National Water-Quality Assessment (NAWQA) Program

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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


National NAWQA Publications

NAWQA publications by state:

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Recently Added:

Baker, N.T., and Stone,W.W., 2014, Annual agricultural pesticide use for midwest stream-quality assessment, 2012-13: U.S. Geological Survey Data Series 863, pamphlet, 4 tables, 17 p.  Available Online

Stets, E.G., Kelly, V.J., Crawford, C.G., 2014, Long-term trends in alkalinity in large rivers of the conterminous US in relation to acidification, agriculture, and hydrologic modification: Science of The Total Environment, Volumes 488-489, 1 August 2014, p. 280-289.  DOI: 10.1016/j.scitotenv.2014.04.054 Available Online

Gronberg, J.M., Ludtke, A.S., and Knifong, 2014, Estimates of inorganic nitrogen wet deposition from precipitation for the conterminous United States, 1955-84: U.S. Geological Survey Scientific Investigations Report 2014-5067, 18 p.  http://dx.doi.org/10.3133/sir20145067 Available Online

Anning, D.W, and Flynn, M.E., 2014, Dissolved-solids sources, loads, yields, and concentrations in streams of the conterminous United States: U. S. Geological Survey Scientific Investigations Report 2014-5012, 101 p.  http://dx.doi.org/10.3133/sir20145012 Available Online

Nolan, B.T., Gronberg, J.M., Faunt, C.C., Eberts, S.M., Belitz, K., 2014, Modeling Nitrate at Domestic and Public-Supply Well Depths in the Central Valley, California: Environmental Science & Technology,   DOI: 10.1021/es405452q Available Online

Burow, K.R., and Belitz, Kenneth, 2014, Groundwater studies - Principal aquifer surveys: U.S. Geological Survey Fact Sheet 2014-3024, 2 p.  http://dx.doi.org/10.3133/fs20143024 Available Online

Waite, I.R., Kennen, J.G., May, J.T., Brown, L.R., Cuffney, T.F., et al., 2014, Stream Macroinvertebrate Response Models for Bioassessment Metrics: Addressing the Issue of Spatial Scale: PLoS ONE 9(3): e90944,   doi:10.1371/journal.pone.0090944 Available Online

Robertson, D.M., and Saad, D.A., 2011, Nutrient Inputs to the Laurentian Great Lakes by Source and Watershed Estimated Using SPARROW Watershed Models: JAWRA Journal of the American Water Resources Association, 47, p. 1011-1033.  DOI: 10.1111/j.1752-1688.2011.00574.x Available Online

Green, C.T., Bekins, B.A., Kalkhoff, S.J., Hirsch, R.M., Liao, L., and Barnes, K.K., 2014, Decadal surface water quality trends under variable climate, land use, and hydrogeochemical setting in Iowa, USA: Water Resour. Res., 50,   doi:10.1002/2013WR014829 Available Online

Murphy, J.C., Hirsch, R.M., and Sprague, L.A., 2014, Antecedent flow conditions and nitrate concentrations in the Mississippi River basin: Hydrology and Earth System Sciences, 18, p. 967-979.  doi:10.5194/hess-18-967-2014 Available Online

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