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Jurgens, B.C., Böhlke, J.K., and Eberts, S.M., 2012, TracerLPM (Version 1): An Excel® workbook for interpreting groundwater age distributions from environmental tracer data: U.S. Geological Survey Techniques and Methods Report 4-F3, 60 p.  Available Online

Johnson, R.L., Clark, B.R., Landon, M.K., Kauffman, L.J., and Eberts, S.M., 2011, Modeling the potential impact of seasonal and inactive multi-aquifer wells on contaminant movement to public water-supply wells: Journal of the American Water Resources Association, 9 p., online only in advance of print.  doi: 10.1111/j.1752-1688.2011.00526.x Available Online

Johnson, H.M., Black, R.W., and Wise, D.R., 2013, Estimation of total nitrogen and total phosphorus in streams of the Middle Columbia River Basin (Oregon, Washington, and Idaho) using SPARROW models, with emphasis on the Yakima River Basin, Washington: U.S. Geological Survey Scientific Investigations Report 2013-5199, 38 p.  Available Online

Jagucki, M.J., Landon, M.K., Clark, B.R., and Eberts, S.M., 2008, Assessing the Vulnerability of Public-Supply Wells to Contamination: High Plains Aquifer Near York, Nebraska: U.S. Geological Survey Fact Sheet FS 2008-3025, 6 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

Hoos, A.B., Moore, R.B., Garcia, A.M., Noe, G.B., Terziotti, S.E., Johnston, C.M., and Dennis, R.L., 2013, Simulating stream transport of nutrients in the eastern United States, 2002, using a spatially-referenced regression model and 1:100,000-scale hydrography: U.S. Geological Survey Scientific Investigations Report 2013-5102, 33 p.  Available Online

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

Hitt, K.J., and Nolan, B.T., 2005, Nitrate in ground water--using a model to simulate the probability of nitrate contamination of shallow ground water in the conterminous United States: U.S. Geological Survey Scientific Investigations Map 2881, 2 sheets.  Available Online

Hinkle, S.R., Kauffman, L.J., Thomas, M.A., Brown, C.J., McCarthy, K.A., 2009, Combining particle-tracking and geochemical data to assess public supply well vulnerability to arsenic and uranium: Journal of Hydrology, vol. 376, p. 132-142.  Available Online

Hill, R.A., Hawkins, C.P., Carlisle, D.M., 2013, Predicting thermal reference conditions for USA streams and rivers: Freshwater Science, vol. 32, p. 39-55.  doi: 10.1899/12-009.1 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

Hanson, Paul E., 1998, Pesticides and nitrates in surficial sand and gravel aquifers as related to modeled contamination susceptibility in part of the Upper Mississippi River Basin: U.S. Geological Survey Fact Sheet FS 107-98, 4 p.  Available Online

Gurdak, Jason J., Walvoord, Michelle A., and McMahon, Peter B., 2008, Susceptibility to enhanced chemical migration from depression-focused preferential flow, High Plains aquifer: Vadose Zone Journal, vol. 7, no. 4, p. 1172-1184.  doi: 10.2136/vzj2007.0145 Available Online

Gurdak, J.J., McCray, J.E., Thyne, G.D., and Qi, S.L., 2007, Latin hypercube approach to estimate uncertainty in ground water vulnerability: Ground Water, vol. 45, p. 348-361.  doi: 10.1111/j.1745-6584.2006.00298.x Available Online

Gurdak, J.J., and Qi, S.L., 2006, Vulnerability of Recently Recharged Ground Water in the High Plains Aquifer to Nitrate Contamination: USGS Scientific Investigations Report 2006-5050, 39 p.  Available Online

Green, C.T., Stonestrom, D.A., Bekins, B.A., Akstin, K.C., and Schulz, M.S., 2005, Percolation and transport in a sandy soil under a natural hydraulic gradient: Water Resources Research, vol. 41, W10414, 17 p.  doi: 10.1029/2005WR004061 Available Online

Green, C.T., Böhlke, J.K., Bekins, B.A., and Phillips, S.P., 2010, Mixing effects on apparent reaction rates and isotope fractionation during denitrification in a heterogeneous aquifer: Water Resources Research, vol. 46, W08525, 19 p.  doi: 10.1029/2009WR008903 Available Online

Goldstein, R.M., Meador, M.R., and Ruhl, K.E., 2007, Relative influence of streamflows in assessing temporal variability in stream habitat: Journal of the American Water Resources Association, vol. 43, p. 642-650.  doi: 10.1111/j.1752-1688.2007.00051.x Available Online

Goldstein, R.M., Carlisle, D.M., and Short, T.M., 2006, Can basin land use effects on physical characteristics of streams be determined at broad geographic scales?: Journal of Environmental Monitoring and Assessment, vol. 130, no. 1-3, p. 495-510.  doi: 10.1007/s10661-006-9439-7 Available Online

Golden, H.E., Knightes, C.D., Conrads, P.A., Feaster, T.D., Davis, G.M., Benedict, S.T., and Bradley, P.M., 2013, Climate change and watershed mercury export: A multiple projection and model analysis: Environmental Toxicology and Chemistry, online 17 July 2013, in advance of print, 10 p.  doi: 10.1002/etc.2284 Available Online

Golden, H.E., Knightes, C.D., Conrads, P.A., Davis, G.M., Feaster, T.D., Journey, C.A., Benedict, S.T., Brigham, M.E., and Bradley, P.M., 2012, Characterizing mercury concentrations and fluxes in a Coastal Plain watershed: Insights from dynamic modeling and data: Journal of Geophysical Research, vol. 117, G01006, 17 p.  doi: 10.1029/2011JG001806 Available Online

Garcia, Ana Maria, Hoos, Anne B., and Terzitti, Silvia, 2011, A regional modeling framework of phosphorus sources and transport in streams of the southeastern United States: Journal of the American Water Resources Association, 10 Mar 2011, online in advance of print, 20 p.  doi: 10.1111/j.1752-1688.2010.00517.x Available Online

Frick, E.A., Stell, S.M., and Buell, G.R., 1993, National Water-Quality Assessment Program: A preliminary evaluation of 1990 nutrient loads for the Apalachicola-Chattahoochee-Flint River Basin: Proceedings of the 1993 Georgia Water Resources Conference, April 20-21, 1993 Athens, Georgia, 5 p. 

Frick, E.A., and Buell, Gary R., 1999, Relation of land use to nutrient and suspended-sediment concentrations, loads, and yields in the upper Chattahoochee River Basin, Georgia, 1993-98: in Hatcher, K.J., ed., U.S. Geological Survey reprints from proceedings of the 1999 Georgia Water Resources Conference, March 30-31,1999 The University of Georgia, Athens, Georgia, p. 170-179. 

Frenzel, Steven A., 1996, An application of bioassessment metrics and multivariate techniques to evaluate Central Nebraska streams: U.S. Geological Survey Water-Resources Investigations Report 96-4152, 12 p.  Available Online

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