USGS Water-Quality Information
USGS personnel collect a water-quality sample on the Missouri River. USGS/Photo by Kelly Brady.
Water Quality Data
Today's Water Conditions
Get continuous real-time water-quality measurements from Water-Quality Watch maps.
Water Quality Portal (WQP)
Get current and historical USGS and EPA water-quality data at the WQP.
Get stream ecosystem aquatic bioassessment data from BioData.
For More Data
USGS in Your Area
USGS Water Science Centers are located in each state.
Selected Water-Quality Publications
National Field Manual for the Collection of Water-Quality Data
Selected USGS Water-Quality Publications
Fact Sheets (FS)
A Primer on Water Quality, USGS Fact Sheet 027-01.
NASQAN--A Program to Monitor the Water Quality of the Nation's Large Rivers, Fact Sheet FS-055-97
Techniques and Methods (TM) & Techniques of Water-Resources Investigations (TWRI)
Procedures for Developing Models To Predict Exceedances of Recreational Water-Quality Standards at Coastal Beaches, U.S. Geological Survey Techniques and Methods book 6, chap. B5.
Guidelines and Standard Procedures for Continuous Water-Quality Monitors: Station Operation, Record Computation, and Data Reporting, U.S. Geological Survey Techniques and Methods 1-D3.
Scientific Investigation Reports (SIR) & Water-Resources Investigations Reports (WRIR)
Guidelines for Design and Sampling for Cyanobacterial Toxin and Taste-and-Odor Studies in Lakes and Reservoirs, U.S. Geological Survey Scientific Investigations Report 2008-5038.
StreamVOC--A Deterministic Source-Apportionment Model to Estimate Volatile Organic Compound Concentrations in Rivers and Streams, U.S. Geological Survey Scientific Investigations Report 2006-5110.
Comparability of Suspended-Sediment Concentration and Total Suspended Solids Data, Water-Resources Investigations Report WRIR 00-4191 (pdf=1Mb) and Adjustment of Total Suspended Solids Data for Use in Sediment Studies (pdf=2Mb).
A Retrospective Analysis on the Occurrence of Arsenic in Ground-Water Resources of the United States and Limitations in Drinking-Water-Supply Characterizations, Water-Resources Investigations Report 99-4279.
External Quality-Assurance Results for the National Atmospheric Deposition Program/National Trends Network, 1995-96, Water-Resources Investigations Report 99-4072.
USGS Guidelines and Standard Procedures for Studies of Ground-Water Quality: Selection and Installation of Wells, and Supporting Documentation Water-Resources Investigations Report 96-4233
The Computer Program Estimate Trend (ESTREND), A System for the Detection of Trends in Water-Quality Data, Water-Resources Investigations Report 91-4040
Open-File Reports (OFR)
A Guide to the Proper Selection and Use of Federally Approved Sediment and Water-Quality Samplers, U.S. Geological Survey Open-File Report 2005-1087.
New Reporting Procedures Based on Long-Term Method Detection Levels and Some Considerations for Interpretation of Water-Quality Data Provided by the U.S. Geological Survey National Water Quality Laboratory, Open-File Report 99-193.
Water Supply Papers (WSP)
Study and Interpretation of the Chemical Characteristics of Natural Water, Water Supply Paper 2254
Professional Paper (PP)
Transport, Behavior and Fate of Volatile Organic Compounds in Streams, Professional Paper 1589
Abstracts, Articles, and Other Publications
More Than Obvious: Better Methods for Interpreting Nondetect Data: Helsel, Dennis R., 2005, Environmental Science and Technology, A-Pages, v. 39, no. 20, p. 419A-423A.
Comparison of Seven Protocols to Identify Fecal Contamination Sources Using Escherichia coli (pdf), USGS-authored article in Environmental Science and Technology.
A Comparison of Load Estimates Using Total Suspended Solids and Suspended-Sediment Concentration Data, in American Society of Civil Engineering's Proceeding of the World Water and Environmental Resources Congress, May 20-24, 2001 (pdf = 67 Kb)
The proceedings of the technical meeting, "Animal Feeding Operations: Effects on Hydrologic Resources and the Environment," held in Fort Collins, CO, Aug. 30 - Sept. 1, 1999, are online as USGS Open-File Report 00-204 on the Proceedings page of the AFO Web site.
Report on hypoxia in the Gulf of Mexico: Flux and Sources of Nutrients in the Mississippi-Atchafalaya River Basin (see Topic 3).
The Solubility of Nitrogen, Oxygen and Argon in Water and Seawater, Weiss, 1970 (pdf).
Additional USGS Water-Quality-Related Publications
Water-Quality-Related Publications from other Sources
National Irrigation Water Quality Program - Bibliography of Published Studies
The National Park Service Environmental Contaminants Encyclopedia
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