National Water-Quality Assessment (NAWQA) Program
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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
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
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, 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., 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. 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., 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
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., 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
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
Phillips, S.P., Burow, K.R., Rewis, D.L., Shelton, J.J., and Jurgens, Bryant, 2007, Hydrogeologic setting and ground-water flow simulations of the San Joaquin Valley Regional Study Area, California, Section 4 in Paschke, Suzanne S., ed., 2007, Hydrogeologic settings and ground-water flow simulations for regional studies of the transport of anthropogenic and natural contaminants to public-supply wells--studies begun in 2001: U.S. Geological Survey Professional Paper 1737-A, p. 4-1 to 4-30. Available Online
Phillips, P.J., Nowell, L.H., Gilliom, R.J., Nakagaki, N., Murray, K.R., and VanAlstyne, C., 2010, Composition, distribution, and potential toxicity of organochlorine mixtures in bed sediments of streams: Science of the Total Environment, vol. 408, p. 594-606. doi: 10.1016/j.scitotenv.2009.09.052 Available Online
Phillips, P.J., Ator, S.W., and Nystrom, E.A., 2007, Temporal Changes in Surface-Water Insecticide Concentrations after the Phaseout of Diazinon and Chlorpyrifos: Environmental Science and Technology, vol. 41, no. 12, p. 4246-4251. doi: 10.1021/es070301 Available Online
Paul, A.P., Paretti, N.V., MacCoy, D.E., and Brasher, A.M.D., 2012, The occurrence of trace elements in bed sediment collected from areas of varying land use and potential effects on stream macroinvertebrates in the conterminous western United States, Alaska, and Hawaii, 1992-2000: U.S. Geological Survey Scientific Investigations Report 2012-5272, 55 p. Available Online
Paschke, Suzanne S., ed., 2007, Hydrogeologic settings and ground-water flow simulations for regional studies of the transport of anthropogenic and natural contaminants to public-supply wells--studies begun in 2001: U.S. Geological Survey Professional Paper 1737A, 244 p. Available Online
Pankow, James F., Thomson, Neil R., Johnson, Richard L., Baehr, Arthur L., and Zogorski, John S., 1997, The urban atmosphere as a non-point source for the transport of MTBE and other volatile organic compounds (VOCs) to shallow groundwater: Environmental Science and Technology, vol. 31, no. 10, p. 2821-2828. doi: 10.1021/es970040b Available Online
Pankow, James F., Luo, Wentai, Bender, David A., Isabelle, Lorene M., Hollingsworth, Jay S., Chen, Cai, Asher, William E., and Zogorski, John S., 2003, Concentrations and co-occurrence correlations of 88 volatile organic compounds (VOCs) in the ambient air of 13 semi-rural to urban locations in the United States: Atmospheric Environment, vol. 37, p. 5023-5046. doi:10.1016/j.atmosenv.2003.08.006 Available Online
Pankow, J.F., Rathbun, R.E., and Zogorski, J.S., 1996, Calculated volatilization rates of fuel oxygenate compounds and other gasoline-related compounds from rivers and streams: Chemosphere, vol. 33, no. 5, p. 921-937. doi: 10.1016/0045-6535(96)00227-5Â Available Online
Pankow, J.F., Asher, W.E., and Zogorski, J.S., 2006, Source apportionment modeling of volatile organic compounds in streams: Environmental Toxicology and Chemistry, vol. 25, no. 4, p. 921-932. Available Online
Nystrom, E.A., and Burns, D.A., 2011, TOPMODEL simulations of streamflow and depth to water table in Fishing Brook Watershed, New York, 2007-09: U.S. Geological Survey Scientific Investigations Report 2011-5190, 54 p. Available Online
Nowell, Lisa H., Capel, Paul D., and Dileanis, Peter D., 1999, Pesticides in stream sediment and aquatic biota: Distribution, trends, and governing factors: Volume 4 of the series: Pesticides in the Hydrologic System: Lewis Publishers, 1001 p. Available Online
Nowell, Lisa H., and Resek, Elizabeth A., 1994, Summary of national standards and guidelines for pesticides in water, bed sediment, and aquatic organisms and their application to water-quality assessments: U.S. Geological Survey Open-File Report 94-44, 115 p. Available Online
Nowell, L.H., Moran, P.W., Gilliom, R.J., Calhoun, D.L., Ingersoll, C.G., Kemble, N.E., Kuivila, K.M., Phillips, P.J., 2012, Contaminants in stream sediments from seven U.S. metropolitan areas: I. Distribution in relation to urbanization: Archives of Environmental Contamination and Toxicology (2013) vol. 64, p. 32-51. doi: 10.1007/s00244-012-9813-0 Available Online
Nowell, L.H., Crawford, C.G., Nakagaki, N., Thelin, G.P., and Wolock, D.M., 2006, Regression model for explaining and predicting concentrations of dieldrin in whole fish from United States streams: U.S. Geological Survey Scientific Investigations Report 2006-5020, 40 p. Available Online
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