National Water-Quality Assessment (NAWQA) Program
More Information about Modeling
Modeling and Software
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Coupe, R.H., 1998, Concentrations and loads of nitrogen and phosphorus in the Yazoo River, northwestern Mississippi, 1996-97: U.S. Geological Survey Water-Resources Investigations Report 98-4219, 17 p. Available Online
Hanson, Paul E., 1998, Pesticides and nitrates in surficial sand and gravel aquifers as related to modeled contamination susceptibility in part of the Upper Mississippi River Basin: U.S. Geological Survey Fact Sheet FS 107-98, 4 p. Available Online
Nolan, Bernard T., 1998, Modeling approaches for assessing the risk of nonpoint- source contamination of ground water: U.S. Geological Survey Open-File Report 98-531, 15 p. Available Online
Nolan, Bernard T., Ruddy, Barbara C., Hitt, Kerie J., and Helsel, Dennis R., 1998, A National look at nitrate contamination of ground water: Water Conditioning & Purification, vol. 39, no. 12, January 1998, p. 76-79. Available Online
Saad, David A., and Thorstenson Donald C., 1998, Flow and geochemistry along shallow ground-water flowpaths in an agricultural area in southeastern Wisconsin: U.S. Geological Survey Water-Resources Investigations Report 98-4179, 62 p. Available Online
Tesoriero, Anthony J., Inkpen, Emily L., and Voss, Frank D., 1998, Assessing groundwater vulnerability using logistic regression: Source Water Assessment and Protection 98, A Technical Conference April 28-20,1998, p. 157-165. Available Online
Alexander, R.B., Brakebill, J.W., Brew, R.E., and Smith, R.A., 1999, ERF1-Enhanced River Reach File 1.2: U.S. Geological Survey Open-File Report 99-457, map. Available Online
Burkart, M.R., Kolpin, D.W., and James, D.E., 1999, Assessing groundwater vulnerability to agrichemical contamination in the Midwest US: Water Science & Technology, vol. 39, no. 3, p. 103-112. Available Online
Burow, Karen R., Panshin, Sandra Y., Dubrovsky, Neil.M., Vanbrocklin, David, and Fogg, Graham E., 1999, Evaluation of processes affecting 1,2-dibromo-3- chloropropane (DBCP) concentrations in ground water in the eastern San Joaquin Valley, California: Analysis of chemical data and ground-water flow and transport simulations: U.S. Geological Survey Water-Resources Investigations Report 99-4059, 57 p. Available Online
Frick, E.A., and Buell, Gary R., 1999, Relation of land use to nutrient and suspended-sediment concentrations, loads, and yields in the upper Chattahoochee River Basin, Georgia, 1993-98: in Hatcher, K.J., ed., U.S. Geological Survey reprints from proceedings of the 1999 Georgia Water Resources Conference, March 30-31,1999 The University of Georgia, Athens, Georgia, p. 170-179.
Kennen, Jonathan G., 1999, Relation of macroinvertebrate community impairment to catchment characteristics in New Jersey streams: Journal of the American Water Resources Association, vol. 35, no. 4, p. 939-955 doi: 10.1111/j.1752-1688.1999.tb04186.x Available Online
Puckett, Larry J., Cowdery, T.K., Lorenz, D.L., and Stoner, J.D., 1999, Estimation of nitrate contamination of an Agro-Ecosystem Outwash Aquifer using a nitrogen mass-balance budget: Journal of Environmental Quality, vol. 28, no. 6, Nov.-Dec. 1999, p. 2015-2025. Available Online
Rupert, Michael G., 1999, Improvements to the DRASTIC ground-water vulnerability mapping method: U.S. Geological Survey Fact Sheet 066-99, 6 p. 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.
Alpers, Charles N., Antweiler, Ronald C., Taylor, Howard E., Dileanis, Peter D., and Domagalski, Joseph L., eds., 2000, Metal transport in the Sacramento River, California, 1996-97: Volume 2: Interpretations of metal loads: U.S. Geological Survey Water-Resources Investigations Report 00-4002, 106 p. Available Online
Ator, Scott W., Denver, Judith M. and Pitchford, Ann M., 2000, Developing Landscape-Indicator Models for Pesticides and Nutrients in Streams of the Mid-Atlantic Coastal Plain : U.S. Geological Survey Fact Sheet FS-157-00, 4 p. Available Online
Black, Robert W., Haggland, Alan L., Voss, and Frank V., 2000, Predicting the probability of detecting organochlorines pesticides and polychlorinated biphenyls in stream systems on the basis of land use in the Pacific northwest, USA: Environmental Toxicology and Chemistry, vol. 19, no. 4, p. 1044-1054. doi: 10.1897/1551-5028(2000)019<1044:PTPODO>2.3.CO;2 Available Online
Brown, Larry R., and May, Jason T., 2000, Benthic macroinvertebrate assemblages and their relations with environmental variables in the Sacramento and San Joaquin River Drainages, California, 1993-1997: U.S. Geological Survey Water-Resources Investigations Report 00-4125, 25 p. Available Online
Brown, Larry R., and May, Jason T., 2000, Macroinvertebrate assemblages on woody debris and their relations with environmental variables in the lower Sacramento and San Joaquin River Drainages: Environmental Monitoring and Assessment, vol. 64, p. 311-329. doi: 10.1023/A:1006482800472 Available Online
Capel, Paul D., and Zhang, Hua, 2000, Estimation of potential loss of two pesticides in runoff in Fillmore County, Minnesota using a field-scale process-based model and a geographic information system: in Steinheimer, Thomas, R., Ross, Lisa J., and Spittler, Terry D., eds., ACS Symposium Series 175-- Agrochemical fate and movement, Chapter 12, p. 172-184.
Carpenter, Kurt D., and Waite, Ian R., 2000, Relations of habitat-specific algal assemblages to land use and water chemistry in the Willamette Basin, Oregon: Environmental Monitoring and Assessment, vol. 64, no. 1, p. 247-257. doi: 10.1023/A:1006460802772 Available Online
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
Cuffney, Thomas F., Meador, Michael R., Porter, Stephen D., and Gurtz, Martin E., 2000, Responses of physical, chemical, and biological indicators of water quality to a gradient of agricultural land use in the Yakima River Basin, Washington: Environmental Monitoring and Assessment, vol. 64, p. 259-270. doi: 10.1023/A:1006473106407 Available Online
Hoos, Anne B., Robinson, John A., Aycock, Robert A., Knight, Rodney, R., and Woodside, Michael D., 2000, Sources, instream transport, and trends of nitrogen, phosphorus, and sediment in the Lower Tennessee River Basin, 1980-96: U.S. Geological Survey Water-Resources Investigations Report 99-4139, 96 p. Available Online
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