National Water-Quality Assessment (NAWQA) Project
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Alexander, R.B., Smith, R.A., Schwarz, G.S., Boyer, E.W., Nolan, J.V., and Brakebill, J.W., 2008, Differences in phosphorus and nitrogen delivery to the Gulf of Mexico from the Mississippi River Basin: Environmental Science and Technology, vol. 42, no. 3, p. 822-830. doi: 10.1021/es0716103 Available Online
Alexander, Richard B., Johnes, Penny J., Boyer, Elizabeth W., and Smith, Richard A., 2002, A comparison of models for estimating the riverine export of nitrogen from large watersheds: Biogeochemistry, vol. 57, no. 58, p. 295-339. doi: 10.1023/A:1015752801818 Available Online
Alley, W.M., and Wilber, W.G., 1988, National Water-Quality Assessment Program: 1988 U.S. Geological Survey Year Book, p. 37-39.
Alvarez, D.A., Cranor, W.L., Perkins, S.D., Clark, R.C., and Smith, S.B., 2008, Chemical and toxicologic assessment of organic contaminants in surface water using passive samplers: Journal of Environmental Quality 2008 (37), p. 1024-1033. doi: 10.2134/jeq2006.0463 Available Online
Anderson, Robert M.,Beer, Kevin M., Buckwalter, Theodore F., Clark, Mary E., McAuley, Steven D., Sams III, James I., Williams, Donald R., 2001, Water quality in the Allegheny and Monongahela River Basins, Pennsylvania, West Virginia, New York, and Maryland, 1996-98: U.S. Geological Survey Circular 1202, 32 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
Ator, S.W., Denver, J.M., and Brayton, M.J., 2005, Hydrologic and geochemical controls on pesticide and nutrient transport to two streams on the Delmarva Peninsula: U.S. Geological Survey Scientific Investigations Report 2004-5051, 34 p. Available Online
Ator, S.W., Denver, J.M., Krantz, D.E., Newell, W.L., and Martucci, S.K., 2005, A surficial hydrogeologic framework for the Mid-Atlantic coastal plain: U.S. Geological Survey Professional Paper 1680, 44 p., and 4 maps. Available Online
Ator, Scott W., 1998, Nitrate and pesticide data for waters of the Mid-Atlantic Region: U.S. Geological Survey Open-File Report 98-158, 5 p. 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
Ator, Scott W., 2000, Relating shallow ground-water quality to surficial hydrogeology in the Mid-Atlantic Coastal Plain: Conference Proceedings- NWQMC National Monitoring Conference 2000, Austin, Texas, p. 409-423.
Ator, Scott W., and Denis, Janet M., 1997, Relation of the nitrogen and phosphorus in ground water to land use in four subunits of the Potomac River Basin: U.S. Geological Survey Water-Resources Investigations Report 96-4268, 26 p. 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
Ator, Scott W., and Ferrari, and Matthew J., 1997, Nitrate and selected pesticides in ground water of the Mid-Atlantic Region: U.S. Geological Survey Water-Resources Investigations Report 97-4139, 8 p. Available Online
Ator, Scott W., Blomquist, Joel D., Brakebill, John W., Denis, Janet M., Ferrari, Matthew J., Miller, Cherie V., and Zappia, Humbert, 1998, Water quality in the Potomac River Basin, Maryland, Pennsylvania, Virginia, West Virginia, and the District of Columbia, 1992-96: U.S. Geological Survey Circular 1166, 38 p. Available Online
Ator, Scott W., Denver, Judith M. and Pitchford, Ann M., 2000, Developing Landscape-Indicator Models for Pesticides and Nutrients in Streams of the Mid-Atlantic Coastal Plain : U.S. Geological Survey Fact Sheet FS-157-00, 4 p. Available Online
Ayotte, J.D., Flanagan, S.M., and Morrow, W.S., 2007, Occurrence of uranium and 222radon in glacial and bedrock aquifers in the northern United States, 1993-2003: U.S. Geological Survey Scientific Investigations Report 2007-5037, 84 p. Available Online
Böhlke, J.K., and Denver, J.M., 1995, Combined use of groundwater dating, chemical, and isotopic analyses to resolve the history and fate of nitrate contamination in two agricultural watersheds, Atlantic coastal plain, Maryland: Water Resources Research, vol.31, no. 9, pages 2319-2339. Available Online
Bachman, L.J., Shedlock, R.J., and Phillips, P.J., 1987, Ground-water-quality assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia: Project Description: U.S. Geological Survey Open-File Report 87-112, 18 p. Available Online
Bachman, L.J., Zynjuk, L.D., and Phillips, P.J., 1992, The significance of hydrologic landscapes in estimating nitrogen loads in base flow to estuarine tributaries of Chesapeake Bay: EOS, Transactions, American Geophysical Union, vol. 73, no. 14, Spring Meeting Supplement, p. 113.
Banks, W.S.L., and Reyes, B., 2009, Anthropogenic organic compounds in source and finished groundwater of community water systems in the Piedmont Physiographic Province, Potomac River Basin, Maryland and Virginia, 2003-2004: U.S. Geological Survey Scientific Investigations Report 2009-5064, 33 p. Available Online
Bartholomay, Roy C., Carter, Janet M., Qi, Sharon L., Squillace, Paul J., and Rowe, Gary L., 2007, Summary of selected U.S. Geological Survey data on domestic well water quality for the Centers for Disease Control's National Environmental Public Health Tracking Program: U.S. Geological Survey Scientific Investigations Report 2007-5213, 57 p. Available Online
Bayless, E.R., Capel, P.D., Barbash, J.E., Webb, R.M.T., Hancock, T.L., and Lampe, D.C., 2008, Simulated fate and transport of metolachlor in the unsaturated zone, Maryland, USA: Journal of Environmental Quality, vol. 37, p. 1064-1072. doi: 10.2134/jeq2006.0562 Available Online
Bickford, Tammy M., Lindsey, Bruce D., and Beaver, Mark R., 1996, Bacteriological quality of ground water used for household supply, Lower Susquehanna River Basin, Pennsylvania and Maryland: U.S. Geological Survey Water-Resources Investigations Report 96-4212, 31 p. Available Online
Bilger, Michael D., and Brightbill, Robin A., 1998, Fish communities and their relation to physical and chemical characteristics of streams from selected environmental settings in the Lower Susquehanna River Basin, 1993-95: U.S. Geological Survey Water-Resources Investigations Report 98-4004, 34 p. Available Online
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