National Water-Quality Assessment (NAWQA) Program
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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
Schelker, J., Burns, D.A., Weiler, M., and Laudon, H., 2011, Hydrological mobilization of mercury and dissolved organic carbon in a snow-dominated, forested watershed: Conceptualization and modeling : Journal of Geophysical Research, vol. 116, G01002, 17 p. doi:10.1029/2010JG001330 Available Online
Schapp, Bryan D., and Zogorski, John S., 2006, Occurrence of trihalomethanes in the Nation's ground water and drinking-water supply wells, 1985-2002: U.S. Geological Survey Scientific Investigations Report 2006-5068, 64 p. Available Online
Schaefer, D.H., Green,J.M., and Rosen, M.R., 2007, Hydrogeologic Settings and Ground-Water Flow Simulations of the Eagle Valley and Spanish Springs Valley Regional Study Areas, Nevada, Section 3 in Paschke, Suzanne S., ed., 2007, Hydrogeologic settings and ground-water flow simulations for regional studies of the transport of anthropogenic and natural contaminants to public-supply wells--studies begun in 2001: U.S. Geological Survey Professional Paper 1737-A, p. 3-1 to 3-31. Available Online
Scanlon, B.R., Reedy, R.C., Stonestrom, D.A., Prudic, D.E., and Dennehy, K.F., 2005, Impact of land use and land cover change on groundwater recharge and quality in the southwestern US: Global Change Biology, vol. 11, p. 1577-1593. doi: 10.1111/j.1365-2486.2005.01026.x 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
Sargent, B. Pierre, Maupin, Molly A., and Hinkle, Stephen R., 2008, Estimated Withdrawals from Stream-Valley Aquifers and Refined Estimated Withdrawals from Selected Aquifers in the United States, 2000: USGS Scientific Investigations Report 2008-5003, 71 p. Available Online
Sandstrom, Mark W., Stroppel, Max E., Foreman, William T., and Schroeder, Michael P., 2001, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory - determination of moderate-use pesticides and selected degradates in water by C-18 solid-phase extraction and gas chromatography/mass spectrometry : U.S. Geological Survey Water-Resources Investigations Report 2001-4098, 70 p. Available Online
Sandstrom, Mark W., 1995, Filtration of water-sediment samples for the determination of organic compounds: U.S. Geological Survey Water-Resources Investigations Report 95-4105, 13 p. Available Online
Saleh, D.K., Kratzer, C.R., Green, C.H., and Evans, D.G., 2009, Using the Soil and Water Assessment Tool (SWAT) to simulate runoff in Mustang Creek Basin, California: U.S. Geological Survey Scientific Investigations Report 2009-5031, 28 p. Available Online
Saad, D.A., Schwarz, G.E., Robertson, D.M., and Booth, N.L., 2011, A multi-agency nutrient dataset used to estimate loads, improve monitoring design, and calibrate regional nutrient SPARROW models: Journal of the American Water Resources Association, online 22Aug2011 in advance of print, 17 p. doi: 10.1111/j.1752-1688.2011.00575.x Available Online
Ryberg, K.R., Vecchia, A.V., Martin, J.D., and Gilliom, R.J., 2010, Trends in pesticide concentrations in urban streams in the United States, 1992-2008: U.S. Geological Survey Scientific Investigations Report 2010-5139, 101 p. Available Online
Rupert, Michael G., 2008, Decadal-Scale Changes of Nitrate in Ground Water of the United States, 1988-2004: Journal of Environmental Quality, vol. 37, no. 5, p. S240-S248. doi: 10.2134/jeq2007.0055 Available Online
Ruddy, B.C., Lorenz, D.L., and Mueller, D.K., 2006, County-level estimates of nutrient inputs to the land surface of the conterminous United States, 1982-2001: U.S. Geological Survey, Scientific Investigations Report 2006-5012, 17 p. Available Online
Rubin, J., Bennett, J.P., Hirsch, R.M., and Luoma, S.N., 1985, Principles of national, perennial acquisition and analysis of data on water quality: Final report of ad hoc committee on principles of water-quality data acquisition and utilization, 49 p.
Rowe, G.L., Jr., Gilliom, R.J., and Woodside, M.D., 2013, Tracking and forecasting the Nation's water quality--Priorities and strategies for 2013-2023: U.S. Geological Survey Fact Sheet 2013-3008, 6 p. Available Online
Rowe, G.L., Jr., Belitz, Kenneth, Essaid, H.I., Gilliom, R.J., Hamilton, P.A., Hoos, A.B., Lynch, D.D., Munn, M.D., and Wolock, D.W., 2010, Design of cycle 3 of the National Water-Quality Assessment Program, 2013-2023 - Part 1 - Framework of water-quality issues and potential approaches: U.S. Geological Survey Open-File Report 2009-1296, 54 p., on-line only. Available Online
Rowe, Barbara L., Price, Curtis V., Zogorski, John S., and Moran, Michael J., 2010, Vulnerability of drinking water supply wells to VOCs: J. American Water Works Association, vol. 102, no. 5, May 2010, p. 133-143.
Rowe, Barbara L., Grady, Stephen, Zogorski, John, Koch, Bart, and Tratnyek, Paul, 2001, Initial findings: National survey of MTBE, other ether oxygenates, and other VOCs in community drinking-water sources: U.S. Geological Survey Open-File Report 01-399, 2' by 3' poster. Available Online
Rowe, B.L., Zogorski, J.S., and Valder, J.F., 2006, Volatile organic compounds in samples from domestic and public wells, 1985-2002: U.S. Geological Survey Scientific Investigations Map SIM 2938, 1 sheet. Available Online
Rowe, B.L., Toccalino, P.L., Moran, M.J., Zogorski, J.S., and Price, C.V., 2007, Occurrence and potential human-health relevance of volatile organic compounds in drinking water from domestic wells in the United States: Environmental Health Perspectives, vol. 115, no. 11, p. 1539-1546. doi: 10.1289/ehp.10253 Available Online
Rosen, Michael R., Voss, Frank D., and Arufec, Jorge A., 2008, Evaluation of Intra-annual Variation in U.S. Geological Survey National Water Quality Assessment Ground Water Quality Data: Journal of Environmental Quality, vol. 37, no. 5, p. S199-S208. doi: 10.2134/jeq2007.0055 Available Online
Rosen, Michael R., and Lapham, Wayne W., 2008, Introduction to the U.S. Geological Survey National Water-Quality Assessment (NAWQA) of Ground-Water Quality Trends and Comparison to Other National Programs: Journal of Environmental Quality, vol. 37, no. 5, p. S190-S198. doi: 10.2134/jeq2008.0049 Available Online
Rose, Donna L., and Sandstrom, Mark W., 2003, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory: determination of gasoline oxygenates, selected degradates, and BTEX in water by heated purge and trap/gas chromatography/mass spectrometry: U.S. Geological Survey Water-Resources Investigations Report 2003-4079, 31 p. Available Online
Robinson, Keith W., and Horn, Marilee A., 1998, Availability and suitability of data from public water-supplier sources for use in water-quality assessments: U.S. Geological Survey Open-File Report 97-825, 18 p. Available Online
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