Water Resources of the United States


WATER DATA FOR THE NATION

National Water Information System

View current and historical streamflow, ground-water level, and water-quality data

Today's Water Conditions

View comparisons of current and historical conditions using maps

Click map to go to current water resources conditions in the U.S.

WATER SCIENCE SPECIALTIES

WATER SCIENCE IN YOUR AREA

USGS Water Science Centers are located in each state

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USGS also conducts many regional studies

Techniques

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USGS In Your State (clickable)There is a USGS Water Science Center office in each State.
Washington Oregon California Idaho Nevada Montana Wyoming Utah Colorado Arizona New Mexico North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Missouri Arkansas Louisiana Wisconsin Illinois Mississippi Michigan Indiana Ohio Kentucky Tennessee Alabama Pennsylvania West Virginia Georgia Florida Caribbean Alaska Hawaii New York Vermont New Hampshire Maine Massachusettes South Carolina North Carolina Rhode Island Virginia Connecticut New Jersey Maryland-Delaware-D.C.

Cooperative Water Program

Cooperative Water Program Supports National Networks

The Cooperative Water Program provides the foundation for the Water Mission Area’s strong and robust water monitoring networks (quantity and quality), including, for example collection of data at more than 75% of the Nation’s 7,700 streamgages. Extensive efforts are made to secure continued operation of USGS streamgages; however, some are considered for discontinuation due to funding (see listing of threatened streamgages).

About 95 percent of the streamgages record and transmit data in real time and thereby address a myriad of issues, including real-time forecasting of rising stream levels and issuing of flood warnings by the National Weather Service to protect lives and property.

The Cooperative Water Program also supports groundwater level networks (including more than 8,000 observation wells) and real-time transmission, which is particularly important for water management during times of drought.

The Program supports water-quality collection at nearly 4,000 stream sites and wells.

Real-time water-quality monitoring of surface water and groundwater is increasing each year. USGS models linked to the real-time parameters, such as turbidity, are used to estimate other constituents of interest that cannot be measured in real time, such sediment and bacteria—information which is used by water suppliers to manage and regulate reservoirs and water withdrawals on a day-to-day basis.

groundwater platformreal-time sensor

Real-time groundwater levels, such as measured at this platform in North Carolina, are critical for managers during times of drought (left). Real-time water-quality sensors measure pH, water temperature, dissolved oxygen, specific conductance, and turbidity which can change quickly, particularly before, during, and after storms (right).

 

Featured Networks

thumbnail new Real-Time Data on Streams, Lakes, and Groundwater throughout Kansas – Continuous real-time information on streams, lakes, and groundwater is an important Kansas resource that can safeguard lives and property, and ensure adequate water resources for a healthy State economy. USGS operates approximately 230 water-monitoring stations at Kansas streams, lakes, and groundwater sites. Most of these stations are funded cooperatively in partnerships with local, tribal, State, or other Federal agencies. The USGS real-time water- monitoring network provides long-term, accurate, and objective information that meets the needs of many customers. Whether the customer is a water-management or water-quality agency, an emergency planner, a power or navigational official, a farmer, a canoeist, or a fisherman, all can benefit from the continuous real-time water information gathered by the USGS. (Fact Sheet)

 

thumbnailMonitoring Groundwater Levels in Drinking Water Wells in Idaho –USGS, in cooperation with the Idaho Department of Water Resources, are measuring and assessing groundwater levels in more than 1,300 private and public wells throughout southern Idaho's eastern Snake River Plain. The eastern Snake River Plain aquifer, with an estimated volume of 200 billion cubic feet, is the area's chief source of drinking water, provides irrigation for one million acres of farmland, and is the water source for the state's aquaculture industry. For more information about this study, please contact either Sean Vincent at the Idaho Department of Water Resources or Annette Campbell at the USGS Idaho Water Science Center. (Press release)

 

thumbnailWater-quality super station in Florence, Illinois –A "multi-parameter, water-quality super station" has been recently implemented on the Illinois River at Florence, Illinois in cooperation with the Illinois Environmental Protection Agency, Illinois Department of Natural Resources, and the U.S. Army Corps of Engineers. The station measures river stage, water temperature, pH, conductivity, dissolved oxygen, turbidity, nitrate, suspended solids, backscatter for sediment, sediment size and quantity, and phosphate. Much of the data are in real time; access data at: http://waterdata.usgs.gov/il/nwis/uv/?site_no=05586300&PARAmeter_cd=00400,00095,00010,00300,99133 (Contact: Paul Terrio, pjterrio@usgs.gov, (217) 328-9736 and Gary Johnson, gjohnson@usgs.gov, (217) 328-9720)

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