National Water-Quality Assessment (NAWQA) Program
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Showing results 101 to 126 of 606.
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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
Rice, Karen C., 1999, Trace-element concentrations in streambed sediment across the conterminous United States: Environmental Science & Technology, vol. 33, no. 15, p. 2499-2504. doi: 10.1021/es990052s Available Online
Squillace, Paul J., Moran, Michael J., Lapham, Wayne W., Price, Curtis V., Clawges, Rick M., and Zogorski, John S., 1999, Volatile organic compounds in untreated ambient groundwater of the United States, 1985-95: Environmental Science and Technology, vol. 33, no. 23, p. 4176-4187. doi: 10.1021/es990234m Available Online
U.S. Geological Survey, 1999, Key features of the National Water-Quality Assessment Program: U.S. Geological Survey Fact Sheet FS-053-99, 2 p. Available Online
Van Metre, P.C., and Callender, Edward, 1999, Trends in sediment quality in response to urbanization, in Morganwalp, D.W., and Buxton, H.T., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999--Volume 2 of 3--Contamination of Hydrologic Systems and Related Ecosystems: U.S. Geological Survey Water-Resources Investigations Report 99-4018B, p. 471-476. Available Online
Alexander, Richard B., Smith, Richard A., and Schwarz, Gregory E., 2000, Effect of stream channel size on the delivery of nitrogen to the Gulf of Mexico: Nature, vol. 403, February 17, 2000, p. 758-761. Available Online
Alexander, Richard B., Smith, Richard A., Schwarz, Gregory E., Preston, Stephen D., Brakebill, John W., Srinivasan, Raghavan, and Pacheco, Percy A., 2000, Atmospheric nitrogen flux from the watersheds of major estuaries of the United States: An application of the SPARROW watershed model: American Geophysical Union, p. 119-170.
Baehr, Arthur L., Charles, Emmanuel G., and Baker, Ronald J., 2000, Field evidence for degradation of methyl tert-butyl either (MTBE) at low concentrations in the unsaturated zone: EPA/API Workshop on MTBE Biodegradation, Cincinnati, Ohio, February 1-3, 2000.
Clark, Gregory M., Mueller, David K., and Mast M. Alisa, 2000, Nutrient concentrations and yields in undeveloped stream basins of the United States: Journal of the American Water Resources Association, vol. 36, no. 4, August 2000, p. 849-860. doi: 10.1111/j.1752-1688.2000.tb04311.x Available Online
Focazio, Michael J., Welch, Alan H., Watkins, Sharon A., Helsel, Dennis R., and Horn, Marilee A., 2000, A retrospective analysis on the occurrence of arsenic in ground-water resources of the United States and limitations in drinking-water-supply characterizations: U.S. Geological Survey Water-Resources Investigations Report WRIR 99-4279, 21 p. Available Online
Foreman, W.T., Majewski, M.S., Goolsby, D.A., Wiebe, F.W., and Coupe, R.H., 2000, Pesticides in the atmosphere of the Mississippi River Valley, part II--air: The Science of the Total Environment, vol. 248, p. 213-216. doi: 10.1016/S0048-9697(99)00544-6 Available Online
Francy, Donna S., Helsel, Dennis H., and Nally, Rebecca A., 2000, Occurrence and distribution of microbiological indicators in ground water and stream water: Water Environment Research, vol. 72, no. 2, p. 152-161. doi: 10.2175/106143000X137220 Available Online
Goolsby, D.A., 2000, Mississippi Basin nitrogen flux believed to cause Gulf hypoxia: EOS Transactions, American Geophysical Union, vol. 81, no. 29, p. 321 & 326-327.
Hamilton, Pixie, 2000, Water quality: Why geology matters: Geotimes, June 2000, p. 20-23.
Hamilton, Pixie, 2000, Fertile research: The U.S. Geological Survey's National Water-Quality Assessment Program provides food for thought on the variability of water quality across the nation: Water Environment and Technology, vol. 12, no. 2, p. 26-32.
Hoffman, Ryan S., Capel, Paul D., and Larson, Steven J., 2000, Comparison of pesticides in eight U.S. urban streams: Environmental Toxicology and Chemistry, vol. 19, no. 9, p. 2249-2258. doi: 10.1897/1551-5028(2000)019<2249:COPIEU>2.3.CO;2 Available Online
Hopkins, Evelyn H., Hippe, Daniel J., Frick, Elizabeth A., and Buell, Gary R., 2000, Organophosphorus pesticide occurrence and distribution in surface and ground waters of the United States, 1992-97: U.S. Geological Survey Open-File Report 00-187, 4 p. Available Online
Johnson, Richard, Pankow, James, Bender, David, Price, Curtis, and Zogorski, John, 2000, MTBE--To what extent will past releases contaminate community water supply wells: Environmental Science & Technology, May 2000, p. 210-216. Available Online
Kolpin, Dana W., Barbash, Jack E., and Gilliom, Robert J., 2000, Pesticides in ground water of the United States, 1992-1996: Ground Water, vol. 38, no. 6, p. 858-863. Available Online
Lapham, Wayne W., Moran, Michael J., and Zogorski, John S., 2000, Enhancements of nonpoint source monitoring of volatile organic compounds in ground water: Journal of the American Water Resources Association, vol. 36, no. 6, December 2000, p. 1321-1334. doi: 10.1111/j.1752-1688.2000.tb05729.x Available Online
Majewski, Michael S., Foreman, William T., and Goolsby, Donald A., 2000, Pesticides in the atmosphere of the Mississippi River Valley, part I-- rain: The Science of the Total Environment, vol. 248, p. 201-212. doi: 10.1016/S0048-9697(99)00543-4 Available Online
McMahon, P.B., Bruce, B.W., Becker, M.F., Pope, L.M., and Dennehy, K.F., 2000, Occurrence of nitrous oxide in the Central High Plains Aquifer,1999: Environmental Science and Technology, vol. 34, no. 23, p. 4873-4877. doi: 10.1021/es001233t Available Online
Moran, Michael J., Halde, Mike J., Clawges, Rick M., and Zogorski, John S., 2000, Relations between the detection of methyl tert-butyl ether (MTBE) in surface and ground water and its content in gasoline: in Proceedings of the American Chemical society, 219th ACS National meeting, 2000: San Francisco, CA, American, American Chemical Society, vol. 40, no. 1, p. 195-198.
Moran, Michael J., Zogorski, John S., and Squillace, Paul J., 2000, MTBE in groundwater of the United States--Occurrence, potential sources, and long-range transport: Soil, Sediment & Groundwater MTBE special issue, p. 57-62. Available Online
Murdoch, Peter S., Baron, Jill S., and Miller, Timothy L., 2000, Potential effects of climate change on surface-water quality in North America: Journal of the American Water Resources Association, vol. 36, no. 2, p. 347-366. doi: 10.1111/j.1752-1688.2000.tb04273.x Available Online
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