National Water-Quality Assessment (NAWQA) Program
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Showing results 1201 to 1226 of 2000.
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Nolan, Bernard T., 1998, Modeling approaches for assessing the risk of nonpoint- source contamination of ground water: U.S. Geological Survey Open-File Report 98-531, 15 p. Available Online
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
Rebich, Richard and Coupe, Jr., Richard H., 1998, Mississippi Embayment National Water-Quality Assessment: Water Resources Engineering '98 Conference, August 3-7, 1998, Memphis, Tennessee, p. 1213-1217.
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
Breit, G.N., Rice, C., Esposito, K., and Schlottmann, J.L., 1990, Mineralogy and petrography of permian rocks in the Central Oklahoma aquifer: U.S. Geological Survey Open-File Report 90-678, 50 p. Available Online
Gregory, M.B., 2005, Microhabitat preference by aquatic invertebrates influence bioassessment metrics in Piedmont streams of Georgia and Alabama: in Hatcher, K.J., editor, Proceedings of the 2005 Georgia Water Resources Conference, Athens, Georgia, 6 p. Available Online
Embrey, Sandra S., 2001, Microbiological quality of Puget Sound Basin streams and identification of contaminant sources: Journal of the American Water Resources Association, vol. 37, no. 2, p. 407-421. doi: 10.1111/j.1752-1688.2001.tb00978.x Available Online
Francy, Donna S., Myers, Donna N., and Helsel, Dennis R., 2000, Microbiological monitoring for U.S. Geological Survey National Water-Quality Assessment Program: U.S. Geological Survey Water-Resources Investigations Report 00-4018, 34 p. 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
Phillips, P.J., Wall, G.R., Thurman, E.M., Eckhardt, D.A., and Vanhoesen, J., 1999, Metolachlor and its metabolites in tile drain and stream runoff in the Canajoharie creek watershed: Environmental Science & Technology, vol. 33, no. 20, p. 3531-3537. doi: 10.1021/es9811997 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.
Baehr, Arthur L., Charles, Emmanuel G., and Baker, Ronald J., 2001, Methyl tert- butyl either degradation in the unsaturated zone and the relation between MTBE in the atmosphere and shallow ground water: Water Resources Research, vol. 37, no. 2, p. 223-233. Available Online
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
Werner, S.L., Burkhardt, M.R., and DeRusseau, S.N., 1996, Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Pesticides in Water by Carbopak-B Solid-Phase Extraction and High-Performance Liquid Chromatography: U.S. Geological Survey Open-File Report 96-216, 42 p. Available Online
Zaugg, S.D.,Sandstrom, M.W. Smith, S.G., and Fehlberg, K.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
Sandstrom, M.W., Wydoski, D.S., Schroeder, M.P., Zamboni, J.L., and Foreman, W.T., 1992, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of organonitrogen herbicides in water by solid-phase extraction and capillary-column gas chromatography/ mass spectrometry with selected-ion monitoring: U.S. Geological Survey Open-File Report 91-519, 34 p. Available Online
Moulton II, S.R., Carter, J.L., Grotheer, S.A., Cuffney, T.F., and Short, T.M., 2000, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory-- Processing, taxonomy, and quality control of benthic macroinvertebrate samples: U.S. Geological Survey Open-File Report 00-212, 49 p. Available Online
Connor, B.F., Rose,D.L., Noriega, M.C., Murtagh, L., and Abney, S.R., 1998, Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory -- Determination of 86 Volatile Organic Compounds in Water by Gas Chromatography/Mass Spectrometry, Including Detections Less Than Reporting Limits: U.S. Geological Survey Open-File Report 97-829, 78 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
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