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NAWQA Publications: Nutrients (back to categories)

More Information about Nutrients
Nutrients National Synthesis
  |   Effects of Nutrient Enrichment on Stream Ecosystems  |   Sources, Transport, and Fate of Agricultural Chemicals


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Showing results 101 to 126 of 682.
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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., 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

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, 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

Smith, Richard A., Alexander, Richard B., Tasker, Gary D., Price, Curtis V., Robinson, Keith W., and White, Dale A., 1993, Statistical modeling of water-quality in regional watersheds: Watershed '93, p. 751-754. 

Slattery, R.N., and Fahlquist, Lynne, 1997, Water-quality summary of the San Marcos springs Riverine system, San Marcos, Texas, July-August 1994: U.S. Geological Survey Fact Sheet FS-059-97, 4 p.  Available Online

Skrobialowski, Stanley C., Mize, Scott V., and Demcheck, Dennis K., 2004, Environmental setting, water quality, and ecological indicators of surface-water quality in the Mermentau River Basin, southwestern Louisiana, 1998-2001: U.S. Geological Survey Water-Resources Investigations Report 03-4185, 73 p.  Available Online

Skrobialowski, Stanley C., 1996, Water-quality assessment of the Albemarle- Pamlico Drainage Basin, North Carolina and Virginia--A summary of selected trace element, nutrient, and pesticide data for bed sediments, 1969-90: U.S. Geological Survey Water-Resources Investigations Report 96-4104, 33 p.  Available Online

Skinner, K.D., and Rupert, M.G., 2012, Numerical model simulations of nitrate concentrations in groundwater using various nitrogen input scenarios, mid-Snake region, south-central Idaho: U.S. Geological Survey Scientific Investigations Report 2012-5237, 30p.  Available Online

Shipp, Allison A., 1995, Water-quality assessment in the Trinity River Basin, Texas, nutrients concentrations in streams winter and spring 1994: U.S. Geological Survey Fact Sheet 231-95, 2 p.  Available Online

Shelton, Larry R., and Capel, Paul D., 1994, Guideline for collecting and processing samples of stream bed sediment for analysis of trace elements and organic contaminants for the National Water-Quality Assessment Program: U.S. Geological Survey Open-File Report 94-458, 20 p.  Available Online

Shelton, Larry R., 1994, Field guide for collecting and processing stream-water samples for the National Water-Quality Assessment Program: U.S. Geological Survey Open-File Report 94-455, 42 p.  Available Online

Sheets, Charlynn J., and Kozar, Mark D., 2000, Ground-water quality in the Appalachian Plateaus, Kanawha River Basin, West Virginia: U.S. Geological Survey Water-Resources Investigations Report 99-4269, 25 p.  Available Online

Shedlock, Robert J., Denver, Judith M., Hayes, Martha A., Hamilton, Pixie A., Koterba, Michael T., Bachman, L. Joseph, Phillips, Patrick J., and Banks, William S.L., 1999, Water-quality assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia: Results of investigations, 1987-91: U.S. Geological Survey Water-Supply Paper 2355-A, 41 p.  Available Online

Schwarz, G.E., Alexander, R.B., Smith, R.A., and Preston, S.D., 2011, The regionalization of national-scale SPARROW models for stream nutrients: Journal of the American Water Resources Association, online 22Aug2011 in advance of print, 22 p.  doi: 10.1111/j.1752-1688.2011.00581.x Available Online

Schnoebelen, Douglas J., Becher, Kent D., Bobier, Matthew W., and Wilton, Thomas, 1999, Selected nutrients and pesticides in streams of the Eastern Iowa Basins, 1970-95: U.S. Geological Survey Water-Resources Investigations Report 99-4028, 65 p.  Available Online

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