National Water-Quality Assessment (NAWQA) Project

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The National Water-Quality Assessment (NAWQA) Program has produced more than 1,500 reports (complete bibliography) describing how water quality conditions vary locally, regionally, and nationally; whether conditions are getting better or worse over time; and how natural features and human activities affect these conditions. Conditions also were compared to national water-quality standards, guidelines, and benchmarks to assess the potential effects on drinking water and aquatic life. Most of these reports can be accessed on-line through the topical and geographical searches listed below.


Quick Links
to selected NAWQA reports:

General Interest Reports - summaries of relevant scientific information in a form designed for general and scientific audiences.

Fact Sheets - 2-6 page summaries of selected topics or report highlights

SPARROW modeling publications

National NAWQA Publications

NAWQA publications by state:

Image Map - U.S. Map

Recently Added:

Falcone, J.A., Murphy, J.C., and Sprague, L.A., 2019, Regional patterns of anthropogenic influences on streams and rivers in the conterminous United States, from the early 1970s to 2012: Journal of Land Use Science,   Available Online

Schmidt, T.S., Van Metre, P.C., Carlisle, D.M., 2019, Linking the Agricultural Landscape of the Midwest to Stream Health with Structural Equation Modeling: Environ. Sci. Technol., 53 (1), pp 452-462.  DOI: 10.1021/acs.est.8b04381 Available Online

Coles, J.F., Riva-Murray, K., Van Metre, P.C., Button, D.T., Bell, A.H., Qi, S.L., Journey, C.A., and Sheibley, R.W., 2019, Design and methods of the U.S. Geological Survey Northeast Stream Quality Assessment (NESQA), 2016: U.S. Geological Survey Open-File Report 2018-1183, 46 p. Available Online

Eberts, S.M., Woodside, M.D., Landers, M.N., and Wagner, C.R., 2018, Monitoring the pulse of our Nation's rivers and stream - The U.S. Geological Survey streamgaging network: U.S. Geological Survey Fact Sheet 2018-3081, 2 p. Available Online

Zuellig, R.E. and Carlisle, D.M., 2018, Effects of Antecedent Streamflow and Sample Timing on Trend Assessments of Fish, Invertebrate, and Diatom Communities: Journal of the American Water Resources Association, Available Online

Falcone, J.A., 2018, Changes in anthropogenic influences on streams and rivers in the conterminous U.S. over the last 40 years, derived for 16 data themes: U.S. Geological Survey data release, Available Online

Ziegeweid, J.R., Zigler, S.J., Maki, R.P., Karns, B.N., and Love, S.A., 2018, Method comparisons for determining concentrations of metals in water samples used in studies of fish migratory histories: U.S. Geological Survey Scientific Investigations Report 2018-5143, 20 p. Available Online

Baker, N.T., 2018, Estimated annual agricultural pesticide use by crop group for states of the conterminous United States, 1992-2016: U.S. Geological Survey data release, Available Online

Baker, N.T., 2018, Preliminary estimated annual agricultural pesticide use for counties of the conterminous United States, without California Data, 2017: U.S. Geological Survey data release, Available Online

Baker, N.T., 2018, Preliminary estimated annual agricultural pesticide use for counties of the conterminous United States, 2016: U.S. Geological Survey data release, Available Online

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