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Denver, J.M., Ator, S.W., Fischer, J.M., Harned, D.C., Schubert, Christopher, and Szabo, Zoltan, 2014, The quality of our Nation's waters-Water quality in the Northern Atlantic Coastal Plain surficial aquifer system, Delaware, Maryland, New Jersey, New York, North Carolina, and Virginia, 1988-2009: U.S. Geological Survey Circular 1353, 88 p.  http://dx.doi.org/10.3133/cir1353 Available Online

Chapman, M.J., Cravotta, C.A., III, Szabo, Z., and Lindsey, B.D., 2013, Naturally occurring contaminants in the Piedmont and Blue Ridge crystalline-rock aquifers and Piedmont Early Mesozoic basin siliciclastic-rock aquifers, eastern United States, 1994-2008: U.S. Geological Survey Scientific Investigations Report 2013-5072, 74 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

Waite, Ian R., 2013, Development and application of an agricultural intensity index to invertebrate and algal metrics from streams at two scales: Journal of the American Water Resources Association, vol. 49, no. 2, p. 431-448.  doi: 10.1111/jawr.12032 Available Online

Ator, Scott W., and Denver, Judith M., 2012, Estimating contributions of nitrate and herbicides from groundwater to headwater streams, Northern Atlantic Coastal Plain, United States: Journal of the American Water Resources Association, online 20Sept2012 in advance of print, 16 p.  doi: 10.1111 /j.1752-1688.2012.00672.x Available Online

Stets, E.G., Kelly, V.J., Broussad, W.P., III, Smith, T.E., and Crawford, C.G., 2012, Century-scale perspective on water quality in selected river basins of the conterminous United States: U.S. Geological Survey Scientific Investigations Report 2012-5225, 108 p.  Available Online

Trench, E.C. Todd, Moore, R.B., Ahearn, E.A., Mullaney, J.R., Hickman, R.E., and Schwarz, G.E., 2012, Nutrient concentrations and loads in the northeastern United States--Status and trends, 1975-2003: U.S. Geological Survey Scientific Investigations Report 2011-5114, 169 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

Johnson, G.C., Zimmerman, T.M., Lindsey, B.D., and Gross, E.L., 2011, Factors affecting groundwater quality in the Valley and Ridge aquifers, eastern United States, 1993-2002: U.S. Geological Survey Scientific Investigations Report 2011-5115, 70 p.  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

Riseng, C.M., Wiley, M.J., Black, R.W., and Munn, M.D., 2011, Impacts of agricultural land use on biological integrity: a casual analysis: Ecological Applications vol. 21, no. 8, p. 3128-3146.  Available Online

Denver, J.M., Cravotta, C.A., III, Ator, S.W., and Lindsey, B.L., 2010, Contributions of phosphorus from groundwater to streams in the Piedmont, Blue Ridge, and Valley and Ridge Physiographic Provinces, Eastern United States: U.S. Geological Survey Scientific Investigations Report 2010-5176, 38 p.  Available Online

Munn, M., Frey, J., and Tesoriero, A., 2010, The influence of nutrients and physical habitat in regulating algal biomass in agricultural streams: Environmental Management, web only, February 2010.  doi: 10.1007/s00267-010-9435-0 Available Online

Denver, J.M., Tesoriero, A.J., and Barbaro, J.R., 2009, Trends and transformation of nutrients and pesticides in a Coastal Plain Aquifer System, United States: Journal of Environmental Quality 2009 39, p. 154-167.  doi: 10.2134/jeq2009.0107 Available Online

Frankforter, Jill D., Weyers, Holly S., Bales, Jerad D., Moran, Patrick W., and Calhoun, Daniel L., 2009, The relative influence of nutrients and habitat on stream metabolism in agricultural streams: Environmental Monitoring and Assessment, August 15, 2009, 19 p.  doi: 10.1007/s10661-009-1127-y Available Online

Kennen, Jonathan G., Riva-Murray, Karen, and Beaulieu, Karen M., 2009, Determining hydrologic factors that influence stream macroinvertebrate assemblages in the northeastern US: Ecohydrology, vol. 3, no. 1, p. 88-106.  doi: 10.1002/eco.99 Available Online

Mullaney, J.R., Lorenz, D.L., Arntson, A.D., 2009, Chloride in groundwater and surface water in areas underlain by the glacial aquifer system, northern United States: U.S. Geological Survey Scientific Investigations Report 2009-5086, 41 p.  Available Online

Tesoriero, Anthony J., Duff, J.H., Wolock, D.M., Spahr, N.E., and Almendinger, J.E., 2009, Identifying pathways and processes affecting nitrate and orthophosphate inputs to streams in agricultural watersheds: Journal of Environmental Quality, vol. 38, p. 1892-1900.  doi: 10.2134/jeq2008.0484 Available Online

Ator, Scott W., 2008, Natural and human influences on water quality in a shallow regional unconsolidated aquifer, Northern Atlantic Coastal Plain: U.S. Geological Survey Scientific Investigations Report 2008-5190, 19 p.  Available Online

Brightbill, R.A., and Munn, M.D., 2008, Environmental and biological data of the nutrient enrichment effects on stream ecosystems project of the National Water Quality Assessment Program, 2003-04: U.S. Geological Survey Data Series 345, 12 p.  Available Online

Calhoun, Daniel L., Gregory, M.B., and Weyers, H.S., 2008, Algal and invertebrate community composition along agricultural gradients: A comparative study from two regions of the Eastern United States: U.S. Geological Survey Scientific Investigations Report 2008-5046, 33 p.  Available Online

Debrewer, Linda M., Ator, Scott W., and Denver, Judith M., 2008, Temporal trends in nitrate and selected pesticides in Mid-Atlantic ground water: Journal of Environmental Quality, vol. 37, no. 5, p. S296-S308.  doi: 10.2134/jeq2007.0664 Available Online

Murdoch, Peter S., Jenkins, Jennifer C., and Birdsey, Richard A., eds., 2008, The Delaware River Basin Collaborative Environmental Monitoring and Research Initiative: Foundation Document: Gen. Tech. Rep. NRS-25 (U.S. Department of Agriculture, Forest Service, Northern Research Station, Newtown Square, PA), 93 p.  Available Online

Debrewer, L.M., Ator, S.W., and Denver, J.M., 2007, Factors affecting spatial and temporal variability in nutrient and pesticide concentrations in the surficial aquifer on the Delmarva Peninsula: U.S. Geological Survey Scientific Investigations Report 2005-5257, 44 p.  Available Online

Johnson, M.R., Buell, G.R., Kim, M.H., and Nardi, M.R., 2007, Riparian land use/land cover data for five study units in the Nutrient Enrichment Effects Topical study of the National Water-Quality Assessment Program: U.S. Geological Survey Data Series 306, 9 p.  Available Online

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