National Water-Quality Assessment (NAWQA) Program

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NAWQA Publications: Complete Bibliography of all NAWQA Publications (back to categories)


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Sprague, L.A., and Nowell, L.H., 2008, Comparison of pesticide concentrations in streams at low flow in six metropolitan areas of the United States: Environmental Toxicology and Chemistry, vol. 27, no. 2, p. 288-298.  doi: 10.1897/07-276 Available Online

Sprague, L.A., Harned, D.A., Hall, D.W., Nowell, L.H., Bauch, N.J., and Richards, K.D., 2007, Response of stream chemistry during base flow to gradients of urbanization in selected locations across the conterminous United States: U.S. Geological Survey Scientific Investigations Report 2007-5083, 132 p.  Available Online

Sprague, L.A., Kimbrough, R.K., Ranalli, T.J., 2002, What happens to nutrients in offstream reservoirs in the lower South Platte River Basin?: U.S. Geological Survey Fact Sheet 044-02, 6 p.  Available Online

Sprague, L.A., Mueller, D.K., Schwarz, G.E., and Lorenz, D.L., 2009, Nutrient trends in streams and rivers of the United States, 1993-2003: U.S. Geological Survey Scientific Investigations Report 2008-5202, 196 p.  Available Online

Sprague, L.A., Zuellig, R.E., and Dupree, J.A., 2006, Effects of urban development on stream ecosystems along the Front Range of the Rocky Mountains, Colorado and Wyoming: U.S. Geological Survey Fact Sheet 2006-3083, 4 p.  Available Online

Sprague, L.A., Zuellig, R.E., and Dupree, J.A., 2006, Effects of urbanization on stream ecosystems in the South Platte River Basin, Colorado and Wyoming: U.S. Geological Survey Scientific Investigations Report 2006-5101-A, 139 p.  Available Online

Sprague, Lori A., and Gronberg, JoAnn M., 2012, Relating management practices and nutrient export in agricultural watersheds of the United States: Journal of Environmental Quality, vol. 41, no. 6, p. 1939-1950.  doi: 10.2134/jeq2012.0073 Available Online

Sprague, Lori A., Clark, Melanie L., Rus, David L., Zelt, Ronald B, Flynn, Jennifer L., and Davis, Jerri V., 2006, Nutrient and Suspended-Sediment Trends in the Missouri River Basin, 1993-2003: U.S. Geological Survey Scientific Investigations Report 2006-5231, 80 p.  Available Online

Sprague, Lori A., Hirsch, Robert M., and Aulenbach, Brent T., 2011, Nitrate in the Mississippi River and its tributaries, 1980 to 2008: Are we making progress?: Environmental Science and Technology, vol. 45, no. 17, p. 7209-7216.  doi: 10.1021/es201221s Available Online

Spruill, T.B., and Bratton, John F., 2007, Estimation of Groundwater and Nutrient Fluxes to the Neuse River Estuary, North Carolina: Estuaries and Coasts (2008), p. 501-520.  Available Online

Spruill, T.B., Showers, W.J., and Howe, S.S., 2002, Application of classification-tree methods to identify nitrate sources in ground water: Journal of Environmental Quality, vol. 31, no. 5, p. 1538-1549.  Available Online

Spruill, T.B., Williams, J.B., Galeone, D.R. and Harned, D.A., 1997, Radon in ground water in Guilford County, North Carolina: U.S. Geological Survey Fact Sheet 147-97, 1 p.  Available Online

Spruill, Timothy B., 2000, Statistical evaluation of effects of riparian buffers on nitrate and ground water quality: Journal of Environmental Quality, vol. 29, no. 5, p. 1523-1538.  Available Online

Spruill, Timothy B., and Galeone, David R. , 2004, Effectiveness of Riparian Buffers in Reducing Nitrate-Nitrogen Concentrations in Ground Water: Water Science and Technology, vol. 49, no 3, p. 63-70.  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. 

Spruill, Timothy B., Eimers, Jo Leslie, and Morey, A. Elizabeth (NC Division of Water Quality), 1997, Nitrate-nitrogen concentrations in shallow ground water of the coastal plain of the Albemarle-Pamlico Drainage Basin, North Carolina and Virginia: U.S. Geological Survey Fact Sheet FS-241-96, 4 p.  Available Online

Spruill, Timothy B., Harned, Douglas A., and McMahon, Gerard, 1995, The Albemarle-Pamlico Drainage National Water-Quality Assessment Study: Background and design: U.S. Geological Survey Open-File Report 95-164, 4 p.  Available Online

Spruill, Timothy B., Harned, Douglas A., Ruhl, Peter M., Eimers, Jo Leslie, McMahon, Gerard, Smith, Kelly E., Galeone, David R., and Woodside, Michael D., 1998, Water quality in the Albemarle-Pamlico Drainage Basin, North Carolina and Virginia, 1992-95: U.S. Geological Survey Circular 1157, 36 p.  Available Online

Spruill, Timothy B., Woodside, Michael D., Harned, Douglas A., McMahon, Gerard, and Eimers, Jody L., 1996, Results of the Albemarle-Pamlico Drainage NAWQA: Nutrients and pesticides in surface water and ground water: Solutions: A Technical Conference on Water Quality, March 19-21,1996 North Carolina State University, p. 24-30. 

Spruill,T.B., Tesoriero, A.J., Mew, Jr., H.E., Farrell, K.M., Harden, S.L., Colosimo, A.B., and Kraemer, S.R., 2005, Geochemistry and Characteristics of Nitrogen Transport at a Confined Animal Feeding Operation in a Coastal Plain Agricultural Watershed, and Implications for Nutrient Loading in the Neuse River Basin, North Carolina, 1999-2002: U.S. Geological Survey Scientific Investigations Report 2004-5283, 66 p.  Available Online

Spurlock, F., Burow, K., and Dubrovsky, N., 2000, Chlorofluorocarbon dating of herbicide-containing well waters in Fresno and Tulare Counties, California: Journal of Environmental Quality, vol.29, no.2, p. 475-483.  Available Online

Squillace, P.J., and Moran, M.J., 2007, Factors associated with sources, transport, and fate of volatile organic compounds and their mixtures in aquifers of the United States: Environmental Science and Technology, vol. 41, no. 7, p. 2123-2130.  doi: 10.1021/es061079w Available Online

Squillace, P.J., and Moran, M.J., 2006, Factors associated with sources, transport, and fate of volatile organic compounds in aquifers of the United States and implications for ground-water management and assessments: U.S. Geological Survey Scientific Investigations Report 2005-5269, 40 p.  Available Online

Squillace, P.J., Moran, M.J., and Zogorski, J.S., 1999, Occurrence of MTBE in ground water of the United States, 1993-98, and a preliminary analysis of explanatory variables: in American Water Works Association Annual Conference, Chicago, Ill., June 20-24, 1999 [Proceedings]: American Water Works Association, CD ROM. 

Squillace, P.J., Zogorski, J.S., and Price, C.V., 1997, Urban land-use study plan for the National Water-Quality Assessment Program, U.S. Geological Survey: in Chilton, John and others., eds., Congress on Groundwater in the Urban Environment, Nottingham, United Kingdom, Sept. 21-27, 1997 [Proceedings]: Netherlands, A.A. Balkema, p. 665-670. 

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