National Water-Quality Assessment (NAWQA) Program
More Information about Trends
Regional and National Monitoring and Assessments of Streams and Rivers |
Regional Assessments of Principal Aquifers |
Contaminant Trends in Lake Sediments
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Debrewer, Linda M., Ator, Scott W., and Denver, Judith M., 2008, Temporal trends in nitrate and selected pesticides in Mid-Atlantic ground water: Journal of Environmental Quality, vol. 37, no. 5, p. S296-S308. doi: 10.2134/jeq2007.0664 Available Online
Frans, Lonna, 2008, Trends of Pesticides and Nitrate in Ground Water of the Central Columbia Plateau, Washington, 1993-2003: Journal of Environmental Quality, 37 (5), p. S273-S280. doi: 10.2134/jeq2007.0491 Available Online
Paschke, Suzanne S., Schaffrath, Keelin R., and Mashburn, Shana L., 2008, Near-Decadal Changes in Nitrate and Pesticide Concentrations in the South Platte River Alluvial Aquifer, 1993-2004: Journal of Environmental Quality, vol. 37, no. 5, p. S281-S295. doi: 10.2134/jeq2007.0656 Available Online
Rosen, Michael R., and Lapham, Wayne W., 2008, Introduction to the U.S. Geological Survey National Water-Quality Assessment (NAWQA) of Ground-Water Quality Trends and Comparison to Other National Programs: Journal of Environmental Quality, vol. 37, no. 5, p. S190-S198. doi: 10.2134/jeq2008.0049 Available Online
Rosen, Michael R., Voss, Frank D., and Arufec, Jorge A., 2008, Evaluation of Intra-annual Variation in U.S. Geological Survey National Water Quality Assessment Ground Water Quality Data: Journal of Environmental Quality, vol. 37, no. 5, p. S199-S208. doi: 10.2134/jeq2007.0055 Available Online
Rupert, Michael G., 2008, Decadal-Scale Changes of Nitrate in Ground Water of the United States, 1988-2004: Journal of Environmental Quality, vol. 37, no. 5, p. S240-S248. doi: 10.2134/jeq2007.0055 Available Online
Saad, David A., 2008, Agriculture-Related Trends in Groundwater Quality of the Glacial Deposits Aquifer, Central Wisconsin: Journal of Environmental Quality, vol. 37, p 209-225. doi: 10.2134/jeq2007.0053 Available Online
U.S. Geological Survey, 2008, Relations of Water Quality to Agricultural Chemical Use and Environmental Setting at Various Scales - Results from Selected Studies of the National Water-Quality Assessment Program: U.S. Geological Survey Fact Sheet FS 2007-3088, 6 p. Available Online
Vecchia, A.V., Martin, J.D., and Gilliom, R.J., 2008, Modeling variability and trends in pesticide concentrations in streams: Journal of the American Water Resources Assocation, vol. 44, no. 5, October 2008, p. 1308-1324. doi: 10.1111/j.1752-1688.2008.00225.x Available Online
Anning, D.W., Bauch, N.J., Gerner, S.J., Flynn, M.E., Hamlin, S.N., Moore, S.J., Schaefer, D.H., Anderholm, S.K., and Spangler, L.E., 2007, revised 2010, Dissolved solids in basin-fill aquifers and streams in the southwestern United States: U.S. Geological Survey Scientific Investigations Report 2006-5315, v. 1.1, 168 p. Available Online
Burow, K.R., Dubrovsky, N.M., and Shelton, J. L., 2007, Temporal trends in concentrations of DBCP and nitrate in groundwater in the eastern San Joaquin Valley, California, USA: Hydrogeology Journal (2007), v. 15, p. 991-1007. doi: 10.1007/s10040-006-0148-7 Available Online
Debrewer, L.M., Ator, S.W., and Denver, J.M., 2007, Factors affecting spatial and temporal variability in nutrient and pesticide concentrations in the surficial aquifer on the Delmarva Peninsula: U.S. Geological Survey Scientific Investigations Report 2005-5257, 44 p. Available Online
Rebich, R.A., and Demcheck, D.K., 2007, Trends In Nutrient and Sediment Concentrations and Loads In Major River Basins of the South-Central United States, 1993-2004: USGS Scientific Investigations Report 2007-5090, 112 p. Available Online
Tesoriero, Anthony J., Saad, David A., Burow, Karen R., Frick, Elizabeth A., Puckett, Larry J., and Barbash, Jack E., 2007, Linking ground-water age and chemistry data along flow paths: Implications for trends and transformations of nitrate and pesticides: Journal of Contaminant Hydrology, vol. 94, p. 139-155. doi: 10.1016/j.jconhyd.2007.05.007 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
Marella, R.L., and Berndt, M.P., 2005, Water withdrawals and trends from the Floridan aquifer system in the Southeastern United States, 1950-2000: U.S. Geological Survey Circular 1278, 20 p. Available Online
Van Metre, Peter C., and Mahler, B.J., 2005, Trends in hydrophobic organic contaminants in urban and reference lake sediments across the United States, 1970-2001: Environmental Science and Technology, vol. 39, no. 15, p. 5567-5574. doi: 10.1021/es0503175 Available Online
Fendick, Jr., Robert B., and Tollett, Roland W., 2004, Quality of water from shallow wells in urban residential and light commercial areas in Lafayette Parish, Louisiana, 2001 through 2002: U.S. Geological Survey Water-Resources Investigations Report 03-4118, 58 p. Available Online
Harned, Douglas A., Atkins, Brian, and Harvill, John S., 2004, Nutrient mass balance and trends, Mobile River Basin, Alabama, Georgia, and Mississippi: Journal of the American Water Resources Association, vol. 40, no. 3, p. 765-793. doi:10.1111/j.1752-1688.2004.tb04458.x Available Online
Van Metre, P.C., and Mahler, B.J., 2004, Contaminant trends in reservoir sediment cores as records of influent stream quality: Environmental Science and Technology, vol. 38, no. 11, p. 2978-2986. doi: 10.1021/es049859x Available Online
Harwell, G.R., Van Metre, P.C., Wilson, J.T., and Mahler, B.J., 2003, Spatial distribution and trends in trace elements, polycyclic aromatic hydrocarbons, organochlorine pesticides, and polychlorinated biphenyls in Lake Worth sediment, Fort Worth, Texas: U.S. Geological Survey Water-Resources Investigations Report 03-4269, 56 p. Available Online
Hughes, W. Brian and Berndt, Marian P., 2003, National water-quality assessment in Georgia--2001-2011: in Hatcher, K.J., ed., Proceedings of the 2003 Georgia Water Resources Conference, April 23-24, University of Georgia, Athens, Georgia, 5 p. Available Online
Riva-Murray, Karen, Brightbill, Robin A., and Bilger, Michael D., 2003, Trends in concentrations of polychlorinated biphenyls in fish tissue from selected sites in the Delaware River Basin in New Jersey, New York, and Pennsylvania, 1969-98: U.S. Geological Survey Water-Resources Investigations Report 01-4066, 20 p. Available Online
Robinson, Keith W., Campbell, Jean P., and Jaworski, Norbert A., 2003, Water-quality trends in New England rivers during the 20th century: U.S. Geological Survey Water-Resources Investigations Report 03-4012, 20 p. Available Online
Rosen, Michael R., 2003, Trends in nitrate and dissolved-solids concentrations in ground water, Carson Valley, Douglas County, Nevada, 1985-2001: U.S. Geological Survey Water-Resources Investigations Report 03-4152, 6 p. Available Online