National Water-Quality Assessment (NAWQA) Program
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Showing results 26 to 51 of 606.
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Martin, J.D., and Eberle, Michael, 2011, Adjustment of pesticide concentrations for temporal changes in analytical recovery, 1992-2010: U.S. Geological Survey Data Series 630, 11 p. Available Online
Burkart, M.R., Kolpin, D.W., Jaquis, R.J., and Cole, K.J., 1999, Agrichemicals in ground water of the midwestern USA: Journal of Environmental Quality, vol. 28, no. 6, p. 1908-1915. Available Online
Kolpin, Dana W., 1997, Agricultural chemicals in ground water of the midwestern United States: Relations to land use: Journal of Environmental Quality, vol. 26, no. 4, July-August 1997, p. 1025-1037. Available Online
Vogel, J.R., and Linard, J.I., 2011, Agricultural herbicide transport in a first-order intermittent stream, Nebraska, USA: Applied Engineering in Agriculture, vol. 27, no. 1, p. 63-74.
Majewski, Michael S., Foreman, William T., Goolsby, Donald A., and Nakagaki, Naomi, 1998, Airborne pesticide residues along the Mississippi River: Environmental Science & Technology, vol. 32, no. 23, p. 3689-3698. doi: 10.1021/es9802403 Available Online
Calhoun, Daniel L., Gregory, M.B., and Weyers, H.S., 2008, Algal and invertebrate community composition along agricultural gradients: A comparative study from two regions of the Eastern United States: U.S. Geological Survey Scientific Investigations Report 2008-5046, 33 p. Available Online
Porter, Stephen D., 2008, Algal Attributes: An Autecological Classification of Algal Taxa Collected by the National Water-Quality Assessment Program: U.S. Geological Survey Data Series 329, 18 p. Available Online
Carlisle, Daren M., Wolock, David M., and Meador, Michael R., 2010, Alteration of streamflow magnitudes and potential ecological consequences: a multiregional assessment: Frontiers in Ecology and the Environment (e-View), 11 p., online. doi:10.1890/100053 Available Online
Cuffney, T.F., Bilger, M.D., and Haigler, A.M., 2007, Ambiguous taxa: effects on the characterization and interpretation of invertebrate assemblages: Journal of the North American Benthological Society, vol. 26, no. 2, p. 286-307. doi: 10.1899/0887-3593(2007)26[286:ATEOTC]2.0.CO;2 Available Online
Robertson, Dale M., Saad, David A., and Wieben, Ann M., 2001, An alternative regionalization scheme for defining nutrient criteria for rivers and streams: U.S. Geological Survey Water-Resources Investigations Report 01-4073, 57 p. Available Online
Jurgens, Bryant C., McMahon, Peter B., Chapelle, Francis H., and Eberts, Sandra M., 2009, An Excel® workbook for identifying redox processes in ground water: U.S. Geological Survey Open-File Report 2009-1004, 8 p. Available Online
Shih, Jhih-Shyang, Alexander, R.B., Smith, R.A., Boyer, E.W., Schwarz, G.E., and Chung, Susie, 2010, An initial SPARROW model of land use and in-stream controls on total organic carbon in streams of the conterminous United States: U.S. Geological Survey Open-File Report 2010-1276, 22 p. Available Online
Leahy, P.P., Ryan, B.J., and Johnson, A. Ivan, 1993, An introduction to the U.S. Geological Survey's National Water-Quality Assessment Program: American Water Resources Association Water Resources Bulletin July/August 1993 vol. 29, no. 4, p. 529-532.
Kingsbury, James A., Delzer, Gregory C., and Hopple, Jessica A., 2008, Anthropogenic Organic Compounds in Source Water of Nine Community Water Systems that Withdraw from Streams, 2002-05: U.S. Geological Survey Scientific Investigations Report 2008-5208, 68 p. Available Online
Hopple, J.A., Delzer, G.C., and Kingsbury, J.A., 2009, Anthropogenic organic compounds in source water of selected community water systems that use groundwater, 2002-05: U.S. Geological Survey Scientific Investigations Report 2009-5200, 74 p. Available Online
Elder, J.F., 1989, Applicability of ambient toxicity testing to national or regional water-quality assessment: U.S. Geological Survey Open-File Report 89-55 and Circular 1049, 102 p. Available Online
Elder, J.F., 1989, Applicability of ambient toxicity testing to national or regional water-quality assessment: U.S. Geological Survey Open-File Report 89-55 and Circular 1049, 102 p. Available Online
Asher, W.E., Luo, Wentai, Campo, K.W., Bender, D.A., Robinson, K.W, Zogorski, J.S., and Pankow, J.F., 2007, Application of a source apportionment model in consideration of volatile organic compounds in an urban stream: Environmental Toxicology and Chemistry, vol. 26, no. 8, p. 1606-1613. doi: 10.1897/06-557 Available Online
Brown, Juliane B., 2011, Application of the SPARROW watershed model to describe nutrient sources and transport in the Missouri River Basin: U.S. Geological Survey Fact Sheet 2011-3104, 4 p. Available Online
Brown, C.J., Starn, J.J., Stollenwerk, K.G., Mondazzi, R.A., and Trombley, T.J., 2009, Aquifer chemistry and transport processes in the zone of contribution to a public-supply well in Woodbury, Connecticut, 2002-06: U.S. Geological Survey Scientific Investigations Report 2009-5051, 158 p. Available Online
Brown, C.J., Jurgens, B.C., Katz, B.G., Landon, M.K., and Eberts, S.M., 2007, Arsenic and uranium in four aquifer settings: occurrence, distribution, and mechanisms for transport to supply wells: 2007 NGWA Naturally Occurring Contaminants Conference: Arsenic, Radium, Radon, Uranium, March 22-23, 2007, Charleston, South Carolina., 15 p. Available Online
Chapell, W.R., Abernathy, C.O., and Calderon, R.L., eds., 1999, Arsenic Exposure and Health Effects: Elsevier Science B.V. ISBN-13: 978-0-08-043648-7, 440 p. Available Online
Welch, Alan, Ryker, Sarah, Helsel, Dennis, and Hamilton, Pixie, 2001, Arsenic in ground water of the United States: An overview: Water Well Journal, February 2001, p. 30-33.
Welch, Alan H., Westjohn, D.B. Helsel, Dennis R., and Wanty, Richard B., 2000, Arsenic in ground water of the United States: Occurrence and geochemistry: Ground Water, vol. 38, no. 4, p. 589-604. Available Online
Welch, Alan H., Helsel, Dennis R., Focazio, Michael J., and Watkins, Sharon A., 2000, Arsenic in ground water supplies of the United States: In: Arsenic exposure and health effects, Chapell, W.R., Abernathy, C.O., and Calderon, R.L., eds., Elsevier Science B.V., ISBN-13: 978-0-08-043648-7, 475 p. Available Online
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