National Water-Quality Assessment (NAWQA) Program
More Information about Nutrients
Nutrients National Synthesis
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Effects of Nutrient Enrichment on Stream Ecosystems |
Sources, Transport, and Fate of Agricultural Chemicals
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Showing results 101 to 126 of 648.
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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
Schmidt, Arthur R., and Blanchard, Stephen F., 1997, Surface-water-quality assessment of the Upper Illinois River Basin in Illinois, Indiana, and Wisconsin--Results of investigations through April 1992: U.S. Geological Survey Water-Resources Investigations Report 96-4223, 63 p. Available Online
Schlottmann, J.L., and Funkhouser, R.A., 1991, Chemical analyses of water samples and geophysical logs from cored test holes drilled in the Central Oklahoma aquifer, Oklahoma: U.S. Geological Survey Open-File Report 91- 464, 58 p. Available Online
Schaefer, D.H., Thiros, S.A., Rosen, M.R., 2006, Ground-water quality in the carbonate-rock aquifer of the Great Basin, Nevada and Utah, 2003: U.S. Geological Survey Scientific Investigations Report 2005-5232, 32 p. Available Online
Savoca, Mark E., Tobias, Jennifer, L., Sadorf, Eric M., and Birkenholtz, Trevor L., 1997, Herbicides and nitrates in the Iowa River alluvial aquifer prior to changing land use, Iowa County, Iowa, 1996: U.S. Geological Survey Fact Sheet FS-085-97, 4 p. Available Online
Savoca, Mark E., Sadorf, Eric M., Linhart, S. Mike, and Akers, Kymm K.B., 2000, Effects of land use and hydrogeology on the water quality of alluvial aquifers in eastern Iowa and southern Minnesota, 1997: U.S. Geological Survey Water-Resources Investigations Report 99-4246, 38 p. Available Online
Savoca, Mark E., Sadorf, Eric M., and Akers, Kymm K., 1999, Ground-water quality in the eastern part of the Silurian-Devonian and Upper Carbonate aquifers in the Eastern Iowa Basins, Iowa and Minnesota, 1996: U.S. Geological Survey Water-Resources Investigations Report 98-4224, 31 p. Available Online
Sauer, T.J., Alexander, R.B., Brahana, J.V., and Smith, R.A., 2001, The importance and role of watersheds in the transport of nitrogen: in Follett, R.F. and Hatfield, J.L., eds., Chapter 7 Nitrogen in the Environment: Elsevier, p. 147-181. Available Online
Sadorf, Eric M., and Linhart, S. Michael, 2000, Ground-water quality in alluvial aquifers in the Eastern Iowa Basins, Iowa and Minnesota: U.S. Geological Survey Water-Resources Investigations Report 00-4106, 46 p. Available Online
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