National Water-Quality Assessment (NAWQA) Program
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Weeks, E.P., and McMahon, P.B., 2007, Nitrous oxide fluxes from cultivated areas and rangeland: U.S. High Plains: Vadose Zone Journal, vol. 6, p. 496-510. doi: 10.2136/vzj2006.0164 Available Online
Wise, Daniel R., Rinella III, Frank A., Rinella, Joseph F., Fuhrer, Greg J., Embrey, Sandra S., Clark, Gregory E., Schwarz, Gregory E., and Sobieszczyk, Steven, 2007, Nutrient and Suspended-Sediment Transport and Trends in the Columbia River and Puget Sound Basins, 1993-2003: U.S. Geological Survey Scientific Investigations Report 2007-5186, 117 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
Asher, W., Bender, D.A., Zogorski, J.S., and Bartholomay, R.C., 2006, StreamVOC-A deterministic source-apportionment model to estimate volatile organic compound concentrations in rivers and streams: U.S. Geological Survey Scientific Investigations Report 2006-5110, 167 p. Available Online
Ayotte, J.D., Nolan, B.T., Nuckols, J.R., Cantor, K.P., Robinson, Jr., G.R., Baris, Dalsu, Hayes, Laura, Karagas, Margaret, Bress, William, Silverman, D.T., and Lubin, J.H., 2006, Modeling the probability of arsenic in groundwater in New England as a tool for exposure assessment: Environmental Science and Technology, vol. 40, no. 11, p. 3578-3585. doi: 10.1021/es051972f Available Online
Clark, B.R., Landon, M.K., Kauffman, L.J., and Hornberger, G.Z., 2006, Simulation of solute movement through wellbores to characterize public supply well contaminant vulnerability in the High Plains Aquifer, York, Nebraska: International Ground Water Modeling Center: Modflow and More Conference, May 22-24, 2006, Golden, Colorado, 5 p. Available Online
Goldstein, R.M., Carlisle, D.M., and Short, T.M., 2006, Can basin land use effects on physical characteristics of streams be determined at broad geographic scales?: Journal of Environmental Monitoring and Assessment, vol. 130, no. 1-3, p. 495-510. doi: 10.1007/s10661-006-9439-7 Available Online
Gurdak, J.J., and Qi, S.L., 2006, Vulnerability of Recently Recharged Ground Water in the High Plains Aquifer to Nitrate Contamination: USGS Scientific Investigations Report 2006-5050, 39 p. Available Online
Mahler, B.J., Van Metre, P.C., Wilson, J.T., Guilfoyle, A.L., and Sunvison, M.W., 2006, Concentrations, loads, and yields of particle-associated contaminants in urban creeks, Austin, Texas, 1999-2004: U.S. Geological Survey Scientific Investigations Report 2006-5262, 107 p. Available Online
McMahon, P.B., and Bohlke, J.K., 2006, Regional patterns in the isotopic composition of natural and anthropogenic nitrate in ground water, High Plains, USA: Environmental Science & Technology, vol. 40, p. 2965-2970. doi: 10.1021/es052229q Available Online
McMahon, P.B., Dennehy, K.F., Bruce, B.W., Bohlke, J.K., Michel, R.L., Gurdak, J.J., and Hurlbut, D.B., 2006, Storage and transit time of chemicals in thick unsaturated zones under rangeland and irrigated cropland, High Plains, United States: Water Resources Research, vol. 42, W03413, 18 p. doi: 10.1029/2005WR004417 Available Online
Nolan, Bernard T., and Hitt, Kerie J., 2006, Vulnerability of shallow groundwater and drinking-water wells to nitrate in the United States: Environmental Science and Technology, vol. 40, no. 24, p. 7834-7840. doi: 10.1021/es060911u 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
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
Squillace, P.J., and Moran, M.J., 2006, Factors associated with sources, transport, and fate of volatile organic compounds in aquifers of the United States and implications for ground-water management and assessments: U.S. Geological Survey Scientific Investigations Report 2005-5269, 40 p. Available Online
Stackelberg, P.E., Gilliom, R.J., Wolock, D.M., and Hitt, K.J., 2006, Development and application of a regression equation for estimating the occurrence of atrazine in shallow ground water beneath agricultural areas of the United States: U.S. Geological Survey, Scientific Investigations Report 2005-5287, 12 p. Available Online
Thoms, R.B., Johnson, R.L., and Healy, R.W., 2006, User's guide to the variably saturated flow (VSF) process for MODFLOW: U.S. Geological Survey Techniques and Methods, 6-A18, 58 p. Available Online
Vecchia, A.V., and Crawford, C.G., 2006, Simulation of daily pesticide concentrations from watershed characteristics and monthly climatic data: U.S. Geological Survey Scientific Investigations Report 2006-5181, 60 p. Available Online
Brown, L.R., Gray, R., Hughes, R, and Meador, M.R., editors, 2005, The effects of urbanization on aquatic ecosystems: American Fisheries Society, Symposium 47, Bethesda, Maryland, 423 p.
Cuffney, T.F., Zappia, Humbert, Giddings, E.M.P., and Coles, J.R., 2005, Effects of urbanization on benthic macroinvertebrated assemblages in contrasting environmental settings: Boston, Massachusetts; Birmingham, Alabama; and Salt Lake City, Utah: in Brown, L.R., Gray, R.H., Hughes, R.M., and Meador, M.R., eds., Effects of Urbanization on Stream Ecosystems: AFS Symposium 47, American Fisheries Society, p. 361-407. Available Online
Green, C.T., Stonestrom, D.A., Bekins, B.A., Akstin, K.C., and Schulz, M.S., 2005, Percolation and transport in a sandy soil under a natural hydraulic gradient: Water Resources Research, vol. 41, W10414, 17 p. doi: 10.1029/2005WR004061 Available Online
Hitt, K.J., and Nolan, B.T., 2005, Nitrate in ground water--using a model to simulate the probability of nitrate contamination of shallow ground water in the conterminous United States: U.S. Geological Survey Scientific Investigations Map 2881, 2 sheets. Available Online
Meador, M.R., Coles, J.F., and Zappia, Humbert, 2005, Fish assemblage responses to urban intensity gradients in contrasting metropolitan areas: Birmingham, Alabama and Boston, Massachusetts: in Brown, L.R., Gray, R.H., Hughes, R.M., and Meador, M.R., eds., Effects of Urbanization on Stream Ecosystems: AFS Symposium 47, American Fisheries Society, p. 409-423. Available Online
Nolan, B.T., Bayless, E.R., Green, C.T., Garg, S., Voss, F.D., Lampe, D.C., Barbash, J.E., Capel, P.D. and Bekins, B.A., 2005, Evaluation of unsaturated-zone solute-transport models for studies of agricultural chemicals: U.S. Geological Survey Open-File Report 2005-1196, 16 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
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