National Water-Quality Assessment (NAWQA) Program
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Showing results 1401 to 1426 of 2000.
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Plummer, L.N., Busenberg, E., Eberts, S.M., Bexfield, L.M., Brown, C.J., Fahlquist, L.S., Katz, B.G., and Landon, M.K., 2008, Low-level detections of halogenated volatile organic compounds in groundwater: Use in vulnerability assessments: Journal of Hydrologic Engineering, vol. 13, no. 11, November 2008, p. 1049-1068. doi: 10.1061/(ASCE)1084-0699(2008)13:11(1049) Available Online
Plummer, L.N., Rupert, M.G., Busenberg, E., and Schlosser, P., 2000, Age of irrigation water in ground water from the eastern Snake River Plain aquifer, South-Central Idaho: Ground Water, vol. 38, no. 2, p. 264-283.
Pocernich, M., and Litke, D.W., 1997, Nutrient concentrations in wastewater- treatment-plant effluents, South Platte River Basin: Water Resources Bulletin, vol. 33, no. 1, p. 205-214. Available Online
Pope, L.M., 1995, Surface-water-quality assessment of the Lower Kansas River Basin, Kansas and Nebraska: Dissolved oxygen and escherichia coli bacteria in streams during low flow, July 1988 through July 1989: U.S. Geological Survey Water-Resources Investigations Report 94-4077, 102 p. Available Online
Pope, Larry M., Bruce, Breton W., and Hansen, Cristi V., 2001, Ground-water quality in Quaternary deposits of the central High Plains Aquifer, south- central Kansas, 1999: U.S. Geological Survey Water-Resources Investigations Report 00-4259, 44 p. Available Online
Pope, Larry M., Bruce, Breton W., Rasmussen, Patrick P., and Milligan, Chad R., 2001, Quality of shallow ground water in areas of recent residential and commercial development, Wichita, Kansas, 2000: U.S. Geological Survey Water-Resources Investigations Report 02-4228, 67 p. Available Online
Porter, S.G., Cuffney, T.F., Gurtz, M.E., and Meador, M.R., 1993, Methods for collecting algal samples as part of the National Water-Quality Assessment Program: U.S. Geological Survey Open-File Report 93-409, 39 p. Available Online
Porter, Stephen D., 2008, Algal Attributes: An Autecological Classification of Algal Taxa Collected by the National Water-Quality Assessment Program: U.S. Geological Survey Data Series 329, 18 p. Available Online
Porter, Stephen D., Mueller, David K., Spahr, Norman E., Munn, Mark D., and Dubrovsky, Neil M., 2008, Efficacy of algal metrics for assessing nutrient and organic enrichment in flowing waters: Freshwater Biology, vol. 53, p. 1036-1054. doi: 10.1111/j.1365-2427.2007.01951.x Available Online
Porter, Stephen D., White, Kevin D., and Clark, J.R., 1994, Water-quality assessment of the Kentucky River Basin, Kentucky: Distribution of metals and other trace elements in sediment and water, 1987-90: U.S. Geological Survey Water-Resources Investigations Report 94-4134, 184 p. Available Online
Potapova, M., and Charles, D.F., 2003, Potential use of rare diatoms as environmental indicators in U.S.A. rivers: Proceedings of the 17th International Diatom Symposium, Michel Poulin, Editor. Biopress Ltd., Bristol U.K., p. 281-295. Available Online
Potapova, M.G. and Charles, D.F., 2003, Distribution of benthic diatoms in U.S. rivers in relation to conductivity and ionic composition: Freshwater Biology, vol. 48, p. 1311-1328. doi: 10.1046/j.1365-2427.2003.01080.x Available Online
Potapova, M.G., and Charles, D.F., 2005, Choice of substrate in algae-based water-quality assessment: Journal of the North American Benthological Society, vol. 24, no. 2, p. 415-427. Available Online
Potapova, M.G., and Charles, D.F., 2002, Benthic diatoms in USA rivers: distributions along spatial and environmental gradients: Journal of Biogeography, vol. 29, p. 167-187. doi: 10.1046/j.1365-2699.2002.00668.x Available Online
Potapova, M.G., Charles, D.F., Ponader, K.C., and Winter, D.M., 2007, Diatom metrics for monitoring eutrophication in rivers of the United States: Ecological Indicators, vol. 7, no. 1, p. 48-70. doi: 10.1016/j.ecolind.2005.10.001 Available Online
Potapova, M.G., Charles, D.F., Ponader, K.C., and Winter, D.M., 2004, Quantifying species indicator values for trophic diatom indices: a comparison of approaches: Hydrobiologia, vol. 517, p. 25-41. doi: 10.1016/j.ecolind.2005.10.001 Available Online
Potapova, M.G., Ponader, K.C., Lowe, R.L., Clason, T.A., and Bahls, L.L., 2003, Small-celled Nupela species from North America: Diatom Research, vol. 18, no. 2, p. 293-306. Available Online
Potapova, Marina, and Carlisle, D.M., 2011, Development and application of indices to assess the condition of benthic algal communities in U.S. streams and rivers: U.S. Geological Survey Open File Report 2011-1126, 40 p. Available Online
Potapova, Marina, Coles, J. F., Giddings, E.M., and Zappia, Humbert, 2005, A comparison of the influences of urbanization on stream benthic algal assemblages in contrasting environmental settings: in Brown, L.R., Gray, R.H., Hughes, R.M., and Meador, M.R., eds., Effects of urbanization on stream ecosystems: American Fisheries Society, Symposium 47, Bethesda, Maryland, p. 333-359. Available Online
Powell, Jeffrey R., 2003, Response of fish communities to cropland density and natural environmental setting in the Eastern Highland Rim Ecoregion of the lower Tennessee River Basin, Alabama and Tennessee, 1999: U.S. Geological Survey Water-Resources Investigations Report 02-4268, 48 p. Available Online
Preston, S.D., Alexander, R.B., and Wolock, D.M., 2011, SPARROW modeling to understand water-quality conditions in major regions of the United States: A featured collection introduction: Journal of the American Water Resources Association, online 22Aug2011, 4 p. doi: 10.1111/j.1752-1688.2011.00585.x Available Online
Preston, S.D., Alexander, R.B., and Woodside, M.D., 2011, Regional assessments of the Nation's water quality--Improved understanding of stream nutrient sources through enhanced modeling capabilities: U.S. Geological Survey Fact Sheet 2011-3114, 6 p. Available Online
Preston, S.D., Alexander, R.B., Schwarz, G.E., and Crawford, C.G., 2011, Factors affecting stream nutrient loads: A synthesis of regional SPARROW model results for the continental United States: Journal of the American Water Resources Association, online 22Aug2011 in advance of print, 25 p. doi: 10.1111/j.1752-1688.2011.00577.x Available Online
Preston, Stephen D., Alexander, Richard B., Woodside, Michael D., and Hamilton, Pixie A., 2009, SPARROW modeling - Enhancing understanding of the Nation's water quality: U.S. Geological Survey Fact Sheet 2009-3019, 6 p. Available Online
Price, C.V., and Clawges, R.M., 1999, Digital data sets describing water use, toxic chemical releases, metropolitan areas, and population density of the conterminous United States: U.S. Geological Survey Open-File Report 99-78, illus., 13 refs. Available Online
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