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., 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

Spahr, N.E., Mueller, D.K., and Wolock, D.W., Hitt, K.J., and Gronberg, J.M., 2010, Development and application of regression models for estimating nutrient concentrations in streams of the conterminous United States, 1992-2001: U.S. Geological Survey Scientific Investigations Report 2009-5199, 22 p.  Available Online

Spahr, N.E., and Wynn, K.H., 1997, Nitrogen and phosphorus in surface waters of the Upper Colorado River Basin: Journal of the American Water Resources Association, vol. 33, no. 3, p. 547-560.  doi: 10.1111/j.1752-1688.1997.tb03531.x Available Online

Sorenson, Stephen K., ed., 1994, Proceedings abstracts American Water Resources Association's symposium on the National Water-Quality Assessment (NAWQA) Program--November 7-9,1994 Chicago, Illinois: U.S. Geological Survey Open-File Report 94-397, 21 p.  Available Online

Soltero, S., Garcia, A.M., Cuffney, T., and McMahon, G., 2010, Effects of urbanization on stream ecosystems (Spanish EUSE Radio WALO 1): U.S. Geological Survey Multimedia Gallery Home Audio 368, 13 minutes.  Available Online

Soltero, S., Diaz, P., Douglas, R. and Ortiz, M., 2010, Effects of urbanization on stream ecosystems (Spanish EUSE Radio WALO 2): U.S. Geological Survey Multimedia Gallery Home Audio 384, 33 minutes.  Available Online

Smoot, J.L., Liebermann, T.D., Evaldi, R.D., and White, K.D., 1995, Water-quality assessment of the Kentucky River Basin, Kentucky - analysis of available surface-water-quality data through 1986: U.S. Geological Survey Water Supply Paper 2351-B, 194 p.  Available Online

Smoot, J.L., Liebermann, T.D., Evaldi, R.D., and White, K.D., 1991, Surface- water-quality assessment of the Kentucky River Basin in Kentucky: Analysis of available information through 1986: U.S. Geological Survey Open-File Report 90-360, 209 p.  Available Online

Smith, Stephen B., Donahue, Anne P., Lipkin, Robin J., Blazer, Vicki S., Schmitt, Christopher J., and Goede, Ronald W., 2002, Illustrated field guide for assessing external and internal anomalies in fish: U.S. Geological Survey Information and Technology Report USGS/BRD/ITR-2002-0007, 46 p. 

Smith, Stephen B., 2000, Altered endocrine biomarkers in selected fish species in the Hudson River, New York: U.S. Geological Survey Fact Sheet FS-113-00, 2 p. 

Smith, Stephen B., 1998, Investigations of endocrine disruption in aquatic systems associated with the National Water-Quality Assessment (NAWQA) Program: U.S. Geological Survey Fact Sheet FS-081-98, 4 p.  Available Online

Smith, Richard A., Schwarz, Gregory E., and Alexander, Richard B., 1997, Regional interpretation of water-quality monitoring data: Water Resources Research, December 1997, vol. 33, no. 12, p. 2781-2798.  Available Online

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