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USGS Surface Water Information

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New & Noteworthy

2008 Streamflow Summary

Threatened and Recently Distcontinued Streamgages

USGS Water Watch

Map of real-time streamflow compared to historical streamflow for the day of the year (United States).

[Image: USGS map of real-time streamflow.]

USGS in Your State

USGS Water Science Centers are located in each state.

[Map: 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 and Pacific Islands New York Vermont New Hampshire Maine Massachusetts South Carolina North Carolina Rhode Island Virginia Connecticut New Jersey Maryland-Delaware-D.C.

Other Water Sites

Office of Ground Water

Office of Water Quality

Office of Hydrologic Research

Selected USGS Surface-Water Programs & Activities

National Streamflow Information Program (NSIP)


The USGS operates and maintains approximately 7,500 streamgages which provide long-term, accurate, and unbiased information on streamflow to meet the needs of many diverse users.

National Streamflow Statistics (NSS) Program


The NSS Program is a computer program that replaces the National Flood Frequency Program (NFF) to provide simple methods of estimating flood-peak discharges and low flow frequency/duration discharges.
  • National Flood Freqency (NFF) Program estimates of the magnitude and frequency of flood-peak discharges and flood hydrographs are used for a variety of purposes, such as the design of bridges, culverts, and flood-control structures, and for the management and regulation of flood plains. These estimates are often needed at ungaged sites where no observed flood data are available.

Streamstats


StreamStats is a Web-based Geographic Information System (GIS) that provides users with access to an assortment of analytical tools that are useful for water-resources planning and management, and for engineering design applications, such as the design of bridges.

Hydroacoustics


The USGS has been involved in developing and using acoustic flow measurement technology since the late 1960s to improve the accuracy of an efficiency of streamflow measurements.

USGS Office of Global Change: Welcome


What is Climate Change? The USGS strives to understand how the earth works and to anticipate changes in how the earth functions. To accomplish this, USGS science aims to understand the interrelationships among earth surface processes, ecological systems, and human activities. This includes understanding current changes in the context of pre-historic and recent earth processes, distinguishing between natural and human-influenced changes, and recognizing ecological and physical responses to changes in climate.

Storm-Tide Monitoring


The USGS developed a mobile storm-surge network to capture information of the timing, extent, and magnitude of storm tide.

Watershed Modeling


Modeling of watershed response to normal and extreme climatic conditions or to changes in the physical conditions of a watershed requires the simulation of a variety of complex hydrologic processes and process interactions.

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Page Last Modified: Monday, 26-Oct-2009 12:45:51 EDT