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


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Showing results 401 to 426 of 2141.
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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., 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., 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, 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, 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., 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

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

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., 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, 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, 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., 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., 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., 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., and Lorenz, D.L., 2009, Regional nutrient trends in streams and rivers of the United States, 1993-2003: Environmental Science and Technology, vol. 43, no. 10, p. 3430-3435.  doi: 10.1021/es803664x Available Online

Sprague, L.A., and Gronberg, J.M., 2013, Estimated anthropogenic nitrogen and phosphorus inputs to the land surface of the conterminous United States-1992, 1997, and 2002: U.S. Geological Survey Scientific Investigations Report 2012-5241, 14 p.  Available Online

Sprague, L.A., and Greve, A.I., 2003, Changes in nutrient and pesticide concentrations in urban and agricultural areas of the South Platte River Basin, Colorado, Wyoming, and Nebraska, 1994-2000: U.S. Geological Survey Water Resources Investigations Report 02-4270, 12 p.  Available Online

Sprague, L.A., 2002, Nutrient dynamics in off-stream reservoirs of the lower South Platte River Basin, 1995: U.S. Geological Survey Water Resources Investigations Report 02-4142, 72 p.  Available Online

Spahr. Norman E., Driver, Nancy E., and Stephens, Verlin C., 1996, The Upper Colorado River National Water-Quality Assessment Program surface-water-monitoring network: U.S. Geological Survey Fact Sheet 191-96, 4 p.  Available Online

Spahr, Norman E., Boulger, Robert W., and Szmajter, Richard J., 2000, Water quality at basic fixed sites in the Upper Colorado River Basin National Water-Quality Assessment Study Unit, October 1995-September 1998: U.S. Geological Survey Water-Resources Investigations Report 99-4223, 63 p.  Available Online

Spahr, Norman E., Apodaca, Lori E., Deacon, Jeffrey R., Bails, Jeffrey B., Bauch, Nancy J., Smith, Michelle, and Driver, Nancy E., 2001, Water quality in the Upper Colorado River Basin, Colorado, 1996-98: U.S. Geological Survey Circular 1214, 33 p.  Available Online

Spahr, Norman E., and Deacon, Jeffrey R., 1998, Water-quality characteristics of the Slate and East Rivers, Colorado, during the winter recreational season, December 1996: U.S. Geological Survey Open-File Report 98-279, 9 p.  Available Online

Spahr, Norman E., and Boulger, Robert W., 1997, Interim results of quality- control sampling of surface water for the Upper Colorado River National Water-Quality study unit, water years 1995-96: U.S. Geological Survey Water-Resources Investigations Report 97-4227, 34 p.  Available Online

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