National Water-Quality Assessment (NAWQA) Project
More Information about Methods
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Carter, Donna S., 1996, Determination of atrazine and its major degradation products in soil pore water by solid-phase extraction, chemical derivation, and gas chromatography/mass spectrometry: U.S. Geological Survey Open-File Report 96-459, 12 p. Available Online
Kratzer, Charles R., and Biagtan, Rhodora N., 1997, Determination of traveltimes in the Lower San Joaquin River Basin, California, from dye-tracer studies during 1994-1995: U.S. Geological Survey Water-Resources Investigations Report 97-4018, 20 p. Available Online
Pankow, James F., Luo, Wentai, Isabelle, Lorne M., Bender, David A., and Baker, Ronald J., 1998, Determination of wide range of volatile organic compounds (VOCs) in ambient air using multisorbent adsorption/thermal desorption (ATD) and gas chromatography/mass spectrometry (GC/MS): Analytical Chemistry, vol. 70, no. 24, p. 5213-5221. Available Online
Panshin, Sandra Y., 1997, Determining concentrations of 2-bromoallyl alcohol and dibromopropene in ground water using quantitative methods: U.S. Geological Survey Open-File Report 97-43, 7 p. Available Online
Stribling, J.B., Moulton II, S.R., and Lester, G.T., 2003, Determining the quality of taxonomic data: North American Benthological Society, vol. 22, p. 621-631 Available Online
McMahon, Gerard, Gregonis, Steven M., Waltman, Sharon W., Omernik, James M., Thorson, Thor D., Freeouf, Jerry A., Rorick, Andrew H., and Keys, James E., 2001, Developing a spatial framework of common ecological regions for the conterminous United States: Environmental Management, vol. 28, no. 3, p. 293-316. Available Online
Waite, Ian R., 2013, Development and application of an agricultural intensity index to invertebrate and algal metrics from streams at two scales: Journal of the American Water Resources Association, vol. 49, no. 2, p. 431-448. doi: 10.1111/jawr.12032 Available Online
Toccalino, P.L., 2007, Development and application of health-based screening levels for use in water-quality assessments: U.S. Geological Survey Scientific Investigations Report 2007-5106, 12 p. Available Online
Potapova, Marina, and Carlisle, D.M., 2011, Development and application of indices to assess the condition of benthic algal communities in U.S. streams and rivers: U.S. Geological Survey Open File Report 2011-1126, 40 p. Available Online
Toccalino, Patricia, Nowell, Lisa, Wilber, William, Zogorski, John, Donohue, Joyce, Eiden, Catherine, Krietzman, Sandra, and Post, Gloria, 2003, Development of health-based screening levels for use in state- or local- scale water-quality assessments: U.S. Geological Survey Water-Resources Investigations Report 03-4054, 22 p. Available Online
Potapova, M.G., Charles, D.F., Ponader, K.C., and Winter, D.M., 2007, Diatom metrics for monitoring eutrophication in rivers of the United States: Ecological Indicators, vol. 7, no. 1, p. 48-70. doi: 10.1016/j.ecolind.2005.10.001 Available Online
Chapelle, F.H., Bradley, P.M., Thomas, M.A., and McMahon, P.B., 2009, Distinguishing iron-reducing from sulfate-reducing conditions: Ground Water, vol. 47, no. 2, March-April 2009, p. 300-305. Available Online
McCarthy, K.A., and Johnson, H.M., 2009, Effect of agricultural practices on hydrology and water chemistry in a small irrigated catchment, Yakima River basin, Washington: U.S. Geological Survey Scientific Investigations Report 2009-5030, 22 p. Available Online
Spruill, Timothy B., and Galeone, David R., 2000, Effectiveness of riparian buffers in reducing nitrate-nitrogen concentrations in ground water: International Conference on Riparian Ecology and Management in Multi-Land Use Watersheds, American Water Resources Association, p. 119-124.
Meador, Michael R., and McIntyre, Julie P., 2003, Effects of electrofishing gear type on spatial and temporal variability in fish community sampling: Transactions of the American Fisheries Society, vol. 132, p. 709-716. doi: 10.1577/T01-135 Available Online
Foster, G.D., and Rogerson, P.F., 1990, Enhanced preconcentration of pesticides from water using the goulden large-sample extractor: International Journal of Environmental Analytical Chemistry, vol. 41, p. 105-117.
Alexander, R.B., Brakebill, J.W., Brew, R.E., and Smith, R.A., 1999, ERF1-Enhanced River Reach File 1.2: U.S. Geological Survey Open-File Report 99-457, map. Available Online
Majewski, M.S., 1997, Error evaluation of methyl bromide aerodynamic flux measurements, Chapter 12: in Seiber, J.N., and others, eds, Fumigants--environmental fate, exposure, and analysis: ACS Symposium Series, vol. 652, p. 135-153.
Fox, Garey A., Thelin, Gail P., Sabbagh, John W., and Kelly, Iain D., 2008, Estimating watershed level nonagricultural pesticide use from golf courses using geospatial methods: Journal of the American Water Resources Association, vol. 44, no. 6, p. 1363-1372. doi: 10.1111/j.1752-1688.2008.00229.x Available Online
Nakagaki, Naomi, and Wolock, D.M., 2005, Estimation of agricultural pesticide use in drainage basins using land cover maps and county pesticide data: U.S. Geological Survey Open-File Report 2005-1188, 46 p. Available Online
Chang, Ming, Kennen, Jonathan G., and Del Corso, Ellyn, 2000, Evaluating temporal changes in stream condition in three New Jersey river basins by using an index of biotic integrity: Bulletin New Jersey Academy of Sciences, vol. 45, p. 1-12. Available Online
Meador, M.R., Whittier, T.R., Goldstein, R.M., Hughes, R.M., and Peck, D.V., 2008, Evaluation of an index of biotic integrity approach used to assess biological condition in western US streams and rivers and varying spatial scales: Transactions of the American Fisheries Society, v. 137, p. 13-22. doi: 10.1577/T07-054.1 Available Online
Capel, Paul D., and Larson, Steven J., 1996, Evaluation of selected information on splitting devices for water samples: U.S. Geological Survey Water-Resources Investigations Report 95-4141, 103 p. Available Online
Robertson, Dale M., 1998, Evaluation of the surface-water sampling design in the Western Lake Michigan Drainages in relation to environmental factors affecting water quality at base flow: U.S. Geological Survey Water-Resources Investigations Report 98-4072, 53 p. Available Online
Lenz, Bernard N., 1997, Feasibility of combining two aquatic benthic macroinvertebrate community data bases for water-quality assessment: U.S. Geological Survey Fact Sheet FS-132-97, 4 p. Available Online
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