create and run highway-runoff simulations. SELDM simulates storm flows, concentrations, and loads. SELDM calculates the risk of exceeding water-quality criteria with and without user-defined BMPs. SELDM calculates annual runoff loads and is able to do a simple annual lake-loading analysis.
CE-QUAL-W2 is a water quality and hydrodynamic model in 2D (longitudinal-vertical) for rivers, estuaries, lakes, reservoirs and river basin systems. W2 models basic eutrophication processes such as temperature-nutrient-algae-dissolved oxygen-organic matter and sediment relationships.
GCLAS is a program designed primarily to compute daily and annual loadings of constituents transported in streamflow.
Model archive for Wood River Valley groundwater-flow model
The R package wrv is for processing the groundwater-flow model of the Wood River Valley (WRV) aquifer system, south-central Idaho. The groundwater-flow model is described in the associated model report and model archive. Included in the package is MODFLOW-USG version 1.3, a U.S. Geological Survey (USGS) computer code that solves the groundwater-flow equation.
In 1977, the Congress of the United States recognized the need for uniform, current, and reliable information on water use and directed the U.S. Geological Survey (USGS) to establish a National Water-Use Information Program (NWUIP) to complement the Survey's data on the availability and quality of the Nations water resources.
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.
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
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.
USGS storm-tide sensor bolted to a cement jetty on the Atlantic Ocean coast at Fire Island, New York. USGS scientists deployed over 50 sensors along the coast of Maine, New Hampshire, Massachusetts, Rhode Island, Connecticut, New York, New Jersey and Delaware to study a Nor'easter that affected the Northeast in March of 2018.
Land subsidence in California - Approximate location of maximum subsidence in the United States identified by research efforts of Dr. Joseph F. Poland (pictured). Signs on pole show approximate altitude of land surface in 1925, 1955, and 1977. The site is in the San Joaquin Valley southwest of Mendota, California.
This photo shows the approximate location of maximum...
Hot springs can occur in many parts of the world. The water is hot not due to climate, but rather due to geothermal activity underground, such as volcanic activity or active hydrothermal heating from hot material in the ground. Hot springs result from water heated by underground geothermal activity finding its way to the land surface.
This hot spring is located in the far north on a...
This video describes how and where to flag high water marks for a road overflow or broad-crested weir indirect measurement of peak discharge.
Suspended-Sediment Sampling and Turbidity
Here, a U.S. Geological Survey (USGS) hydrographer is collecting a suspended-sediment water sample from the Little Colorado River, a kilometer upstream from the Colorado River, Grand Canyon, Arizona, USA. To gain knowledge of the suspended-sediment characteristics of the entire river (water quality can vary greatly across a...
O Ciclo d'água para Crianças
O Serviço Geológico dos Estados Unidos (em inglês, U.S. Geological Survey, conhecido pela sigla USGS) e a Organização das Nações Unidas para Agricultura e Alimentação (em inglês, Food and Agriculture Organization, instituição conhecida pela sigla FAO) uniram-se para criar um diagrama didático e divertido sobre o ciclo d'água, voltado para...
Vodni krog za otroke, The water cycle for kids, Slovene
U.S. Geological Survey (USGS) ter Organizacija Združenih narodov za prehrano in kmetijstvo (FAO) sta oblikovali diagram vodnega kroga za otroke ter za osnovne in srednje šole.
ວັດທະຈັກ ນໍ້າ ສໍາລັບ ໂຮງຮຽນ - The Water Cycle, Lao
ການສໍາຫຼວດ ພູມສັນຖານ (USGS) ແລະ ອົງການອາຫານ ແລະ ການກະເສດ ຂອງ ສະຫະປະຊາຊາດ (FAO) ໄດ້ສ້າງ ຮູບພາບກ່ຽວກັບ ວັດທະຈັກ ນໍ້າ ສໍາລັບ ໂຮງຮຽນ
El Ciclo del Agua Para Niños
El Servicio Geológico de los Estados Unidos (USGS por sus siglas en inglés) y la Organización de Alimento y Agricultura de las Naciones Unidas (FAO) han colaborado en la creación de un diagrama sobre el ciclo del agua para niños de las escuelas elementales e intermedias.
El Ciclo del Agua
Qué es el ciclo del agua? Fácilmente...
Усны эргэлтийн тухай сургуулиудад
АНУ-ын Геологийн хүрээлэн болон НҮБ-ын Хүнс, хөдөө аж ахуйн байгууллагаас сургуулиудад зориулан энэхүү усны эргэлтийн тайлбарт зургийг бэлтгэв.
Data Will Provide a “Snapshot” of the Eastern Snake River Plain Aquifer
Crews from the U.S. Geological Survey have been in the field for weeks measuring flooding in the Midwest and in the Mississippi River watershed, and more recently flooding and storm tides on the Northern Atlantic coast, as higher temperatures, heavy rain, snowmelt and nor’easters affected numerous states.
Instead of requiring costly dredging to remove sediment buildup behind water reservoirs and diversions, sediment from reservoirs in the Missouri River Basin could actually be used as fracking proppant feedstock, also known as frac sand, according to a recently published U.S. Geological Survey study.
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.
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.
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.
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.
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.
Fayette County Georgia, Water System Director, Lee Pope, discusses water management efforts to alleviate issues downstream.
Our lunchtime "brownbag" seminars are held Tuesdays from 12pm to 1 pm PT. The science lectures are held at the USGS Oregon Water Science Center at 2130 SW 5th Avenue in Portland, OR. The presentations are informal and are open to the public. Please, bring your lunch.
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.
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.