National Water-Quality Assessment (NAWQA) Program

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NAWQA Publications: Complete Bibliography of all NAWQA Publications (back to categories)


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Koch, B., Dale, M., Zogorski, J., Delzer, G., Grady, S., Ivahnenko, T., Clawges, R., and Tratnyek, P., 2003, Occurrence of MTBE and VOCs in drinking water sources of the United States: AWWA Research Foundation Report no. 90954F, 189 p. 

Kociolek, J.P. and Spaulding, S.A., 2002, Morphological variation, species concepts and classification of an unusual fossil centric diatom (Bacillariophyta) from western North America: Journal of Phycology, vol. 38, no. 4, p. 821-833.  doi: 10.1046/j.1529-8817.2002.02009.x

Kolpin, D.W., Barbash, J.E. and Gilliom, R.J., 2002, Atrazine and metolachlor occurrence in shallow groundwater of the United States, 1993-95: Journal of the American Water Resources Association, vol. 38, no.1, p. 301-311.  doi: 10.1111/j.1752-1688.2002.tb01553.x Available Online

Kolpin, D.W., Nations, B.K., Goolsby, D.A., and Thurman, E.M., 1996, Acetochlor in the hydrologic system in the midwestern United States, 1994: Environmental Science & Technology, vol. 30, no. 5, p. 1459-1464.  doi: 10.1021/es9503241 Available Online

Kolpin, D.W., Thurman, E.M., and Linhart, S.M., 1998, The Environmental Occurrence of Herbicides: The Importance of Degradates in Ground Water: Archives of Environmental Contamination and Toxicology, vol. 35, p. 385-390.  doi: 10.1007/s002449900392 Available Online

Kolpin, Dana W., 1997, Agricultural chemicals in ground water of the midwestern United States: Relations to land use: Journal of Environmental Quality, vol. 26, no. 4, July-August 1997, p. 1025-1037.  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

Kolpin, Dana W., Barbash, Jack E., and Gilliom, Robert J., 1998, Occurrence of pesticides in shallow ground water of the United States: Initial results from the National Water-Quality Assessment Program: Environmental Science & Technology, vol. 32, no. 5, p. 558-566.  doi: 10.1021/es970412g Available Online

Kolpin, Dana W., Kalkhoff, Stephen J., Goolsby, Donald A., Sneck-Fahrer, Debra A., and Thurman, E. Michael, 1997, Occurrence of selected herbicides and herbicide degradation products in Iowa's ground water, 1995: Ground Water, vol. 35, no. 4, July-August 1997, p. 679-688.  Available Online

Kolpin, Dana W., Sneck-Fahrer, Debra A., Hallberg, George R., and Libra, Robert D., 1997, Temporal trends of selected agricultural chemicals in Iowa's ground water, 1982-1995: Are things getting better?: Journal of Environmental Quality, vol. 26, no.4, July-August 1997, p. 1007-1017.  Available Online

Kolpin, Dana W., Squillace, P.J., Barbash, J.E., and Zogorski, J.S., 1997, Pesticides and volatile organic compounds in shallow urban ground water of the United States: in Chilton, J., ed., Ground water in the urban environment: A.A. balkema, Netherlands, p. 469-474. 

Kolpin, Dana, Hallberg, George, Sneck-Fahrer, Debra, and Libra, Robert, 1997, Agricultural chemicals in Iowa's ground water, 1982-95--What are the trends?: U.S. Geological Survey Fact Sheet FS-116-97, 4 p.  Available Online

Konrad, C.P., Brasher, A.M.D., and May, J.T., 2008, Assessing streamflow characteristics as limiting factors on benthic invertebrate assemblages in streams across the western United States: Freshwater Biology, vol. 53, no. 10, 16 p.  doi: 10.1111/j.1365-2427.2008.02024.x Available Online

Koterba, M.T., and Shedlock, R.J., 1991, Regional and targeted ground-water-quality networks in the Delmarva Peninsula, Delaware, Maryland and Virginia: American Chemical Society Symposium Series 465, p. 110-138. 

Koterba, M.T., Banks, W.S., and Shedlock, R.J., 1993, Pesticides in ground water in the Delmarva Peninsula: Journal of Environmental Quality, v. 22, no. 3, p. 500-518.  Available Online

Koterba, M.T., Shedlock, R.J., Bachman, L.J., and Phillips, P.J., 1990, Regional and targeted groundwater quality networks in the Delmarva Peninsula, in groundwater residue sampling design: American Chemical Society, Chapter 6, p. 110-138. 

Koterba, Michael T., 1998, Ground-water data-collection protocols and procedures for the National Water-Quality Assessment Program: Collection, documentation, and compilation of required site, well, subsurface, and landscape data for wells: U.S. Geological Survey Water-Resources Investigations Report 98-4107, 91 p.  Available Online

Koterba, Michael T., Wilde, Franceska D., and Lapham, Wayne W., 1995, Ground- water data-collection protocols and procedures for the National water-quality Assessment Program: Collection and documentation of water-quality samples and related data: U.S. Geological Survey Open-File Report 95-399, 113 p.  Available Online

Kozar, Mark D., Sheets, Charlynn J., and Hughes, Curt A., 2001, Ground-water quality and geohydrology of the Blue Ridge Physiographic Province, New River Basin, Virginia and North Carolina: U.S. Geological Survey Water-Resources Investigations Report 00-4270, 36 p.  Available Online

Krabbenhoft, D.P., Wiener, J.G., Brumbaugh, W.G., Olson, M.L., DeWild, J.F., and Sabin, T.J., 1999, A National pilot study of mercury contamination of aquatic ecosystems along multiple gradients: in U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999--Volume 2 of --Contamination of Hydrologic Systems and Related Ecosystems: U.S. Geological Survey Water-Resources Investigations Report 99-4018B, p. 147-160.  Available Online

Kratzer, C.R., Kent, R.H., Saleh, D.K., Knifong, D.L., Dileanis, P.D., and Orlando, J.L., 2011, Trends in nutrient concentrations, loads, and yields in streams in the Sacramento, San Joaquin, and Santa Ana Basins, California, 1975-2004: U.S. Geological Survey Scientific Investigations Report 2010-5228, 112 p.  Available Online

Kratzer, Charles R., 1999, Transport of diazinon in the San Joaquin River Basin, California: Journal of the American Water Resources Association, vol. 35, no. 2, p. 379-395.  doi: 10.1111/j.1752-1688.1999.tb03597.x Available Online

Kratzer, Charles R., 1999, Transport of sediment-bound organochlorine pesticides to the San Joaquin River, California: Journal of the American Water Resources Association, vol. 35, no. 4, p. 957-981.  doi: 10.1111/j.1752-1688.1999.tb04187.x Available Online

Kratzer, Charles R., 1998, Transport of sediment-bound organochlorine pesticides to the San Joaquin River, California: U.S. Geological Survey Open-File Report 97-655, 30 p.  Available Online

Kratzer, Charles R., 1997, Transport of diazinon in the San Joaquin River Basin, California: U.S. Geological Survey Open-File Report 97-411, 22 p.  Available Online

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