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USGS Water-Quality Information

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 [Photo: USGS scientists collect water-quality samples.]

USGS personnel collect a water-quality sample on the Missouri River. USGS/Photo by Kelly Brady.


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Water Quality Data

National Water Information System (NWIS)

NWIS provides current and historical water-quality data.

Today's Water Conditions

Water-Quality Watch provides continuous real-time water-quality measurements.
[Sample Water-Quality Watch Map]

Water-Quality Web Services

Web services automate the sharing of USGS and USEPA water-quality monitoring data.

For More Data

Additional water-quality data resources are available.

USGS in Your Area

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.

Water-Quality Methods & Techniques

Field Methods & Equipment

Field Methods & Techniques

Methods Development


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Analytical Methods

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Computer Modeling & Software (USGS)

Geochemical & water-quality software

Additional resources

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Page Contact Information: USGS Office of Water Quality
Page Last Modified: Tuesday, 04-Feb-2014 14:11:03 EST