National Water-Quality Assessment (NAWQA) Program
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Showing results 451 to 476 of 2001.
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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
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
Debrewer, Linda M., Rowe, Gary L., Reutter, David C., Moore, Rhett C., Hambrook, Julie A., and Baker, Nancy T., 2000, Environmental setting and effects on water quality in the Great and Little Miami River Basins, Ohio and Indiana: U.S. Geological Survey Water-Resources Investigations Report 99-4201, 98 p. Available Online
Delzer, G.C., and Hamilton, P.A., 2007, National Water-Quality Assessment Program-source Water-Quality Assessments: U.S. Geological Survey Fact Sheet 2007-3069, 2 p. Available Online
Delzer, G.C., and Ivahnenko, Tamara, 2003, A review of literature for methyl tert-butyl ether (MTBE) in sources of drinking water in the United States: U.S. Geological Survey Open-File Report 01-322, 16 p. Available Online
Delzer, G.C., and Ivahnenko, Tamara, 2003, Occurrence and temporal variability of methyl tert-butyl ether (MTBE) and other volatile organic compounds in select sources of drinking water: Results of the focused survey: U.S. Geological Survey Water-Resources Investigations Report 02-4084, 65 p. Available Online
Delzer, Greg, and LaVista, Jennifer, 2008, Man-Made Chemicals Found in Drinking Water at Low Levels: U.S. Geological Survey CoreCast Audio Podcast Episode 78, 7:42 minutes. Available Online
Delzer, Gregory C., and Setmire, James G., 1999, Quality of methyl tert-butyl ether (MTBE) data for ground-water samples collected during 1993-95 as part of the National Water-Quality Assessment Program: U.S. Geological Survey Fact Sheet 101-99, 4 p. Available Online
Delzer, Gregory, C., Zogorski, John S., Lopes, Thomas J., and Bosshart, Robin L., 1996, Occurrence of the gasoline oxygenate MTBE and BTEX compound in urban stormwater in the United States, 1991-1995: U.S. Geological Survey Water-Resources Investigations Report 96-4145, 6 p. Available Online
Demas, Charles R., Brazelton, Sebastian R., and Powell, Nancy J., 2001, The Atchafalaya Basin--River of trees: U.S. Geological Survey Fact Sheet 021-02, 2 p. Available Online
Demas, Charles R., Demcheck, Dennis K., Anderson, Mary L., and Garon, John D., 1999, National Water-Quality Assessment Program--Acadian-Ponchartrain Study Unit: U.S. Geological Survey Fact Sheet FS-185-99, 4 p. Available Online
Demcheck, Dennis K., and Skrobialowski, Stanley C., 2003, Fipronil and degradation products in the rice-producing areas of the Mermentau River Basin, Louisiana, February-September 2000: U.S. Geological Survey Fact Sheet FS-010-03, 6 p. Available Online
Demcheck, Dennis K., and Swarzenski, Christopher M., 2003, Atrazine in southern Louisiana streams, 1998-2000: U.S. Geological Survey Fact Sheet FS-011- 03, 6 p. Available Online
Demcheck, Dennis K., Tollert, Roland W., Mize, Scott V., Skrobialowski, Stanley C., Fendick, Jr., Robert B., Swarzenski, Christopher M., and Porter, Stephen, 2004, Water quality in the Acadian-Pontchartrain Drainages, Louisiana and Mississippi, 1999-2001: U.S. Geological Survey Circular 1232, 41 p. Available Online
Denis, Janet M., and Blomquist, Joel D., 1995, Nitrate in streams in the Great Valley carbonate subunit of the Potomac River Basin: U.S. Geological Survey Fact Sheet 161-95, 4 p. Available Online
Dennehy, K.F., 2000, High Plains Regional Ground-Water Study: U.S. Geological Survey Fact Sheet FS-091-00, 6 p. Available Online
Dennehy, K.F., 1991, National Water-Quality Assessment Program--South Platte River Basin: U.S. Geological Survey Open-File Report 91-155, 2 p. Available Online
Dennehy, K.F., Litke, D.W., and McMahon, P.B., 2002, The High Plains aquifer, USA: Groundwater development and sustainability: In Hiscock, K.M., Rivett, M.O., and Davison, R.M. (eds.), Sustainable Groundwater Development, Geological Society, London, Special Publications, 193, p. 99-119.
Dennehy, Kevin F., and Ortiz-Zayas, Jorge R., 1993, Bibliography of water- related studies, South Platte River Basin--Colorado, Nebraska, and Wyoming: U.S. Geological Survey Open-File Report 93-106, 278 p. Available Online
Dennehy, Kevin F., Litke, David W., McMahon, Peter B., Heiny, Janet S., and Tate, Cathy M., 1995, Water-quality assessment of the South Platte River Basin, Colorado, Nebraska, and Wyoming--Analysis of available nutrient, suspended-sediment, and pesticide data, water years 1980-92: U.S. Geological Survey Water-Resources Investigations Report 94-4095, 145 p. Available Online
Dennehy, Kevin F., Litke, David W., Tate, Cathy M., and Heiny, Janet S., 1993, South Platte River Basin, Colorado, Nebraska, and Wyoming: American Water Resources Association Water Resources Bulletin July/August 1993, vol. 29, no. 4, p. 647-683. doi: 10.1111/j.1752-1688.1993.tb03231.x Available Online
Dennehy, Kevin F., Litke, David W., Tate, Cathy M., Qi, Sharon L., McMahon, Peter B., Bruce, Breton W., Kimbrough, Robert A., and Heiny, Janet S., 1998, Water quality in the South Platte River Basin, Colorado, Nebraska, and Wyoming, 1992-95: U.S. Geological Survey Circular 1167, 38 p. Available Online
Denver, J.M., 1991, Groundwater-sampling network to study agrochemical effects on water quality: The Unconfined Aquifer in Groundwater Residue Sampling Design: Washington, D.C., American Chemical Society, Ch. 7 , p. 139-149.
Denver, J.M., and Ator, S.W., 2006, Pesticides in ground water of the Maryland coastal plain: U.S. Geological Survey Fact Sheet FS 2006-3119, 8 p. Available Online
Denver, J.M., Ator, S.W., Debrewer, L.M., Ferrari, M.J., Barbaro, J.R., Hancock, T.C., Brayton, M.J., and Nardi, M.R., 2004, Water quality in the Delmarva Peninsula, Delaware, Maryland, and Virginia, 1999-2001: U.S. Geological Survey Circular 1228, 30 p. Available Online
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