National Water-Quality Assessment (NAWQA) Project

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NAWQA Publications: Methods (back to categories)

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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

Woods, Paul F., 2004, Role of limnological processes in fate and transport of nitrogen and phosphorus loads delivered into Coeur d'Alene Lake and Lake Pend Oreille, Idaho, and Flathead Lake, Montana: U.S. Geological Survey Professional Paper 1682, 44 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

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

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

Zelt, R.B., 1991, Applications of GIS to the management and analysis of hydrologic information: GIS World, vol. 4, no. 5, August 1991. 

Zelt, Ronald B., Brown, Jesslyn, F., and Kelly, Michael S., 1995, Validation of national land-cover characteristics data for regional water-quality assessment: Geocarto International, vol. 10, no. 4, p. 69-80. 

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