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Hoos, A.B., and McMahon, Gerard, 2009, Spatial analysis of instream nitrogen loads and factors controlling nitrogen delivery to streams in the southeastern United States using spatially referenced regression on watershed attributes (SPARROW) and regional classification frameworks: Hydrological Processes, vol. 23, no. 16, p. 2275-2294.  doi: 10.1002/hyp.7323 Available Online

Robertson, D.M., and Saad, D.A., 2013, SPARROW Models Used to Understand Nutrient Sources in the Mississippi/Atchafalaya River Basin: Journal of Environmental Quality, vol. 42, no. 5, p. 1422-1440.  doi: 10.2134/jeq2013.02.0066 Available Online

Preston, S.D., Alexander, R.B., and Wolock, D.M., 2011, SPARROW modeling to understand water-quality conditions in major regions of the United States: A featured collection introduction: Journal of the American Water Resources Association, online 22Aug2011, 4 p.  doi: 10.1111/j.1752-1688.2011.00585.x Available Online

Preston, Stephen D., Alexander, Richard B., Woodside, Michael D., and Hamilton, Pixie A., 2009, SPARROW modeling - Enhancing understanding of the Nation's water quality: U.S. Geological Survey Fact Sheet 2009-3019, 6 p.  Available Online

Anning, D.W., Thiros, S.A., Bexfield, L.M., McKinney, T.S., and Green, J.M., 2009, Southwest principal aquifers regional ground-water quality assessment: U.S. Geological Survey Fact Sheet 2009-3015, 4 p.  Available Online

Hoos, Anne B., Robinson, John A., Aycock, Robert A., Knight, Rodney, R., and Woodside, Michael D., 2000, Sources, instream transport, and trends of nitrogen, phosphorus, and sediment in the Lower Tennessee River Basin, 1980-96: U.S. Geological Survey Water-Resources Investigations Report 99-4139, 96 p.  Available Online

Ator, S.W., Brakebill, J.W., and Blomquist, J.D., 2011, Sources, fate, and transport of nitrogen and phosphorus in the Chesapeake Bay Watershed - An empirical model: U.S. Geological Survey Scientific Investigations Report 2011-5167, 27 p.  Available Online

Litke, David W., 1996, Sources and loads of nutrients in the South Platte River, Colorado and Nebraska, 1994-95: U.S. Geological Survey Water-Resources Investigations Report 96-4029, 31 p.  Available Online

Rebich, R.A., Houston, N.A., Mize, S.V., Pearson, D.K., Ging, P.B., and Hornig, C.E., 2011, Sources and delivery of nutrients to the northwestern Gulf of Mexico from streams in the South-Central United States: Journal of the American Water Resources Association, online 22Aug2011 in advance of print, 26 p.  doi: 10.1111/j.1752-1688.2011.00583.x Available Online

Pankow, J.F., Asher, W.E., and Zogorski, J.S., 2006, Source apportionment modeling of volatile organic compounds in streams: Environmental Toxicology and Chemistry, vol. 25, no. 4, p. 921-932.  Available Online

McMahon, P.B., Böhlke, J.K., Kauffman, L.J., Kipp, K.L., Landon, M.K., Crandall, C.A., Burow, K.R., and Brown, C.J., 2008, Source and transport controls on the movement of nitrate to public supply wells in selected principal aquifers of the United States: Water Resources Research, vol. 44, W04401, 17 p.  doi: 10.1029/2007WR006252 Available Online

Moore, R.B., Johnston, C.M., Smith, R.A., and Milstead, B., 2011, Source and delivery of nutrients to receiving waters in the Northeastern and Mid-Atlantic regions of the United States: Journal of the American Water Resources Association, online 22Aug2011 in advance of print, 26 p.  doi: 10.1111/j.1752-1688.2011.00582.x Available Online

Scott, J.C., Skach, K.A., and Toccalino, P.L., 2013, Software for analysis of chemical mixtures-composition, occurrence, distribution, and possible toxicity: U.S. Geological Survey Scientific Investigations Report 2013-5030, 27 p.  Available Online

Heywood, C.E., 2013, Simulations of groundwater flow, transport, and age in Albuquerque, New Mexico, for a study of transport of anthropogenic and natural contaminants (TANC) to public-supply wells: U.S. Geological Survey Scientific Investigations Report 2012-5242, 51 p.  Available Online

Lindgren, R.J., Houston, N.A., Musgrove, M., Fahlquist, L.S., and Kauffman, L.J., 2011, Simulations of groundwater flow and particle-tracking analysis in the zone of contribution to a public-supply well in San Antonio, Texas: U.S. Geological Survey Scientific Investigations Report 2011-5149, 93 p.  Available Online

Crandall, C.A., Kauffman, L.J., Katz, B.G., Metz, P.A., McBride, W.S., and Berndt, M.P., 2009, Simulations of groundwater flow and particle tracking analysis in the area contributing recharge to a public-supply well near Tampa, Florida, 2002-05: U.S. Geological Survey Scientific Investigations Report 2008-5231, 53 p.  Available Online

Clark, B.R., Landon, M.K., Kauffman, L.J., and Hornberger, G.Z., 2008, Simulations of ground-water flow, transport, age, and particle tracking near York, Nebraska, for a study of Transport of Anthropogenic and Natural Contaminants (TANC) to public-supply wells: U.S. Geological Survey Scientific Investigations Report 2007-5068, 47 p.  Available Online

Starn, J.J., and Brown, C.J., 2007, Simulations of ground-water flow and residence time near Woodbury, Connecticut: U.S. Geological Survey Scientific Investigations Report 2007-5210, 56 p.  Available Online

Burow, Karen R., Jurgens, Bryant C., Kauffman, Leon J., Phillips, Steven P., Dalgish, Barbara A., and Shelton, Jennifer L., 2008, Simulations of ground-water flow and particle pathline analysis in the zone of contribution of a public-supply well in Modesto, Eastern San Joaquin Valley, California: U.S. Geological Survey Scientific Investigations Report 2008-5035, 41 p.  Available Online

Yager, R.M., and Heywood, C.E., 2014, Simulation of the effects of seasonally varying pumping on intraborehole flow and the vulnerability of public-supply wells to contamination: Groundwater, vol. 52, p. 40-52.  doi: 10.1111/gwat.12150 Available Online

Feaster, T.D., Golden, H.E., Odom, K.R., Lowery, M.A., Conrads, P.A., and Bradley, P.M., 2010, Simulation of streamflow in the McTier Creek watershed, South Carolina: U.S. Geological Survey Scientific Investigations Report 2010-5202, 61 p.  Available Online

Clark, B.R., Landon, M.K., Kauffman, L.J., and Hornberger, G.Z., 2006, Simulation of solute movement through wellbores to characterize public supply well contaminant vulnerability in the High Plains Aquifer, York, Nebraska: International Ground Water Modeling Center: Modflow and More Conference, May 22-24, 2006, Golden, Colorado, 5 p.  Available Online

Phillips, S.P., Green, C.T., Burow, K.R., Shelton, J.L., and Rewis, D.L., 2007, Simulation of multiscale ground-water flow in part of the Northeastern San Joaquin Valley, California: U.S. Geological Survey Scientific Investigations Report 2007-5009, 55 p.  Available Online

Vecchia, A.V., and Crawford, C.G., 2006, Simulation of daily pesticide concentrations from watershed characteristics and monthly climatic data: U.S. Geological Survey Scientific Investigations Report 2006-5181, 60 p.  Available Online

Webb, R.M.T., Sandstrom, M.W., Krutz, L.J. and Shaner, D.L., 2011, Simulation of branched serial first-order decay of atrazine and metabolites in adapted and nonadapted soils: Environmental Toxicology and Chemistry, 30, p. 1973-1981.  doi: 10.1002/etc.597 Available Online

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