National Water-Quality Assessment (NAWQA) Program
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Showing results 326 to 351 of 607.
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Anning, David W., 2011, Modeled sources, transport, and accumulation of dissolved solids in water resources of the Southwestern United States: Journal of the American Water Resources Association, online 22Aug2011 in advance of print, 23 p. doi: 10.1111/j.1752-1688.2011.00579.x Available Online
Green, C.T., Bohlke, 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
Goolsby, D.A., 2000, Mississippi Basin nitrogen flux believed to cause Gulf hypoxia: EOS Transactions, American Geophysical Union, vol. 81, no. 29, p. 321 & 326-327.
Price, C.V., Nakagaki, N., Hitt, K.J., and Clawges, R.M., 2003, Mining GIRAS: Improving on a national treasure of land-use data: Proceedings: ESRI 2003 International User Conference, San Diego, CA, July 7-11, 2003, on-line conference proceedings. Available Online
Embrey, S.S., and Runkle, D.L., 2006, Microbial quality of the Nation's ground-water resources, 1993-2004: U.S. Geological Survey Scientific Investigations Report 2006-5290, 34 p. Available Online
Moran, M.J., Clawges, R.M., and Zogorski, J.S., 2002, Methyl tert-butyl ether in ground and surface water of the United States: in Diaz, A.F., and Drogos, D.L., Oxygenates in Gasoline (Symposium Series 799): Washington, D.C., American Chemical Society, p 2-16.
Nakagaki, Naomi, Hitt, K.J., Price, C.V., and Falcone, J.A., 2012, Methods to characterize environmental settings of stream and groundwater sampling sites for National Water-Quality Assessment: U.S. Geological Survey Scientific Investigations Report 2012-5194, 56 p. Available Online
Zaugg, Steven D., Sandstrom, Mark W., Smith, Steven G., and Fehlberg, Kevin M., 1995, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; determination of pesticides in water by C-18 solid-phase extraction and capillary-column gas chromatography/mass spectrometry with selected-ion monitoring: U.S. Geological Survey Open-File Report 95-181, 49 p. Available Online
Madsen, James F., Sandstrom, Mark W., and Zaugg, Steven D., 2002, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; a method supplement for the determination of Fipronil and degradates in water by gas chromatography/mass spectrometry: U.S. Geological Survey Open-File Report 2002-462, 11 p. Available Online
Rose, Donna L., and Sandstrom, Mark W., 2003, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory: determination of gasoline oxygenates, selected degradates, and BTEX in water by heated purge and trap/gas chromatography/mass spectrometry: U.S. Geological Survey Water-Resources Investigations Report 2003-4079, 31 p. Available Online
Sandstrom, Mark W., Stroppel, Max E., Foreman, William T., and Schroeder, Michael P., 2001, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory - determination of moderate-use pesticides and selected degradates in water by C-18 solid-phase extraction and gas chromatography/mass spectrometry : U.S. Geological Survey Water-Resources Investigations Report 2001-4098, 70 p. Available Online
Starn, Jeffrey J., Bagtzoglou, Amvrossios C., and Robbins, Gary A., 2012, Methods for simulating solute breakthrough curves in pumping groundwater wells: Computers & Geoscience, online in advance of print, January 2012, 12 p. 10.1016/j.cageo.2012.01.011 Available Online
Lindsey, B.D., and Rupert, M.G., 2012, Methods for evaluating temporal groundwater quality data and results of decadal-scale changes in chloride, dissolved solids, and nitrate concentrations in groundwater in the United States, 1988-2010: U.S. Geological Survey Scientific Investigations Report 2012-5049, 46 p. Available Online
Gilliom, Robert J., Mueller, David K., and Nowell, Lisa H., 1998, Methods for comparing water-quality conditions among National Water-Quality Assessment Study Units, 1992-1995: U.S. Geological Survey Open-File Report 97-589, 54 p. Available Online
Baker, N.T., Wilson, J.T., and Moran, M.J., 2008, Methods and sources of data used to develop selected water-quality indicators for streams and ground water for EPA's 2007 Report on the Environment: U.S. Geological Survey Open-File Report 2008-1096, 23 p. Available Online
Thelin, G.P., and Stone, W.W., 2010, Method for estimating annual atrazine use for counties in the conterminous United States, 1992-2007: U.S. Geological Survey Scientific Investigations Report 2010-5034, 129 p. Available Online
Chalmers, Ann Thomas, Argue, Denise M., Gay, David A., Brigham, Mark E., Schmitt, Christopher J., and Lorenz, David L., 2010, Mercury trends in fish from rivers and lakes in the United States, 1969-2005: Journal of Environmental Monitoring and Assessment, published online June 10, 2010 in advance of print. doi: 10.1007/s10661-010-1504-6 Available Online
Brigham, Mark E., Krabbenhoft, David P., and Hamilton, Pixie A., 2003, Mercury in stream ecosystems--New studies initiated by the U.S. Geological Survey: U.S. Geological Survey Fact Sheet 016-03, 4 p. Available Online
Scudder, B.C., Chasar, L.C., Wentz, D.A., Bauch, N.J., Brigham, M.E., Moran, P.W., and Krabbenhoft, D.P., 2009, Mercury in fish, bed sediment, and water from streams across the United States, 1998-2005: U.S. Geological Survey Scientific Investigations Report 2009-5109, 74 p. Available Online
Chasar, L.C., Scudder, B.C., Stewart, A.R., Bell, A.H., and Aiken, G.R., 2009, Mercury cycling in stream ecosystems- 3. Trophic dynamics and methylmercury bioaccumulation: Environmental Science and Technology, vol. 43, no. 8, p. 2733-2739. doi: 10.1021/es8027567 Available Online
Marvin-DiPasquale, M.C., Lutz, M.A., Brigham, M.E., Krabbenhoft, D.P., Aiken, G.R., Orem, W.R., and Hall, B.D., 2009, Mercury cycling in stream ecosystems- 2. Benthic methylmercury production and bed sediment pore water partitioning: Environmental Science and Technology, vol. 43, no. 8, p. 2726-2732. doi: 10.1021/es802698v Available Online
Brigham, M.E., Wentz, D.A., Aiken, G.R., and Krabbenhoft, D.P., 2009, Mercury cycling in stream ecosystems- 1. Water column chemistry and transport: Environmental Science and Technology, vol. 43, no. 8, p. 2720-2725. doi: 10.1021/es802694n Available Online
Chasar, Lia S., and LaVista, Jennifer, 2009, Mercury Contamination in Fish Nationwide: U.S. Geological Survey Multimedia Gallery Home Audio 301, 6:23 minutes. Available Online
Beaulieu, K.M., Button, D.T., Scudder Eikenberry, B.C., Riva-Murray, K., Chasar, L.C., Bradley, P.M., and Burns, D.A., 2012, Mercury bioaccumulation studies in the National Water-Quality Assessment Program--Biological data from New York and South Carolina, 2005-2009: U.S. Geological Survey Data Series 705, 13 p. Available Online
Barringer, J.L., Riskin, M.L., Szabo, Z., Reilly, P.A., Rosman, R., Bonin, J.L., Fischer, J.M., and Heckathorn, H.A., 2010, Mercury and methylmercury dynamics in a Coastal Plain watershed, New Jersey, USA: Water, Air, and Soil Pollution, vol. 212, p. 251-273. doi: 10.1007/s11270-010-0340-1 Available Online
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