National Water-Quality Assessment (NAWQA) Program
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Showing results 301 to 326 of 2000.
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Bexfield, Laura M., 2008, Decadal-scale changes of pesticides in ground water of the United States, 1993-2003: Journal of Environmental Quality, 2008, vol. 37, no. 5, p. S226-S239. doi:10.2134/jeq2007.0054 Available Online
Chappell, F.H., McMahon, P.B., Dubrovsky, N.M, Fujii, R.F., Oaksford,E.T., and Vroblesky, D.A., 1995, Deducing the distribution of terminal electron-accepting processes in hydrologically diverse groundwater systems: Water Resources Research, vol. 31, no. 2, p. 359-371. Available Online
Kalkhoff, S.J., Kolpin, Dana W., Thurman, E.M., Ferrer, I., and Barcelo, D., 1998, Degradation of chloroacetanilide herbicides: The prevalence of sulfonic and oxanilic acid metabolites in Iowa groundwaters and surface waters: Environmental Science & Technology, vol. 32, no. 11, p. 1738-1740. doi: 10.1021/es971138t Available Online
Wolock, D.M., Winter, T.C., and McMahon, G., 2004, Delineation and evaluation of hydrologic-landscape regions in the United States using geographic information system tools and multivariate statistical analyses: Environmental Management, vol. 34 (Supplement 1), p. S71-S88. doi: 10.1007/s00267-003-5077-9 Available Online
McMahon, P.B., and Bohlke, J.K., 1996, Denitrification and mixing in a stream-aquifer system: Effects on nitrate loading to surface water: Journal of Hydrology, vol. 186, no. 1-4, p. 105-128. doi: 10.1016/S0022-1694(96)03037-5 Available Online
McMahon, P.B., Bohlke, J.K., and Bruce, B.W., 1999, Denitrification in marine shales in northeastern Colorado: Water Resources Research, vol. 35, no. 5, May 1999, p. 1629-1642. doi:10.1029/1999WR900004 Available Online
Bruce, B.W., 1995, Denver's urban ground-water quality: Nutrients, pesticides, and volatile organic compounds: U.S. Geological Survey Fact Sheet 106-95, 2 p. Available Online
Wilson, J.T., and Van Metre, P.C., 1999, Deposition and chemistry of bottom sediments in Cochiti Lake, north-central New Mexico: U.S. Geologcial Survey Water-Resources Investigations Report 99-4258, 31 p. Available Online
Landon, M.K., Jurgens, B.C., Katz, B.G., Eberts, S.M., Burow, K.R., and Crandall, C.A., 2010, Depth-dependent sampling to identify short-circuit pathways to public-supply wells in multiple aquifer settings in the United States: Hydrogeology Journal, vol. 18, no. 3, p. 577. doi: 10.1007/s10040-009-0531-2 Available Online
Cuffney, Thomas F., and Falcone, James A., 2009, Derivation of nationally consistent indices representing urban intensity within and across nine metropolitan areas of the conterminous United States: U.S. Geological Survey Scientific Investigations Report 2008-5095, 37 p. Available Online
Thiros, S.A., Bender, D.A., Mueller, D.K., Rose, D.L., Olsen, L.D., Martin, J.D., Bernard, B., and Zogorski J.S., 2011, Design and evaluation of a field study on the contamination of selected volatile organic compounds and wastewater-indicator compounds in blanks and groundwater samples: U.S. Geological Survey Scientific Investigations Report 2011-5027, 85 p. Available Online
Gerhart, James M., and Brakebill, John W., 1997, Design and implementation of a sampling strategy for a water-quality assessment of the Potomac River Basin: U.S. Geological Survey Water-Resources Investigations Report 96-4034, 31 p. Available Online
Wangsness, David J., 1997, Design and implementation of the National Water-Quality Assessment Program--A United States example: in Murphy, I. Lyons, ed. 1997 Protecting Danube River Basin Resources, Kluwer Academic Publishers, The Netherlands, p. 89-103.
Ivahnenko, Tamara, Grady, Stephen J., and Delzer, Gregory C., 2001, Design of a national survey of methyl tert-butyl ether and other volatile organic compounds in drinking-water sources: U.S. Geological Survey Open-File Report 01-271, 42 p. Available Online
Helsel, Dennis R., 1995, Design of a relational water-quality assessment program: 1995 Proceedings of the Biometrics Section of the American Statistical Association, p. 60-67.
Baehr. Arthur L., Stackelberg, Paul E., Baker, Ronald J., Kauffman, Leon J., Hopple, Jessica A., and Ayers, Mark A., 1997, Design of a sampling network to determine the occurrence and movement of MTBE and other organics through the urban hydrologic cycle: American Chemical Society Division of Environmental Chemistry Preprints of Papers, 213th ACS National Meeting, San Francisco, California, April 13-17,1997, vol. 37, no. 1, p 400-401.
Gurtz, M.E., 1993, Design of biological components of the National Water-Quality Assessment (NAWQA) Program, chapter 15: in Loeb, S.L., and Spacie, A., eds., Biological monitoring of aquatic systems: Boca Raton, Fla., Lewis Publishers, p. 323-354.
Rowe, G.L., Jr., Belitz, Kenneth, Essaid, H.I., Gilliom, R.J., Hamilton, P.A., Hoos, A.B., Lynch, D.D., Munn, M.D., and Wolock, D.W., 2010, Design of cycle 3 of the National Water-Quality Assessment Program, 2013-2023 - Part 1 - Framework of water-quality issues and potential approaches: U.S. Geological Survey Open-File Report 2009-1296, 54 p., on-line only. Available Online
Gilliom, Robert J., Alley, William M., and Gurtz, Martin E., 1995, Design of the National Water-Quality Assessment Program: Occurrence and distribution of water-quality conditions: U.S. Geological Survey Circular 1112, 33 p. Available Online
Carter, Donna S., 1996, Determination of atrazine and its major degradation products in soil pore water by solid-phase extraction, chemical derivation, and gas chromatography/mass spectrometry: U.S. Geological Survey Open-File Report 96-459, 12 p. Available Online
Steuer, J.J. Stensvold, K.A., and Gregory, M.B., 2010, Determination of biologically significant hydrologic condition metrics in urbanizing watersheds: an empirical analysis over a range of environmental settings: Hydrobiologia, vol. 654, no. 1, 34 p., online only. doi: 10.1007/s10750-010-0362-0 Available Online
Gonthier, G.J., 1998, Determination of distinct hydrogeologic units within the Mississippi River Valley Alluvial Aquifer based on ground water: Proceedings of the 28th Mississippi Water Resources Conference, April 7-8 1998, Raymond, MS, p. 206-212.
Kratzer, Charles R., and Biagtan, Rhodora N., 1997, Determination of traveltimes in the Lower San Joaquin River Basin, California, from dye-tracer studies during 1994-1995: U.S. Geological Survey Water-Resources Investigations Report 97-4018, 20 p. Available Online
Pankow, James F., Luo, Wentai, Isabelle, Lorne M., Bender, David A., and Baker, Ronald J., 1998, Determination of wide range of volatile organic compounds (VOCs) in ambient air using multisorbent adsorption/thermal desorption (ATD) and gas chromatography/mass spectrometry (GC/MS): Analytical Chemistry, vol. 70, no. 24, p. 5213-5221. Available Online
Panshin, Sandra Y., 1997, Determining concentrations of 2-bromoallyl alcohol and dibromopropene in ground water using quantitative methods: U.S. Geological Survey Open-File Report 97-43, 7 p. Available Online
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