National Water-Quality Assessment (NAWQA) Program
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Showing results 1 to 26 of 607.
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Zuellig, R.E., Carlisle, D.M., Meador, M.R., and Potapova, M., 2012, Variance partitioning of stream diatom, fish, and invertebrate indicators of biological condition: Freshwater Science, vol. 31, no. 1, p. 182-190. doi: 10.1899/11-040.1 Available Online
Zogorski, John S., Moran, Michael J., and Hamilton, Pixie A., 2001, MTBE and other volatile organic compounds--New findings and implications on the quality of source waters used for drinking-water supplies: U.S. Geological Survey Fact Sheet FS-105-01, 2 p. Available Online
Zogorski, John S., Delzer, Gregory C., Bender, David A., Squillace, Paul J., Lopes, Thomas J., Baehr, Arthur L., Stackelberg, Paul E., Landmeyer, James E., Boughton, Carol J., Lico, Michael S., Pankow, James F., Johnson, Richard L., and Thomson, Neil R., 1998, MTBE: Summary of findings and research by the U.S. Geological Survey: Proceedings of the 1998 Annual Conference of the American Water Works Association, 23 p.
Zogorski, John S., Carter, Janet M., Ivahnenko, Tamara, Lapham, Wayne W., Moran, Michael J., Rowe, Barbara L., Squillace, Paul J., and Toccalino, Patricia L., 2006, Volatile organic compounds in the Nation's ground water and drinking-water supply wells: U.S. Geological Survey Circular 1292, 101 p. Available Online
Zinn, B.A., and Konikow, L.F., 2007, Effects of intraborehole flow on groundwater age distribution: Hydrogeology Journal, vol. 15, no. 4, June, p. 633-643. doi: 10.1007/s10040-006-0139-8 Available Online
Zelt, R.B., and Munn, M.D., 2009, Riparian and associated habitat characteristics related to nutrient concentrations and biological responses of small streams in selected agricultural areas, United States, 2003-04: U.S. Geological Survey Scientific Investigations Report 2009-5224, 78 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
Zamora, Celia, 2008, Estimating Water Fluxes Across the Sediment-Water Interface in the Lower Merced River,California: U.S. Geological Survey Scientific Investigations Report 2007-5216, 47 p. Available Online
Yuan, Lester L., Pollard, Amina I., and Carlisle, Daren M., 2009, Using propensity scores to estimate the effects of insecticides on stream invertebrates from observational data: Environmental Toxicology and Chemistry, vol. 28, no. 7, p. 1518-1527. doi: 10.1897/08-551.1 Available Online
Yang, Y., Van Metre, P.C., Mahler, B.J., Wilson, J.T., Ligouis, B., Razzaque, M.M., Schaeffer, D.J., and Werth, C.J., 2010, Influence of coal-tar sealcoat and other carbonaceous materials on polycyclic aromatic hydrocarbon loading in an urban watershed: Environmental Science and Technology, vol. 44, p. 1217-1223. doi: 10.1021/es902657h Available Online
Woodruff, L.G., Cannon, W.F., Knightes, C.D., Chapelle, F.H., Bradley, P.M., Burns, D.A., Brigham, M.E., and Lowery, M.A., 2010, Total mercury, methylmercury, and selected elements in soils of the Fishing Brook watershed, Hamilton County, New York, and the McTier Creek watershed, Aiken County, South Carolina, 2008: U.S. Geological Survey Data Series 516, 10p. Available Online
Wong, Charles S., Capel, Paul D., and Nowell, Lisa H., 2000, Organochlorine pesticides and PCBs in stream sediment and aquatic biota--Initial results from the National Water-Quality Assessment Program, 1992-1995: U.S. Geological Survey Water-Resources Investigations Report 00-4053, 88 p. Available Online
Wong, Charles S., Capel, Paul D., and Nowell, Lisa H., 2001, National-scale, field-based evaluation of the biota--Sediment accumulation factor model: Environmental Science & Technology, vol. 35, no. 9, p. 1709-1715. doi: 10.1021/es0016452 Available Online
Wolock, David M., and Kauffman, Leon K., 2002, Estimating water-quality conditions in unmonitored water resources: Water Resources Impact, vol. 4, no. 4, July 2002, p. 26-31. 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
Wise, D.R., and Johnson, H.M., 2011, Surface-water nutrient conditions and sources in the United States Pacific Northwest: Journal of the American Water Resources Association, online 22Aug2011 in advance of print, 26 p. doi: 10.1111/j.1752-1688.2011.00580x Available Online
Wildman, Jr., R.A., Domagalski, J.L., and Hering, J.G., 2009, Hydrologic and biogeochemical controls of river subsurface solutes under agriculturally enhanced ground water flow: Journal of Environmental Quality, vol. 38, p. 1830-1840. doi: 10.2134/jeq2008.0448 Available Online
Wilber, William G., and Davis, Jerri V., 1994, Assessing the quality of the Nation's water--Point versus nonpoint sources of phosphorus in rivers: U.S. Geological Survey Yearbook, Fiscal Year 1993, p. 48-49.
Wilber, William G., and Couch, Carol A., 2002, Assessing five national priorities in water resources: Water Resources Impact, vol. 4, no. 4, July 2002, p. 17-21. Available Online
Wilber, W.G., and Alley, W.W., 1988, National Water-Quality Assessment pilot program: U.S. Geological Survey Open-File Report 88-312, 2 p. Available Online
Welch, H.L., Green, C.T., Rebich, R.A., Barlow, J.R.B., and Hicks, M.B., 2010, Unintended consequences of biofuels production--The effects of large-scale crop conversion on water quality and quantity: U.S. Geological Survey Open-File Report 2010-1229, 6 p. Available Online
Welch, H.L., Green, C.T., Coupe, R.H., 2011, The fate and transport of nitrate in shallow groundwater in northwestern Mississippi, USA: Hydrogeology Journal, 14 p., online in advance of print. doi: 10.1007/s10040-011-0748-8 Available Online
Welch, Alan, Ryker, Sarah, Helsel, Dennis, and Hamilton, Pixie, 2001, Arsenic in ground water of the United States: An overview: Water Well Journal, February 2001, p. 30-33.
Welch, Alan H., Westjohn, D.B. Helsel, Dennis R., and Wanty, Richard B., 2000, Arsenic in ground water of the United States: Occurrence and geochemistry: Ground Water, vol. 38, no. 4, p. 589-604. Available Online
Welch, Alan H., Watkins, Sharon A., Helsel, Dennis R., and Focazio, Michael J., 2000, Arsenic in ground-water resources of the United States: U.S. Geological Survey Fact Sheet FS-063-00, 4 p. Available Online
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