Contaminant Occurrence Studies

Large-scale studies of the occurrence and distribution of new contaminants in the environment

Alvarez, D.A., Cranor, W.L., Perkins, S.D., Schroeder, V., and Clark, R.C., 2007,

Identification of potential endocrine disruptors in the Potomac River watershed using passive samplers: U.S. Geological Survey Administrative Report.

Alvarez, D.A., Cranor, W.L., Perkins, S.D., Schroeder, V.L., Werner, S.L., Furlong, E.T., and Holmes, J., 2008,

Investigation of organic chemicals potentially responsible for mortality and intersex in fish of the North Fork of the Shenandoah River, Virginia, during spring of 2007: U.S. Geological Survey Open-File Report 2008–1093, 16 p.

Anderholm, S.K., 1986,

Reconnaissance of hydrology, land use, ground-water chemistry and effects of land use on ground-water chemistry in the Albuquerque-Belen basin, New Mexico: U.S. Geological Survey Water-Resources Investigations Report 86-4174, 37 p.

Antweiler, R.C., Goolsby, D.A., and Taylor, H.E., 1996,

Nutrients in the Mississippi River, 1987-92, in Meade, R.H., ed., Contaminants in the Mississippi River: U.S. Geological Survey Circular 1133, p. 73-85.

Barber, L.B., Antweiler, R.C., Brown, G.K., Keefe, S.H., Peart, D.B., Plowman, T.I., Roth, D.A., and Taylor, H.E., 2003,

Organic and trace element contaminants in water, biota, sediments, and semi-permeable membrane devices at the Tres Rios Demonstration Wetlands, Phoenix, Arizona: U.S. Geological Survey Water-Resources Investigations Report 03-4129, 88 p.

Barber, L.B., II, Leenheer, J.A., Tabor, C.F., Brown, G.K., Noyes, T.I., and Noriega, M.C., 1995,

Organic compounds and sewage-derived compounds, in Moody, J.A., ed., Chemical data for water samples collected during four upriver cruises on the Mississippi River between New Orleans, Louisiana, and Minneapolis, Minnesota, May 1990-April 1992: U.S. Geological Survey Open-File Report 94-523, p. 211-297.

Barber, L.B., Schnoebelen, D.J., Murphy, S.F., Keefe, S.H., Kolpin, D.W., Gray, J.L., Furlong, E.T., Zaugg, S.D., Sandstrom, M.W., Meyer, M.T., and Sprague, L.A., 2004,

Fate of organic wastewater contaminants--A lagrangian based comparison between high and low gradient streams, in Proceedings of the 4th International Conference on Pharmaceuticals and Endocrine Disrupting Chemicals in Water, Minneapolis, Minnesota, October 13-15, 2004: National Ground Water Association, p. 47 (CD-ROM).

Barnes, K.K., Kolpin, D.W., Furlong, E.T., Zaugg, S.D., Meyer, M.T., Barber, L.B., and Focazio, M.J., 2005,

Studies examine contaminants--Pharmaceuticals, hormones and other organic wastewater contaminants in ground water resources: National Driller Magazine, v. 26, no. 3, p. 38-39.

Barnes, K.K., Kolpin, D.W., Furlong, E.T., Zaugg, S.D., Meyer, M.T., Barber, L.B., and Focazio, M.J., 2004,

Pharmaceuticals, hormones, and other organic wastewater contaminants in ground water resources, in Proceedings of Groundwater Foundation Annual Conference and Groundwater Guardian Designation, Groundwater and Public Health---Making the Connection, Washington, D.C., November 4-5, 2004: Groundwater Foundation, p. 24-30.

Barnes, K.K., Kolpin, D.W., Meyer, M.T., Thurman, E.M., Furlong, E.T., Zaugg, S.D., and Barber, L.B., 2002,

Water-quality data for pharmaceuticals, hormones, and other organic wastewater contaminants in U.S. streams, 1999-2000: U.S. Geological Survey Open-File Report 02-94.

Battaglin, W., Drewes, J., Bruce, B., and McHugh, M., 2007,

Contaminants of emerging concern in the environment: Water Resources Impact, v. 9, no. 3, p. 3-4.

Battaglin, W.A., 2002,

Using ratios of atrazine transformation products to atrazine to determine its source in Midwestern streams, in Kenny, J., ed., Ground Water/Surface Water Interactions, AWRA Summer Specialty Conference Proceedings, Middleburg, Virginia: American Water Resources Association, TPS-02-2, p. 213-218.

Battaglin, W.A., Furlong, E.T., and Burkhardt, M.R., 2001,

Concentration of selected sulfonylurea, sulfonamide, and imadazolinone herbicides, other pesticides, and nutrients in 71 streams, 5 reservoir outflows, and 25 wells in the midwestern United States, 1998: U.S. Geological Survey Water-Resources Investigations Report 00-4225, 123 p.

Battaglin, W.A., Furlong, E.T., Burkhardt, M.R., and Peter, C.J., 2000,

Occurrence of sulfonylurea, sulfonamide, imidazolinone, and other herbicides in rivers, reservoirs and ground water in the Midwestern United States, 1998: The Science of the Total Environment, v. 248, no. 2-3, p. 123-133, doi:10.1016/S0048-9697(99)00536-7.

Battaglin, W.A., Furlong, E.T., Burkhardt, M.R., and Peter, C.J., 1999,

Occurrence of sulfonylurea, imidazolinone, and other herbicides in midwestern rivers, reservoirs, and ground water, 1998, 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. 215-225.

Battaglin, W.A., Furlong, E.T., and Peter, C.J., 1998,

A reconnaissance for new, low-application rate herbicides in surface and ground water in the Midwestern United States, in Proceedings of the National Water Quality Monitoring Council (NWQMC) National Conference, Monitoring--Critical Foundations to Protect Our Waters, Reno, Nevada, July 7-9, 1998: Washington, D.C., U.S. Environmental Protection Agency, p. 245-256.

Battaglin, W.A., Furlong, E.T., and Peter, C.J., 1998,

A reconnaissance for sulfonylurea herbicides in waters of the Midwestern USA: An example of collaboration between the public and private sectors: U.S. Geological Survey Fact Sheet FS-046-98, 4 p.

Battaglin, W.A., and Goolsby, D.A., 2000,

Herbicide concentrations in Midwest reservoirs (plus a self-study examination to earn continuing education credit): Crop Decisions, v. 42, no. 3, p. 5-8.

Battaglin, W.A., and Goolsby, D.A., 1999,

Are shifts in herbicide use reflected in concentration changes in midwestern rivers?: Environmental Science and Technology, v. 33, no. 17, p. 2917-2925, doi:10.1021/es9900149.

Battaglin, W.A., and Goolsby, D.A., 1998,

Regression models of herbicide concentrations in outflow from reservoirs in the midwestern USA, 1992-1993: Journal of the American Water Resources Association, v. 34, no. 6, p. 1369-1390, doi:10.1111/j.1752-1688.1998.tb05438.x.

Battaglin, W.A., and Goolsby, D.A., 1997,

Statistical modeling of agricultural chemical occurrence in midwestern rivers: Journal of Hydrology, v. 196, no. 1-4, p. 1-25, doi:10.1016/S0022-1694(97)00011-5.

Battaglin, W.A., and Goolsby, D.A., 1996,

Using GIS and logistic regression to estimate agricultural chemical concentrations in rivers of the midwestern USA, in Kovar, K., and Nachtnebel, H., eds., Application of Geographic Information Systems in Hydrology and Water Resources Management--Proceedings of HydroGIS'96 meeting, Vienna, Austria, April, 1996: International Association of Hydrological Sciences IAHS Publication No. 235, p. 253-260.

Battaglin, W.A., and Goolsby, D.A., 1996,

Using GIS and regression to estimate annual herbicide concentrations in outflow from reservoirs in the midwestern USA, 1992-93, in AWRA Symposium on GIS and Water Resources, Ft. Lauderdale, FL, September 22-26, 1996: American Water Resources Association.

Battaglin, W.A., and Goolsby, D.A., 1996,

Using GIS and regression to estimate annual herbicide concentrations in outflow from reservoirs in the midwestern USA, 1992-93, in Hallam, C.A., Salisbury, H.M., Lanfear, K.J., and Battaglin, W.A., eds., GIS and Water Resources--Proceedings of the American Water Resources Association: American Water Resources Association Technical Publication Series TPS-96-3, p. 89-98.

Battaglin, W.A., and Goolsby, D.A., 1995,

Spatial data in Geographic Information System format on agricultural chemical use, land use, and cropping practices in the United States: U.S. Geological Survey Open-File Report 94-4176, 87 p.

Battaglin, W.A., and Goolsby, D.A., 1994,

Relations between herbicide use and annual transport of herbicides in midwestern rivers, 1991-92, in Weigmann, D.L., ed., New Directions in Pesticide Research Development, Management, and Policy--Proceedings of the Fourth National Conference, on Pesticides, Richmond, Va., November 1-3, 1993: p. 711-723.

Battaglin, W.A., Goolsby, D.A., and Coupe, R., 1993,

Annual use and transport of agricultural chemicals in the Mississippi River, 1991-92, in Goolsby, D.A., Boyer, L.L., and Mallard, G.E., eds., Selected papers on agricultural chemicals in water resources of the Midcontinental United States: U.S. Geological Survey Open-File Report 93-418, p. 26-40.

Battaglin, W.A., Goolsby, D.A., and Coupe, R.H., 1996,

Annual use and transport of agricultural chemicals in the Mississippi River, 1991-92, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 429-440.

Battaglin, W.A., Goolsby, D.A., and Mueller, D.K., 1994,

Relations between use, concentration, and transport of agricultural chemicals in the Mississippi River basin, in Marston, R.A., and Hasfurther, V.R., eds., Effects of Human-induced Changes on Hydrologic System--Proceedings of the American Water Resources Association summer symposium, Jackson Hole, Wyoming, June 26-29, 1994: p. 1073-1086.

Battaglin, W.A., and Hay, L.E., 1996,

Effects of sampling strategies on estimates of annual mean herbicide concentrations in midwestern rivers: Environmental Science and Technology, v. 30, no. 3, p. 889-896, doi:10.1021/es950351r.

Battaglin, W.A., Kendall, C., Chang, C.C.Y., Silva, S.R., and Campbell, D.H., 2001,

Chemical and isotopic evidence of nitrogen transformation in the Mississippi River, 1997-98: Hydrological Processes, v. 15, no. 7, p. 1285-1300, doi:10.1002/hyp.214.

Battaglin, W.A., Kendall, C., Chang, C.C.Y., Silva, S.R., and Campbell, D.H., 2001,

Isotopic and chemical composition of inorganic and organic water-quality samples from the Mississippi River Basin, 1997-98: U.S. Geological Survey Water-Resources Investigations Report 01-4095, 57 p.

Battaglin, W.A., Kendall, C., Goolsby, D.A., and Boyer, L.L., 1997,

Plan of study to determine if the isotopic ratios ?15N and ?18O can reveal the sources of nitrate discharged by the Mississippi River into the Gulf of Mexico: U.S. Geological Survey Open-File Report 97-230, 18 p.

Battaglin, W.A., Kolpin, D.W., Scribner, E.A., Kuivila, K.M., and Sandstrom, M.W., 2005,

Glyphasate, other herbicides, and transformation products in midwestern streams, 2002: Journal of the American Water Resources Association, v. 41, no. 2, p. 323-332, doi:10.1111/j.1752-1688.2005.tb03738.x

Battaglin, W.A., Kuivila, K., Winton, K., and Meyer, M., 2008,

Occurrence of chlorothalonil, its transformation products, and selected other pesticides in Texas and Oklahoma streams, 2003-2004: U.S. Geological Survey Scientific Investigations Report 2008–5016, 9 p.

Battaglin, W.A., Thurman, E.M., Kalkhoff, S.J., and Porter, S.D., 2003,

Herbicides and transformation products in surface waters of the midwestern United States: Journal of the American Water Resources Association, v. 39, no. 4, p. 743-756, doi:10.1111/j.1752-1688.2003.tb04402.x.

Battaglin, W.A., Thurman, E.M., Kolpin, D.W., Scribner, E.A., Sandstrom, M.W., and Kuivila, K.M., 2003,

Work plan for determining the occurrence of glyphosate, its transformation product AMPA, other herbicide compounds, and antibiotics in midwestern United States streams, 2002: U.S. Geological Survey Open-File Report 03-69, 18 p.

Bexfield, L.M., and Plummer, L.N., 2003,

Occurrence of arsenic in ground water of the Middle Rio Grande Basin, central New Mexico, in Welch, A.H., and Stollenwerk, K.G., eds., Arsenic in Ground Water--Geochemistry and Occurrence: Boston, Kluwer Academic Publishers, p. 295-327.

Boxall, A.B.A., Kolpin, D.W., Halling-Sorensen, B., and Tolls, J., 2003,

Are veterinary medicines causing environmental risks?: Environmental Science and Technology, v. 37, no. 15, p. 286A-294A.

Boxall, A.B.A., Sinclair, C.J., Fenner, K., Kolpin, D., and Maund, S.J., 2004,

When synthetic chemicals degrade in the environment--What are the absolute fate, effects, and potential risks to humans and the ecosystem?: Environmental Science and Technology, v. 38, no. 19, p. 368A-375A.

Boyd, R.A., 1999,

Herbicides and herbicide degradates in shallow ground water and the Cedar River near a municipal well field, Cedar Rapids, Iowa, 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. 289-300.

Boyd, R.A., and Furlong, E.T., 2002,

Human-health pharmaceutical compounds in Lake Mead, Nevada and Arizona, and Las Vegas Wash, Nevada, October 2000-August 2001: U.S. Geological Survey Open-File Report 02-385, 24 p.

Brabets, T.P., Hooper, R.P., and Landa, E.R., 2001,

Water quality in the Yukon River basin: U.S. Geological Survey Fact Sheet FS-050-01.

Bratkovich, A., Dinnel, S.P., and Goolsby, D.A., 1995,

Variability and prediction of freshwater and nitrate fluxes for the Louisiana-Texas shelf--Mississippi and Atchafalaya source functions: Estuaries, v. 17, no. 4, p. 766-778.

Brigham, M.E., Krabbenhoft, D.P., and Hamilton, P.A., 2003,

Mercury in stream ecosystems--New studies initiated by the U.S. Geological Survey: U.S. Geological Survey Fact Sheet 016-03, 4 p.

Brown, J.B., and Battaglin, W.A., 2007,

Striving for collaborative science and communication through the Consortium for Research and Education on Emerging Contaminants (CREEC): Water Resources Impact, v. 9, no. 3, p. 22-24.

Burkart, M., Kolpin, D.W., Jaquis, R., and Cole, K., 2001,

Soil characteristics and agrichemicals in groundwater of the midwestern United States: Water Science and Technology, v. 43, no. 5, p. 251-260.

Burkart, M.R., 1991,

Hydrogeologic research on agrichemicals in the Midcontinental United States, in Water Quality Workshop for Eastern Europe, Poznan, Poland, Proceedings, September 23-26, 1991: p. 22.

Burkart, M.R., 1990,

Interagency research and technical integration, in Information exchange on models and data needs relating to the impact of agricultural practices on water quality--Workshop Proceedings, Reston, Virginia, February 5-8, 1990: U.S. Geological Survey, Office Water Data Coordination, p. 11-12.

Burkart, M.R., and Kolpin, D.W., 1993,

Regional assessment of factors related to herbicides and nitrate in near-surface aquifers of the midcontinent, in Agricultural research to protect water quality--Proceedings of the Conference, Minneapolis, Minn., February 21-24, 1993: Ankeny, Iowa, Soil and Water Conservation Society, p. 390-392.

Burkart, M.R., Kolpin, D.W., and James, D.E., 1999,

Assessing groundwater vulnerability to agrichemical contamination in the midwest U.S.: Water Science and Technology, v. 39, no. 3, p. 103-112.

Burkart, M.R., Kolpin, D.W., Jaquis, R.J., and Cole, K.J., 1999,

Agrichemicals in ground water of the Midwestern USA--Relations to soil characteristics: Journal of Environmental Quality, v. 28, no. 6, p. 1908-1915.

Burkart, M.R., and Ragone, S.A., 1989,

Planned studies of herbicides in ground and surface water in the Midcontinental United States, in Papers from International Symposium on Integrated Approaches to Water Pollution Problems, Lisbon, Portugal, June 19-23, 1989: International Water Resources Association, v. 3, p. 475-477.

Burkart, M.R., Ragone, S.E., Thurman, E.M., and Perry, C.A., 1989,

Planned studies of herbicides in ground and surface water in the Midcontinental United States, in Mallard, G.E., and Ragone, S.E., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Phoenix, Arizona, September 26-30, 1988: U.S. Geological Survey Water-Resources Investigations Report 88-4220, p. 445-452.

Buxton, H.T., and Kolpin, D.W., 2002,

Pharmaceuticals, hormones, and other organic wastewater contaminants in U.S. streams: U.S. Geological Survey Fact Sheet FS-027-02, 2 p.

Cain, D.J., and Edelmann, P., 1987,

A reconnaissance water-quality appraisal of the Fountain Creek Alluvial Aquifer between Colorado Springs and Pueblo, Colorado, including trace elements and organic constituents: U.S. Geological Survey Water-Resources Investigations Report 86-4085, 45 p.

Cain, D.J., Helsel, D.R., and Ragone, S.E., 1987,

Reconnaissance appraisals of anthropogenic effects on regional ground-water quality, in Franks, B.J., ed., U.S. Geological Survey Program on Toxic Waste--Ground-Water Contamination--Proceedings of the third technical meeting, Pensacola, Florida, March 23-27, 1987: U.S. Geological Survey Open-File Report 87-109, p. E-25-E-31.

Cain, T.G., Kolpin, D.W., Vargo, J.D., and Wichman, M.D., 2004,

Occurrence of antibiotics, pharmaceuticals and sterols at select surface and wastewater sites in Iowa, in Proceedings of the 4th International Conference on Pharmaceuticals and Endocrine Disrupting Chemicals in Water, Minneapolis, Minnesota, October 13-15, 2004: National Ground Water Association, p. 151-157 (CD-ROM).

Campagnolo, E.R., Johnson, K.R., Karpati, A., Rubing, C.S., Kolpin, D.W., Meyer, M.T., Esteban, J.E., Currier, R.W., Smith, K., Thu, K.M., and McGeehin, M., 2002,

Antimicrobial residues in animal waste and water resources proximal to large-scale swine and poultry feeding operations: The Science of the Total Environment, v. 299, no. 1-3, p. 89-95, doi:10.1016/S0048-9697(02)00233-4.

Capel, P.D., 1991,

Wet atmospheric deposition of herbicides in Minnesota, in Mallard, G.E., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Monterey, California, March 11-15, 1991: U.S. Geological Survey Water-Resources Investgations Report 91-4034, p. 334-337.

Centers for Disease Control, 2000,

Sampling protocol to assess and monitor off-farm transport of waste-associated chemical and microbial constituents on swine feeding operations: Centers for Disease Control and Prevention, National Center for Environmental Health, Division of Environmental Hazards and Health Effects, Health Studies Branch, Atlanta, GA, 50 p.

Christian, T., Schneider, R.J., Barber, H.A., Skutlarek, D., Meyer, M.T., and Goldbach, H.E., 2003,

Determination of antibiotic residues in manure, soil, and surface waters: Acta Hydrochimica et Hydrobiologica, v. 31, no. 1, p. 36-44.

Clark, G.M., Broshears, R.E., Hooper, R.P., and Goolsby, D.A., 2002,

Evaluating the influence of source basins on downstream water quality in the Mississippi River: Journal of the American Water Resources Association, v. 38, no. 3, p. 803-818.

Clark, G.M., and Goolsby, D.A., 2000,

Occurrence and load of selected herbicides and metabolites in the lower Mississippi River: The Science of the Total Environment, v. 248, no. 2-3, p. 101-113, doi:10.1016/S0048-9697(99)00534-3.

Clark, G.M., and Goolsby, D.A., 1999,

Discharge of herbicides from the Mississippi River Basin to the Gulf of Mexico, 1991-97: U.S. Geological Survey Fact Sheet FS-163-98, 4 p.

Clark, G.M., and Goolsby, D.A., 1999,

Occurrence and transport of acetochlor in streams of the Mississippi River Basin: Journal of Environmental Quality, v. 28, no. 6, p. 1787-1795.

Clark, G.M., and Goolsby, D.A., 1999,

Trends in annual herbicide loads from the Mississippi River Basin to the Gulf of Mexico, 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. 237-246.

Clark, G.M., Goolsby, D.A., and Battaglin, W.A., 1999,

Seasonal and annual load of herbicides from the Mississippi River Basin to the Gulf of Mexico: Environmental Science and Technology, v. 33, no. 7, p. 981-986, doi:10.1021/es980962u.

Coupe, R.H., and Goolsby, D.A., 1992,

Herbicides in the Mississippi River and its major tributaries, April-June 1991, in Proceedings of the 24th Annual Meeting, Mississippi River Research Consortium, LaCrosse, Wisconsin, April 30-May 1, 1992: LaCrosse, Wisconsin, Mississippi River Research Consortium, Inc., p. 18-19.

Coupe, R.H., Goolsby, D.A., Iverson, J.L., Zaugg, S.D., and Markovchick, D.J., 1995,

Pesticide, nutrient, streamflow and physical property data for the Mississippi River and major tributaries, April 1991-September 1992: U.S. Geological Survey Open-File Report 93-657, 116 p.

Coupe, R.H., Manning, M.A., Foreman, W.T., Goolsby, D.A., and Majewski, M.S., 2000,

Occurrence of pesticides in rain and air in urban and agricultural areas of Mississippi, April-September 1995: The Science of the Total Environment, v. 248, no. 2-3, p. 227-240, doi:10.1016/S0048-9697(99)00545-8.

Coupe, R.H., Manning, M.A., Foreman, W.T., Goolsby, D.A., and Majewski, M.S., 1999,

Occurrence of pesticides in rain and air in urban and agricultural areas of Mississippi, April-September 1995, 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. 301-312.

Coupe, R.H., Manning, M.A., Foreman, W.T., Goolsby, D.A., and Majewski, M.S., 1998,

Occurrence of pesticides in air and rain in urban and agricultural areas of Mississippi, April-September 1995, in Daniel, J., ed., Proceedings of the 28th Mississippi Water Resources Conference, Raymond, Mississippi, April 7-8, 1998: Starkville, Mississippi, Mississippi Water Resources Institue, p. 106-116.

Coupe, R.H., and Thurman, E.M., 2001,

Pesticide concentrations in the Mississippi River--The importance of degradates, in Proceedings of the American Water Resources Association Annual Spring Specialty Conference, April 30-May 2, 2001: p. 147-152.

Coupe, R.H., Thurman, E.M., and Zimmerman, L.R., 1998,

Relation of usage to the occurrence of cotton and rice herbicides in three streams of the Mississippi Delta: Environmental Science and Technology, v. 32, no. 23, p. 3673-3680, doi:10.1021/es980342t.

Coupe, R.H., Welch, H.L., Pell, A.B., and Thurman, E.M., 2005,

Herbicide and degradate flux in the Yazoo River Basin: International Journal of Environmental Analytical Chemistry, v. 85, no. 15, p. 1127-1140, doi:10.1080/03067310500273351.

Cromwell, A.E., and Thurman, E.M., 1996,

Atrazine transport and degradation in a pristine watershed--The fate of atrazine deposited by precipitation, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 423-428.

Dankwardt, A., Wust, S., Elling, W., Thurman, E.M., and Hock, B., 1994,

Determination of atrazine in rainfall and surface water in Germany by enzyme immunoassay: Journal of Environmental Science and Pollution Research, v. 1, no. 4, p. 196-204.

DeJong, K.E., Siefrist, R.L., Barber, L.B., and Wren, A.L., 2004,

Occurrence of emerging organic chemicals in wastewater effluents from onsite systems, in Proceedings of the 10th National Symposium on Individual and Small Community Sewage Systems, Sacramento, California: American Society of Agricultural Engineers, p. 400-407 (paper no. 701P0104).

DeJong, K.E., Siegrist, R.L., Barber, L.B., and Wren, A.L., 2004,

Occurrence of emerging organic chemicals in onsite wastewater system effluents, in Proceedings of the 4th International Conference on Pharmaceuticals and Endocrine Disrupting Chemicals in Water, Minneapolis, Minnesota, October 13-15, 2004: National Ground Water Association, p. 40-41, CD-ROM.

Dietze, J.E., Scribner, E.A., Meyer, M.T., and Kolpin, D.W., 2005,

Occurrence of antibiotics in water from 13 fish hatcheries, 2001-2003: International Journal of Environmental Analytical Chemistry, v. 85, no. 15, p. 1141-1152, doi:10.1080/03067310500273682.

Domagalski, J.L., and Kuivila, K.M., 1993,

Distributions of pesticides and organic contaminant distributions between water and suspended sediment, San Francisco Bay, California: Estuaries, v. 16, no. 3A, p. 416-426.

Dombrowski, T.R., Thurman, E.M., and Mohrman, G.B., 1996,

A first application of enzyme-linked immunosorbent assay for screening cyclodiene insecticides in ground water, in Van Emon, J.M., Gerlach, C.L., and Johnson, J.C., eds., Environmental immunochemical methods: Washington, D.C., American Chemical Society ACS Symposium Series 646, p. 170-182.

Druliner, A.D., Goolsby, D.A., and Meyer, M., 1996,

Temporal distributions of herbicide and nitrite-nitrate concentrations and loads in the West Fork of the Big Blue River, Nebraska, 1990 and 1991-92, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 479-485.

Erickson, B.E., 2002,

Analyzing the ignored environmental contaminants: Environmental Science and Technology, v. 36, no. 7, p. 140 A-145 A.

Fairchild, J.F., Sappington, L.C., and Ruessler, D.S., 1999,

An ecological risk assessment of the potential for herbicide impacts on primary productivity of the Lower Missouri River, 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. 323-330.

Focazio, M.J., Kolpin, D.W., and Buxton, H., 2003,

Pharmaceuticals, hormones, personal-care products, and other organic wastewater contaminants in water resources -- recent research activities of the U.S. Geological Survey's Toxic Substances Hydrology Program: GeoHealth News, v. 2, no. 1, September 2003, p. 3-7.

Focazio, M.J., Kolpin, D.W., and Furlong, E.T., 2004,

Occurrence of human pharmaceuticals in water resources in the United States--A review, in Kummerer, K., ed., Pharmaceuticals in the environment--Sources, fate, effects, and risks: Berlin, Heidelberg, New York, Springer-Verlag, p. 91-106.

Focazio, M.J., Szabo, Z., Kraemer, T.F., Mullin, A.H., Barringer, T.H., and dePaul, V.T., 2001,

Occurrence of selected radionuclides in ground water used for drinking water in the United States--A targeted reconnaissance survey, 1998: U.S. Geological Survey Water-Resources Investigations Report 00-4273, 39 p.

Focazio, M.J., Tipton, D., Shapiro, S.D., and Geiger, L.H., 2006,

The chemical quality of self-supplied domestic well water in the United States: Ground Water Monitoring and Remediation, v. 26, no. 3, p. 92-104, doi:10.1111/j.1745-6592.2006.00089.x.

Fogarty, L.R., Haack, S.K., Wolcott, M.J., and Whitman, R.L., 2003,

Abundance and characteristics of the recreational water quality indicator bacteria Escherichia coli and enterococci in gull faeces: Journal of Applied Microbiology, v. 94, no. 5, p. 865-878, doi:10.1046/j.1365-2672.2003.01910.x.

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, v. 248, no. 2-3, p. 213-226, doi:10.1016/S0048-9697(99)00544-6.

Foreman, W.T., Majewski, M.S., Goolsby, D.A., Wiebe, F.W., and Coupe, R.H., 1999,

Pesticides in the atmosphere of the Mississippi River Valley, Part II--Air, 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. 263-274.

Frick, E.A., and Dalton, M.S., 2005,

Characterization of anthropogenic organic compounds in the source water and finished water for the City of Atlanta, October 2002-September 2004, in Hatcher, K.J., ed., Proceedings of the 2005 Georgia Water Resources Conference, Athens, Georgia, April 25-27, 2005: Institute of Ecology, The University of Georgia, Athens, Georgia, p. 125-131, CD-ROM.

Furlong, E.T., Ferrer, I., Glassmeyer, S., Cahill, J.D., Zaugg, S.D., Kolpin, D.W., and Kryak, D., 2003,

Distributions of organic wastewater contaminants between water and sediment in surface-water samples of the United States, in Proceedings of the 3rd International Conference on Pharmaceuticals and Endocrine Disrupting Chemicals in Water, Minneapolis, Minnesota, March 19-21, 2003: National Ground Water Association, p. 60-62, CD-ROM.

Galloway, J.M., Haggard, B.E., Meyer, M.T., and Green, W.R., 2005,

Occurrence of pharmaceuticals and other organic wastewater constituents in selected streams in northern Arkansas, 2004: U.S. Geological Survey Scientific Investigations Report 2005-5140, 31 p.

Gibs, J., Stackelberg, P.E., Furlong, E.T., Meyer, M., Zaugg, S.D., and Lippincott, R.L., 2007,

Persistence of pharmaceuticals and other organic compounds in chlorinated drinking water as a function of time: Science of the Total Environment, v. 373, no. 1, p. 240-249, doi:10.1016/j.scitotenv.2006.11.003.

Glassmeyer, S., Kolpin, D.W., Furlong, E.T., and Focazio, M.T., 2008,

Environmental presence and persistence of pharmaceuticals--An overview, in Aga, D.S., ed., Fate of Pharmaceuticals in the Environment and in Water Treatment Systems: CRC Press, Taylor and Francis Books, p. 3-51, ISBN:9781420052329.

Glassmeyer, S.T., Ferrer, I., Furlong, E.T., Cahill, J.D., Zaugg, S.D., Kolpin, D.W., and Kryak, D.D., 2003,

Transport of chemical and microbial contaminants from known wastewater discharges, in Proceedings of the 3rd International Conference on Pharmaceuticals and Endocrine Disrupting Chemicals in Water, Minneapolis, Minnesota, March 19-21, 2003: National Ground Water Association, p. 267-269, CD-ROM.

Glassmeyer, S.T., Furlong, E.T., Kolpin, D.W., Cahill, J.D., Zaugg, S.D., Werner, S.L., Meyer, M.T., and Kryak, D.D., 2005,

Transport of chemical and microbial compounds from known wastewater dishcarges--Potential for use as indicators of human fecal contamination: Environmental Science and Technology, v. 39, no. 14, p. 5157-5169, doi:10.1021/es048120k.

Glassmeyer, S.T., Furlong, E.T., Kolpin, D.W., Ferrer, I., Cahill, J.D., Zaugg, S.D., Werner, S.L., and Kryak, D.D., 2004,

Persistence of pharmaceuticals and other wastewater related compounds, in Proceedings of the 4th International Conference on Pharmaceuticals and Endocrine Disrupting Chemicals in Water, Minneapolis, Minnesota, October 13-15, 2004: National Ground Water Association, p. 42-43, CD-ROM.

Goolsby, D.A., 2000,

Flow of nitrogen into Mississippi Basin believed to cause Gulf hypoxia: Earth in Space, v. 13, no. 3, p. 6-10.

Goolsby, D.A., 2000,

Mississippi basin nitrogen flux believed to cause Gulf hypoxia: Eos, v. 81, no. 29, p. 321, 326-327.

Goolsby, D.A., 1995,

Dissolved herbicides, in Moody, J.A., ed., Data report on Mississippi--Upriver profiles, chemical data for water quality samples collected during four upriver transects of the Mississippi River between New Orleans, Louisiana, and St. Paul, Minnesota, May 1990-April 1992: U.S. Geological Survey Open-File Report 94-523, p. 297.

Goolsby, D.A., 1994,

Flux of herbicides and nitrate from the Mississippi River to the Gulf of Mexico during the 1993 flood, in Dowgiallo, M.J., ed., Coastal oceanographic effects of summer 1993 Mississippi River flooding--Special NOAA report: U.S. Department of Commerce, National Oceanic and Atmospheric Administration, p. 32-35.

Goolsby, D.A., 1991,

Agricultural chemicals in surface-water resources of the Midcontinental United States, in American Water Resources Association, NAWQA (National Water Quality Assessment Program) session, Proceedings, New Orleans, September, 1991: p. 373-374.

Goolsby, D.A., 1991,

Atrazine in the Midwestern United States, in U.S. Geological Survey Yearbook, Fiscal Year 1990, p. 55-57.

Goolsby, D.A., and Battaglin, W.A., 2001,

Long-term changes in concentrations and flux of nitrogen in the Mississippi River basin, USA: Hydrological Processes, v. 15, no. 7, p. 1209-1226, doi:10.1002/hyp.210.

Goolsby, D.A., and Battaglin, W.A., 2000,

Nitrogen in the Mississippi Basin--Estimating sources and predicting flux to the Gulf of Mexico: U.S. Geological Survey Fact Sheet 135-00, 6 p.

Goolsby, D.A., and Battaglin, W.A., 1995,

Occurrence and distribution of pesticides in streams of the Midwestern United States, in Leng, M.L., ed., Agrochemical environmental fate--State of the art: Boca Raton, Fla., Lewis Publishers, p. 159-173.

Goolsby, D.A., and Battaglin, W.A., 1994,

Occurrence and transport of pesticides in the Mississippi River basin, in Proceedings of WATERSHED93--A National Conference on River Basin Planning, Alexandria, Va., March 24, 1993: p. 827.

Goolsby, D.A., and Battaglin, W.A., 1993,

Occurrence, distribution, and transport of agricultural chemicals in surface waters of the Midwestern United States, in Goolsby, D.A., Boyer, L.L., and Mallard, G.E., eds., Selected papers on agricultural chemicals in water resources of the Midcontinental United States: U.S. Geological Survey Open-File Report 93-418, p. 1-25.

Goolsby, D.A., Battaglin, W.A., Aulenbach, B.T., and Hooper, R.P., 2001,

Nitrogen input to the Gulf of Mexico: Journal of Environmental Quality, v. 30, no. 2, p. 329-336.

Goolsby, D.A., Battaglin, W.A., Aulenbach, B.T., and Hooper, R.P., 2000,

Nitrogen flux and sources in the Mississippi River Basin: The Science of the Total Environment, v. 248, no. 2-3, p. 75-86, doi:10.1016/S0048-9697(99)00532-X.

Goolsby, D.A., Battaglin, W.A., Aulenbach, B.T., and Hooper, R.P., 1999,

Nitrogen flux and sources in the Mississippi River Basin, 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. 203-213.

Goolsby, D.A., Battaglin, W.A., Fallon, J.D., Aga, D.S., Kolpin, D.W., and Thurman, E.M., 1996,

Persistence of herbicides in selected reservoirs in the midwestern United States--Some preliminary results: Iowa Groundwater Quarterly, v. 7, no. 2, p. 11-16 (reprinted from U.S. Geological Survey Open-File Report 93-418).

Goolsby, D.A., Battaglin, W.A., Fallon, J.D., Aga, D.S., Kolpin, D.W., and Thurman, E.M., 1993,

Persistence of herbicides in selected reservoirs in the Midwestern United States--Some preliminary results, in Goolsby, D.A., Boyer, L.L., and Mallard, G.E., eds., Selected papers on agricultural chemicals in water resources of the Midcontinental United States: U.S. Geological Survey Open-File Report 93-418, p. 51-63.

Goolsby, D.A., Battaglin, W.A., Fallon, J.D., Aga, D.S., Koplin, D.W., and Thurman, E.M., 1996,

Persistence of herbicides in selected reservoirs in the Midwestern United States--Some preliminary results, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 487-497.

Goolsby, D.A., Battaglin, W.A., and Hooper, R.P., 1997,

Sources and transport of nitrogen in the Mississippi River Basin, in From the Corn Belt to the Gulf--Agriculture and Hypoxia in the Mississippi River Watershed, Proceedings, St. Louis, Mo., July 14-15, 1997: American Farm Bureau Federation, p. 6.

Goolsby, D.A., Battaglin, W.A., Lawrence, G.B., Artz, R.S., Aulenbach, B.T., Hooper, R.P., Keeney, D.R., and Stensland, G.J., 1999,

Flux and sources of nutrients in the Mississippi-Atchafalaya River Basin--Topic 3, Report for the integrated assessment on hypoxia in the Gulf of Mexico: National Oceanic and Atmospheric Administration NOAA Coastal Ocean Program Decision Analysis Series No. 17, 129 p.

Goolsby, D.A., Battaglin, W.A., and Thurman, E.M., 1994,

Occurrence and transport of herbicides and nitrate in the Mississippi River during the 1993 flood--Proceedings of American Water Resources Association meeting, in, Nashville, Tenn., April 17-20, 1994: p. 473-477.

Goolsby, D.A., Battaglin, W.A., and Thurman, E.M., 1993,

Occurrence and transport of agricultural chemicals in the Mississippi River basin, July through August 1993--Floods in the Upper Mississippi River Basin, 1993: U.S. Geological Survey Circular 1120-C, 22 p.

Goolsby, D.A., Boyer, L.L., and Battaglin, W.A., 1994,

Plan of study to determine the effect of changes in herbicide use on herbicide concentrations in midwestern streams, 1989-94: U.S. Geological Survey Open-File Report 94-347, 14 p.

Goolsby, D.A., Coupe, R.H., and Markovchick, D.J., 1991,

Distribution of selected herbicides and nitrate in the Mississippi River and its major tributaries, April through June 1991: U.S. Geological Survey Water-Resources Investigations Report 91-4163, 35 p.

Goolsby, D.A., Hooper, R.P., and Battaglin, W.A., 1998,

Sources and transport of nitrogen in the Mississippi River Basin, in Proceedings "From the Corn Belt to the Gulf...Agriculture and Hypoxia in the Mississippi River Watershed," American Farm Bureau Federation Workshop, St Louis, Missouri, July 14-15, 1997: St Louis, Missouri, American Farm Bureau Federation, p. 59-64 (document has no page numbers).

Goolsby, D.A., and Pereira, W.E., 1996,

Pesticides in the Mississippi River, in Meade, R.H., ed., Contaminants in the Mississippi River: U.S. Geological Survey Circular 1133, p. 86-101.

Goolsby, D.A., Scribner, E.A., Thurman, E.M., Meyer, M.T., and Pomes, M.L., 1995,

Data on selected herbicides and two triazine metabolites in precipitation in the midwestern and northeastern United States, 1990-91: U.S. Geological Survey Open-File Report 95-469, 341 p.

Goolsby, D.A., and Thurman, E.M., 1990,

Herbicides in rivers and streams of the Upper Midwestern United States, in The Proceedings of the 46th Annual Meeting of the Upper Mississippi River Conservation Committee, Bettendorf, Iowa, March 13-15, 1990: p. 99-106.

Goolsby, D.A., and Thurman, E.M., 1990,

Pesticides in streams of the Upper Midwestern United States, in Proceedings of the 7th Annual Water and the Future of Kansas Conference, Manhattan, Kansas, March 7-8, 1990: p. 27-28.

Goolsby, D.A., Thurman, E.M., Clark, M.L., and Pomes, M.L., 1991,

Immunoassay as a screening tool for triazine herbicides in streams--comparison with gas chromatographic-mass spectrometric methods, in Vanderlaan, M., Stanker, L.H., Watkins, B.E., and Roberts, D.E., eds., Immunoassays for Trace Chemical Analysis--Monitoring toxic chemicals in humans, food, and the environment: Washington, D.C., American Chemical Society ACS Symposium Series 451, p. 86-99.

Goolsby, D.A., Thurman, E.M., and Kolpin, D.W., 1991,

Geographic and temporal distribution of herbicides in surface waters of the Upper Midwestern United States, 1989-90, in Mallard, G.E., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Monterey, California, March 11-15, 1991: U.S. Geological Survey Water-Resources Investigations Report 91-4034, p. 183-188.

Goolsby, D.A., Thurman, E.M., and Kolpin, D.W., 1991,

Geographic and temporal distribution of herbicides in surface waters of the upper midwestern United States, 1989-90, in Mallard, G.E., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Monterey, California, March 11-15, 1991: U.S. Geological Survey Water-Resources Investigations Report 91-4034, p. 183-188.

Goolsby, D.A., Thurman, E.M., and Kolpin, D.W., 1991,

Herbicides in streams--Midwestern United States, in ASE Irrigation and Drainange Engineering Conference, Proceedings, Honolulu, Hawaii, July 22-26, 1991: p. 17-23.

Goolsby, D.A., Thurman, E.M., Kolpin, D.W., and Battaglin, W.A., 1995,

Occurrence of herbicides and metabolites in surface water, ground water and rainwater, in the midwestern United States--Proceedings of 1995 AWWA Conference, in, Anaheim, CA, June 18-22, 1995: p. 583-591.

Goolsby, D.A., Thurman, E.M., Kolpin, D.W., and Meyer, M.T., 1995,

Herbicides and metabolites in surface water, rainwater, and ground water in the midwestern United States--Proceedings of 209th ACS National Meeting, in, Anaheim, California, April 2-7, 1995: p. 278-281.

Goolsby, D.A., Thurman, E.M., Pomes, M.L., and Battaglin, W.A., 1994,

Temporal and geographic distribution of herbicides in precipitation in the midwest and northeast United States, 1990-91--Proceedings of the Fourth National Pesticide Conference, in, Richmond, Va., November 1-3, 1993: p. 697-710.

Goolsby, D.A., Thurman, E.M., Pomes, M.L., Meyer, M., and Battaglin, W.A., 1996,

Occurrence, deposition, and long range transport of herbicides in precipitation in the Midwestern and Northeastern United States, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 411-421.

Goolsby, D.A., Thurman, E.M., Pomes, M.L., Meyer, M., and Battaglin, W.A., 1993,

Occurrence, deposition, and long range transport of herbicides in precipitation in the Midwestern and Northeastern United States, in Goolsby, D.A., Boyer, L.L., and Mallard, G.E., eds., Selected papers on agricultural chemicals in water resources of the Midcontinental United States: U.S. Geological Survey Open-File Report 93-418, p. 75-89.

Goolsby, D.A., Thurman, E.M., Pomes, M.L., Meyer, M.T., and Battaglin, W.A., 1997,

Herbicides and their metabolites in rainfall--Origin, transport, and deposition patterns across the midwestern and northeastern United States, 1990-1991: Environmental Science and Technology, v. 31, no. 5, p. 1325-1333, doi:10.1021/es960847o.

Harned, D.A., 1989,

The hydrogeologic framework and a reconnaissance of ground-water quality in the Piedmont Province of North Carolina, with a design for future study: U.S. Geological Survey Water-Resources Investigations Report 88-4130, 55 p.

Hay, L.E., and Battaglin, W.A., 1996,

A visual/interactive method for examining the National Stream Quality Accounting Network (NASQAN) data--Proceedings of Watershed'96, in, Baltimore, Md., June 8-12, 1996: p. 317-319.

Hinkle, S.R., Weick, R.J., Johnson, J.M., Cahill, J.D., S.G., S., and Rich, B.J., 2005,

Organic wastewater compounds, pharmaceuticals, and coliphage in ground water receiving discharge from onsite wastewater treatment systems near La Pine, Oregon--Occurrence and implications for transport: U.S. Geological Survey Scientific Investigations Report 2005-5055, 98 p.

Kalkhoff, S.J., Kolpin, D.W., Thurman, E.M., Ferrer, I., and Barcelo, D., 1998,

Degradation of chloroacetanilide herbicides--The prevalence of sulfonic and oxanilic acid metabolites in Iowa ground and surface waters: Environmental Science and Technology, v. 32, no. 11, p. 1738-1740, doi:10.1021/es971138t.

Kalkhoff, S.J., Lee, K.E., Porter, S.D., Terrio, P.J., and Thurman, E.M., 2003,

Herbicides and herbicide degradation products in upper midwest agricultural streams during August base-flow conditions: Journal of Environmental Quality, v. 32, p. 1025-1035.

Karthikeyan, K.G., and Meyer, M.T., 2006,

Occurrence of antibiotics in wastewater treatment facilities in Wisconsin, USA: Science of the Total Environment, v. 361, no. 1-3, p. 196-207, doi:10.1016/j.scitotenv.2005.06.030.

Kendall, C., Battaglin, W.A., Cabana, G., Chang, C.C., Silva, S.R., Porter, S.D., Goolsby, D.A., Campbell, D.H., Hooper, R.P., and Schmitt, C.J., 1999,

Isotopic tracing of nitrogen sources and cycling in the Mississippi River Basin, 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. 339-343.

Kimball, B.A., Nordstrom, D.K., Runkel, R.L., and Verplanck, P.L., 2006,

Questa baseline and pre-mining ground-water quality investigation. 23. Quantification of solute mass loading for Red River, New Mexico: U.S. Geological Survey Scientific Investigations Report 2006-5004.

Kinney, C.A., Furlong, E.T., Zaugg, S.D., Burkhardt, M.R., Werner, S.L., Cahill, J.D., and Jorgensen, G.R., 2006,

Survey of organic wastewater contaminants in biosolids destined for land application: Environmental Science and Technology, v. 40, no. 23, p. 7207-7215, doi:10.1021/es0603406.

Kolker, A., Haack, S.K., Cannon, W.F., Westjohn, D.B., Kim, M.-J., Nriagu, J., and Woodruff, L.G., 2003,

Arsenic in southeastern Michigan, in Welch, A.H., and Stollenwerk, K.G., eds., Arsenic in ground water--Geochemistry and occurrence: Boston, Kluwer Academic Publishers, p. 281-294.

Kolpin, D.W., 2000,

Importance of the Mississippi River Basin for investigating agricultural--chemical contamination of the hydrologic cycle: The Science of the Total Environment, v. 248, no. 2-3, p. 71-72, doi:10.1016/S0048-9697(99)00530-6.

Kolpin, D.W., 1997,

Agricultural chemicals in groundwater of the midwestern United States--Relations to land use: Journal of Environmental Quality, v. 26, no. 4, p. 1025-1037.

Kolpin, D.W., 1995,

Agricultural chemicals in ground water of the Midwest--Proceedings of the 12th Annual Water and the Future of Kansas Conference, in, Manhattan, Kansas, February 28-March 1, 1995: p. 19-21.

Kolpin, D.W., Battaglin, W.A., Conn, K.E., Furlong, E.T., Glassmeyer, S.T., Kalkhoff, S.J., Meyer, M.T., and Schnoebelen, D.J., 2008,

Occurrence of transformation products in the environment, in Boxall, A., ed., Degradation of Synthetic Chemicals in the Environment, The Handbook of Environmental Chemistry: Berlin, Springer-Verlag (Advanced Web release).

Kolpin, D.W., Battaglin, W.A., Meyer, M.T., Schnoebelen, D.J., and Kalkhoff, S.J., 2004,

Pesticide degradates--Monitoring and occurrence, in Proceedings of International Symposium on Pesticides, their Degradates, and Adjuvants, Prague, Czech Republic, June 4, 2004.

Kolpin, D.W., and Burkart, M.R., 1991,

Work plan for regional reconnaissance for selected herbicides and nitrate in ground water of the Midcontinent United States, 1991: U.S. Geological Survey Open-File Report 91-59, 18 p.

Kolpin, D.W., Burkart, M.R., and Goolsby, D.A., 1999,

Nitrate in groundwater of the Midwestern United States--A regional investigation on relations to land use and soil properties: International Association of Hydrological Sciences (IAHS) Publication no. 257, p. 111-116.

Kolpin, D.W., Burkart, M.R., and Thurman, E.M., 1994,

Herbicides and nitrate in near-surface aquifers of the Mid-Continent United States: U.S. Geological Survey Water-Supply Paper 2413, 34 p.

Kolpin, D.W., Burkart, M.R., and Thurman, E.M., 1993,

Hydrogeologic, water-quality and land-use data for the reconnaissance of herbicides and nitrate in near-surface aquifers of the Midcontinental United States: U.S. Geological Survey Open-File Report 93-114, 61 p.

Kolpin, D.W., Furlong, E.T., Meyer, M.T., Thurman, E.M., Zaugg, S.D., Barber, L.B., and Buxton, H.T., 2003,

Response to comment by Till (2003) on "Pharmaceuticals, hormones, and other organic wastewaters in U.S. streams, 1999-2000--A national reconnaissance": Environmental Science and Technology, v. 37, no. 5, p. 1054, doi:10.1021/es0202356.

Kolpin, D.W., Furlong, E.T., Meyer, M.T., Thurman, E.M., Zaugg, S.D., Barber, L.B., and Buxton, H.T., 2002,

Pharmaceuticals, hormones, and other organic wastewater contaminants in U.S. streams, 1999-2000--A national reconnaissance: Environmental Science and Technology, v. 36, no. 6, p. 1202-1211.

Kolpin, D.W., Furlong, E.T., Meyer, M.T., Thurman, E.M., Zaugg, S.D., Barber, L.B., and Buxton, H.T., 2002,

Response to comment on "Pharmaceuticals, hormones, and other organic wastewater contaminants in U.S. streams, 1999-2000--A national reconnaissance: Environmental Science and Technology, v. 36, no. 18, p. 4004, doi:10.1021/es0201350.

Kolpin, D.W., Furlong, E.T., Meyer, M.T., Thurman, E.M., Zaugg, S.D., Barber, L.B., and Buxton, H.T., 2002,

Response to comment on "Pharmaceuticals, hormones, and other organic wastewater contaminants in U.S. streams, 1999-2000--A national reconnaissance: Environmental Science and Technology, v. 36, no. 18, p. 4007-4008, doi:10.1021/es020136s.

Kolpin, D.W., Furlong, E.T., Meyer, M.T., Thurman, E.M., Zaugg, S.D., Barber, L.B., and Buxton, H.T., 2002,

Response to comment on "Pharmaceuticals, hormones, and other organic wastewater contaminants in U.S. streams, 1999-2000: A national reconnaissance": Environmental Science and Technology, v. 37, no. 5, p. 1054, doi:10.1021/es0202356.

Kolpin, D.W., and Goolsby, D.A., 1995,

A regional monitoring network to investigate the occurrence and distribution of agricultural chemicals in near-surface aquifers of the midcontinental United States, in Proceedings of Conference on Groundwater Quality--Remediation and Protection: International Association of Hydrological Sciences Publication No. 225, p. 13-20.

Kolpin, D.W., Goolsby, D.A., Aga, D.S., Iverson, J.L., and Thurman, E.M., 1996,

Pesticides in near-surface aquifers--Results of the Midcontinental United States ground-water reconnaissance, 1991-92, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 505-513.

Kolpin, D.W., Goolsby, D.A., Aga, D.S., Iverson, J.L., and Thurman, E.M., 1993,

Pesticides in near-surface aquifers--Results of the Midcontinental United States ground-water reconnaissance, 1991-92, in Goolsby, D.A., Boyer, L.L., and Mallard, G.E., eds., Selected papers on agricultural chemicals in water resources of the Midcontinental United States: U.S. Geological Survey Open-File Report 93-418, p. 64-74.

Kolpin, D.W., Goolsby, D.A., and Thurman, E.M., 1995,

Pesticides in near-surface aquifers--An assessment using highly sensitive analytical methods and tritium: Journal of Environmental Quality, v. 24, no. 6, p. 1125-1132.

Kolpin, D.W., Hallberg, G., Sneck-Fahrer, D.A., and Libra, R., 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.

Kolpin, D.W., Kalkhoff, S.J., Goolsby, D.A., Sneck-Fahrer, D.A., and Thurman, E.M., 1997,

Occurrence of selected herbicides and herbicide degradation products in Iowa's ground water, 1995: Ground Water, v. 35, no. 4, p. 679-688.

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 and Technology, v. 30, no. 5, p. 1459-1464, doi:10.1021/es9503241.

Kolpin, D.W., Schnoebelen, D.J., and Thurman, E.M., 2004,

Degradates provide insight to spatial and temporal trends of herbicides in ground water: Ground Water, v. 42, no. 4, p. 601-608.

Kolpin, D.W., Skopec, M., Meyer, M.T., Furlong, E.T., and Zaugg, S.D., 2004,

Urban contribution of pharmaceuticals and other organic wastewater contaminants to streams during differing flow conditions: Science of the Total Environment, v. 328, no. 1-3, p. 119-130, doi:10.1016/j.scitotenv.2004.01.015.

Kolpin, D.W., Sneck-Fahrer, D.A., Hallberg, G.R., and Libra, R.D., 1997,

Temporal trends of selected agricultural chemicals in Iowa's groundwater, 1982-1995--Are things getting better?: Journal of Environmental Quality, v. 26, no. 4, p. 1007-1017.

Kolpin, D.W., Stamer, J.K., Goolsby, D.A., and Thurman, E.M., 1998,

Herbicides in ground water of the Midwest--A regional study of shallow aquifers, 1991-94: U.S. Geological Survey Fact Sheet FS-076-98, 4 p.

Kolpin, D.W., and Thurman, E.M., 1995,

Post-flood occurrence of selected agricultural chemicals and volatile organic compounds in near-surface unconsolidated aquifers in the Mississippi River Basin, 1993: U.S. Geological Survey Circular 1120G, 20 p.

Kolpin, D.W., Thurman, E.M., and Goolsby, D.A., 1996,

Occurrence of selected pesticides and their metabolites in near-surface aquifers of the midwestern United States: Environmental Science and Technology, v. 30, no. 1, p. 335-340, doi:10.1021/es950341q.

Kolpin, D.W., Thurman, E.M., Lee, E.A., Meyer, M.T., Furlong, E.T., and Glassmeyer, S.T., 2006,

Urban contributions of glyphosate and its degradate AMPA to streams in the United States: Science of the Total Environment, v. 354, no. 2-3, p. 191-197, doi:10.1016/j.scitotenv.2005.01.028.

Kolpin, D.W., Thurman, E.M., and Linhart, S.M., 2001,

Occurrence of cyanazine compounds in groundwater--Degradates more prevalent than the parent compound: Environmental Science and Technology, v. 35, no. 6, p. 1217-1222, doi:10.1021/es001520x.

Kolpin, D.W., Thurman, E.M., and Linhart, S.M., 2000,

Finding minimal herbicide concentrations in ground water? Try looking for their degradates: The Science of the Total Environment, v. 248, no. 2-3, p. 115-122, doi:10.1016/S0048-9697(99)00535-5.

Kolpin, D.W., Thurman, E.M., and Linhart, S.M., 1999,

Finding minimal herbicide concentrations in ground water? Try looking for the degradates, 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. 247-254.

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, v. 35, no. 3, p. 385-390, doi:10.1007/s002449900392.

Kolpin, D.W., Zichelle, K.E., and Thurman, E.M., 1996,

Water-quality data for pesticides, nutrients, and volatile organic compounds in near-surface aquifers of the midcontinental United States, 1992-1994: U.S. Geological Survey Open-File Report 96-435, 47 p.

Krapac, I.G., Koike, S., Meyer, M.T., Snow, D.D., Chou, S.F.J., Mackie, R.I., Roy, W.R., and Chee-Sanford, J.C., 2004,

Long term monitoring of the occurrence of antibiotics residues and antibiotic resistance genes in groundwater near swine confinement facilities, in Proceedings of the 4th International Conference on Pharmaceuticals and Endocrine Disrupting Chemicals in Water, Minneapolis, Minnesota, October 13-15, 2004: National Ground Water Association, p. 158-174, CD-ROM.

Kuivila, K.M., 1992,

Distribution of pesticides in the Sacramento-San Joaquin Delta, in U.S. Geological Survey Yearbook, Fiscal Year 1991, p. 67-70.

Kuivila, K.M., and Jennings, B.E., 2007,

Input, flux, and persistence of six select pesticides in San Francisco Bay: International Journal of Environmental Analytical Chemistry, v. 87, no. 13, p. 897-911, doi:10.1080/03067310701619014.

Kuivila, K.M., Sheipline, R.C., and Foe, C.G., 1996,

Distribution and possible biological effects of diazinon in the San Joaquin River and the Sacramento-San Joaquin Delta, California, February 1993, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 2, p. 705-710.

Landon, M.K., Delin, G.N., Guo, L., Regan, C.P., Lamb, J.A., Anderson, J.L., and Dowdy, R.H., 1993,

Occurrence of agricultural chemicals in ground water at the Management Systems Evaluation Area (MSEA) near Princeton, Minnesota, 1991, in Agricultural Research to Protect Water Quality--Proceedings of the Conference, Minneapolis, Minn., February 21-24, 1993: Ankeny, Iowa, Soil and Water Conservation Society, p. 434-438.

Larson, S.J., Capel, P.D., Goolsby, D.A., Zaugg, S.D., and Sandstrom, M.W., 1995,

Relations between pesticide use and riverine flux in the Mississippi River basin: Chemosphere, v. 31, no. 5, p. 3305-3321.

Lawrence, G.B., Goolsby, D.A., and Battaglin, W.A., 1999,

Atmospheric deposition of nitrogen in the Mississippi River Basin, 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. 331-337.

Lawrence, G.B., Goolsby, D.A., Battaglin, W.A., and Stensland, G.J., 2000,

Atmospheric nitrogen in the Mississippi River Basin--emissions, deposition and transport: The Science of the Total Environment, v. 248, no. 2-3, p. 87-99, doi:10.1016/S0048-9697(99)00533-1.

Lee, K.E., Barber, L.B., Cahill, J.D., Furlong, E.T., Kolpin, D.W., Meyer, M.T., and Zaugg, S.D., 2004,

Presence and distribution of organic wastewater compounds in wastewater, surface, ground, and drinking waters, Minnesota, 2000-02: U.S. Geological Survey Scientific Investigations Report 2004-5138, 47 p.

Leenheer, J.A., 1998,

Water quality issues in the Mississippi River, 1987-1992, in Proceedings of The Delta, Connecting Points of View for Sustainable Natural Resources, Memphis, Tennessee, August 13-16, 1998: p. 519-522.

Leenheer, J.A., Barber, L.B., Rostad, C.E., and Noyes, T.I., 1995,

Data on natural organic substances in dissolved, colloidal, suspended-silt, and -clay and bed-sediment phases in the Mississippi River and some of its tributaries, 1991-92: U.S. Geological Survey Water-Resources Investigations Report 94-4191, 47 p.

Leenheer, J.A., Noyes, T.I., and Brown, P.A., 1995,

Data on natural organic substances in dissolved, colloidal, suspended-silt and clay, and bed-sediment phases in the Mississippi River and some of its tributaries, 1987-4204: U.S. Geological Survey Water-Resources Investigations Report 93-4204, 71 p.

Liu, S., Yen, S., and Kolpin, D.W., 1996,

Atrazine concentrations in near-surface aquifers--A censored regression approach: Journal of Environmental Quality, v. 25, no. 5, p. 992-999.

Liu, S., Yen, S., and Kolpin, D.W., 1996,

Pesticides in groundwater--Do atrazine metabolites matter?: Water Resources Bulletin, v. 32, no. 4, p. 845-853, doi:10.1111/j.1752-1688.1996.tb03481.x.

Loper, C.A., Crawford, J.K., Otto, K.L., Manning, R.L., Meyer, M.T., and Furlong, E.T., 2007,

Concentrations of selected pharmaceuticals and antibiotics in south-central Pennsylvania waters, March through September 2006: U.S. Geological Survey Data Series 300, 101 p.

Lucey, K.J., and Goolsby, D.A., 1993,

Effects of climatic variations over 11 years on nitrate-nitrogen concentrations in the Raccoon River, Iowa: Journal of Environmental Quality, v. 22, p. 38-46.

Luoma, S.N., 1999,

Emerging contaminant issues from an ecological perspective, 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. 3-8.

Majewski, M.S., Foreman, W.F., Goolsby, D.A., and Nakagaki, N., 1998,

Airborne pesticide residues along the Mississippi River: Environmental Science and Technology, v. 32, no. 23, p. 3689-3698, doi:10.1021/es9802403.

Majewski, M.S., Foreman, W.T., and Goolsby, D.A., 2000,

Pesticides in the atmosphere of the Mississippi River Valley, part I -- rain: The Science of the Total Environment, v. 248, no. 2-3, p. 201-212, doi:10.1016/S0048-9697(99)00543-4.

Majewski, M.S., Foreman, W.T., and Goolsby, D.A., 1999,

Pesticides in the atmosphere of the Mississippi River Valley, Part I--Rain, 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. 255-261.

Mallard, G.E., and Goolsby, D.A., 1991,

U.S. Geological Survey investigations of agricultural chemicals in surface and groundwater, in Proceedings of Environment Virginia--The second annual symposium for the protection and management of air, land and water resources, Lexington, Va., April 2-3, 1991: VMI Research Laboratories, Inc., and Virginia Power, p. 30-33.

McIsaac, G.F., David, M.B., Gertner, G.Z., and Goolsby, D.A., 2002,

Relating net nitrogen input in the Mississippi River Basin to nitrate flux in the Lower Mississippi River--A comparison of approaches: Journal of Environmental Quality, v. 31, p. 1610-1622.

McMahon, P.B., and Böhlke, J.K., 2006,

Regional patterns in the isotopic composition of natural and anthropogenic nitrate in groundwater, High Plains, USA: Environmental Science and Technology, v. 40, no. 9, p. 2965-2970, doi:10.1021/es052229q.

McMahon, P.B., and Chapelle, F.H., 2008,

Redox processes and water quality of selected principal aquifer systems: Ground Water, v. 46, no. 2, p. 259-271, doi:10.1111/j.1745-6584.2007.00385.x.

Meyer, M.T., 2004,

Use and environmental occurrence of veterinary pharmaceuticals in the United States, in Kummerer, K., ed., Pharmaceuticals in the Environment: Sources, Fate, Effects, and Risks: Berlin, Heidelberg, New York, Springer-Verlag, p. 155-163.

Meyer, M.T., 1994,

Geochemistry of cyanazine and its metabolites--Indicators of contaminant transport in surface water of the midwestern United States: Lawrence, University of Kansas, Department of Geology, Ph.D. thesis, 364 p.

Meyer, M.T., Bumgarner, J.E., Thurman, E.M., Hostetler, K.A., and Daughtridge, J.V., 1999,

A radioimmunoassay method to screen for antibiotics in liquid waste at confined livestock operations, with confirmation by liquid chromatography/mass spectrometry, 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. 465-470.

Meyer, M.T., Bumgarner, J.E., Varns, J.L., Daughtridge, J.V., Thurman, E.M., and Hostetler, K.A., 2000,

Use of radioimmunoassay as a screen for antibiotics in confined animal feeding operations and confirmation by liquid chromatography/mass spectrometry: The Science of the Total Environment, v. 248, no. 2-3, p. 181-187, doi:10.1016/S0048-9697(99)00541-0.

Meyer, M.T., Ferrell, G., Bumgarner, J., Cole, D., Hutchins, S., Krapac, I., Johnson, K., and Kolpin, D., 2003,

Occurrence of antibiotics in swine confined animal feeding operation lagoon samples from multiple states 1998-2002--Indicators of antibiotic use, in Proceedings of the 3rd International Conference on Pharmaceuticals and Endocrine Disrupting Chemicals in Water, Minneapolis, Minnesota, March 19-21, 2003: National Ground Water Association, p. 95, CD-ROM.

Meyer, M.T., and Thurman, E.M., 1996,

The transport and degradation of cyanazine metabolites in surface water of the Midwestern United States, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 463-470.

Meyer, M.T., Thurman, E.M., and Goolsby, D.A., 2001,

Differentiating nonpoint sources of deisopropylatrazine in surface water using discrimination diagrams: Journal of Environmental Quality, v. 30, no. 5, p. 1836-1843.

Meyer, M.T., Thurman, E.M., and Goolsby, D.A., 1996,

Cyanazine, atrazine, and their metabolites as geochemical indicators of contaminant transport in the Mississippi River, in Meyer, M.T., and Thurman, E.M., eds., Herbicide metabolites in surface water and groundwater: Washington, D.C., American Chemical Society ACS Symposium Series 630, p. 288-303.

Meyer, M.T., and Thurman, E.M., eds., 1996,

Herbicide metabolites in surface water and groundwater: American Chemical Society ACS Symposium Series 630, 318 p.

Mills, P.C., Kolpin, D.W., Scribner, E.A., and Thurman, E.M., 2005,

Herbicides and degradates in shallow aquifers of Illinois - Spatial and temporal trends: Journal of the American Water Resources Association, v. 41, no. 3, p. 537-547, doi:10.1111/j.1752-1688.2005.tb03753.x.

Mishra, A., Ray, C., and Kolpin, D.W., 2004,

Use of qualitative and quantitative information in neural networks for assessing agricultural chemical contamination of domestic wells: Journal of Hydrologic Engineering, v. 9, no. 6, p. 502-511, doi:10.1061/(ASCE)1084-0699(2004)9:6(502).

Moody, J.A., and Goolsby, D.A., 1993,

Spatial variability of triazine herbicides in the lower Mississippi River: Environmental Science and Technology, v. 27, no. 10, p. 2120-2126, doi:10.1021/es00047a018.

Mueller, D.K., Ruddy, B.C., and Battaglin, W.A., 1997,

Logistic model of nitrate in streams of the upper-midwestern United States: Journal of Environmental Quality, v. 26, no. 5, p. 1223-1230.

Mueller, D.K., Ruddy, B.C., and Battaglin, W.A., 1996,

Relation of nitrate concentrations in surface water to land use in the Upper-Midwestern United States, 1989-90, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 441-448.

Mueller, D.K., Ruddy, B.C., and Battaglin, W.A., 1993,

Relation of nitrate concentrations in surface water to land use in the upper-Midwestern United States, 1989-90, in Goolsby, D.A., Boyer, L.L., and Mallard, G.E., eds., Selected papers on agricultural chemicals in water resources of the Midcontinental United States: U.S. Geological Survey Open-File Report 93-418, p. 41-50.

Mueller, S.H., Goldfarb, M.L., Farmer, G.L., Sanzolone, R., Adams, M., Theodorakos, P.M., Richmond, S.A., and McCleskey, R.B., 2002,

Trace, minor, and major element data for ground water near Fairbanks, Alaska, 1999-2000: U.S. Geological Survey Open-File Report 02-90, 12 p.

Mueller, S.H., Verplanck, P.L., and Goldfarb, R.J., 2001,

Ground-water studies in Fairbanks, Alaska--A better understanding of some of the United States' highest natural arsenic concentrations: U.S. Geological Survey Fact Sheet 111-01, 2 p.

Murphy, S.F., 2006,

State of the watershed--Water quality of Boulder Creek, Colorado: U.S. Geological Survey Circular 1284, 34 p.

Myhre, S.H., and Bencala, K.E., 1998,

Surface-water quality data--Permanante and Saratoga Creeks, Santa Clara Valley, California, water year 1997: U.S. Geological Survey Open-File Report 98-4, 39 p.

Oblinger, C.J., Gill, A.C., McPherson, A.K., Meyer, M.T., and Furlong, E.T., 2007,

Occurrence of selected pharmaceuticals, personal-care products, organic wastewater compounds, and pesticides in the lower Tallapoosa River watershed near Montgomery, Alabama, 2005: U.S. Geological Survey Scientific Investigations Report 2007-5266, 23 p.

Orlando, J.L., Jacobson, L.A., and Kuivila, K.M., 2004,

Dissolved pesticide and organic carbon concentrations detected in surface waters, northern Central Valley, California, 2001–2002: U.S. Geological Survey Open-File Report 2004-1214, 32 p.

Orlando, J.L., and Kuivila, K.M., 2006,

Seasonal changes in concentrations of dissolved pesticides and organic carbon in the Sacramento–San Joaquin Delta, California, 1994–1996: U.S. Geological Survey Data Series 197, 32 p.

Pereira, W.E., Domagalski, J.L., Hostettler, F.D., Brown, L.R., and Rapp, J.B., 1996,

Occurrence and accumulation of pesticides and organic contaminants in river sediment, water and clam tissues from the San Joaquin River and tributaries, California: Environmental Toxicology and Chemistry, v. 15, no. 2, p. 172-180, doi:10.1897/1551-5028(1996)015<0172:OAAOPA>2.3.CO;2.

Pereira, W.E., and Hostettler, F.D., 1993,

Nonpoint source contamination of the Mississippi River and its tributaries by herbicides: Environmental Science and Technology, v. 27, no. 8, p. 1542-1552, doi:10.1021/es00045a008.

Pereira, W.E., Hostettler, F.D., Cashman, J.R., and Nishioka, R.S., 1994,

Occurrence and distribution of organochlorine compounds in sediment and livers of Striped Bass (Morone saxatilis) from the San Francisco Bay-Delta Estuary: Marine Pollution Bulletin, v. 28, no. 7, p. 434-441, doi:10.1016/0025-326X(94)90129-5.

Pereira, W.E., Hostettler, F.D., and Rapp, J.B., 1996,

Distributions and fate of chlorinated pesticides, biomarkers and polycyclic aromatic hydrocarbons in sediments along a contamination gradient from a point-source in San Francisco Bay, California: Marine Environmental Research, v. 41, no. 3, p. 299-314, doi:10.1016/0141-1136(95)00021-6.

Pereira, W.E., Hostettler, F.D., van Geen, A., Fuller, C.C., and Anima, R., 1998,

Distributions and fate of chlorinated pesticides, biomarkers and polycyclic aromatic hydrocarbons in sediments along a contamination gradient from a point-source in San Francisco Bay, California, 1996: Marine Environmental Research, v. 41, no. 3, p. 299-314.

Pereira, W.E., Moody, J.A., Hostettler, F.D., Rostad, C.E., and Leiker, T.J., 1995,

Concentrations and mass transport of pesticides and organic contaminants in the Mississippi River and some of its tributaries, 1987-89: U.S. Geological Survey Open-File Report 94-376, 169 p.

Pereira, W.E., and Rostad, C.E., 1990,

Occurrence, distributions, and transport of herbicides and their degradation products in the lower Mississippi River and its tributaries: Environmental Science and Technology, v. 24, no. 9, p. 1400-1406, doi:10.1021/es00079a015.

Pereira, W.E., Rostad, C.E., and Leiker, T.J., 1992,

Synthetic organic agrochemicals in the lower Mississippi River and its major tributaries--Distribution, transport and fate: Journal of Contaminant Hydrology, v. 9, p. 175-188, doi:10.1016/0169-7722(92)90057-L.

Pereira, W.E., Rostad, C.E., and Leiker, T.J., 1990,

Distribution of agrochemicals in the lower Mississippi River and its tributaries: The Science of the Total Environment, v. 97/98, p. 41-53, doi:10.1016/0048-9697(90)90229-N.

Pereira, W.E., Rostad, C.E., and Leiker, T.J., 1989,

Preliminary assessment of the fate and transport of synthetic organic agrochemicals in the lower Mississippi River and its tributaries, in Mallard, G.E., and Ragone, S.E., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Phoenix, Arizona, September 26-30, 1988: U.S. Geological Survey Water-Resources Investigations Report 88-4220, p. 453-464.

Petty, J.D., Huckins, J.N., Alvarez, D.A., Brumbaugh, W.G., Cranor, W.L., Gale, R.W., Rastall, A.C., Jones-Lepp, T.L., Leiker, T.J., Rostad, C.E., and Furlong, E.T., 2004,

A holistic passive integrated sampling approach for assessing the presence and potential impacts of waterborne environmental contaminants: Chemosphere, v. 54, no. 6, p. 695-705, doi:10.1016/j.chemosphere.2003.08.015.

Plumlee, G.S., Meeker, G.P., Lovelace, J.K., Rosenbauer, R., Lamothe, P.J., Furlong, E.T., and Demas, C.R., 2006,

USGS environmental characterization of flood sediments left in the New Orleans area after Hurricanes Katrina and Rita, 2005--Progress report: U.S. Geological Survey Open-File Report 2006-1023, 74 p.

Pomes, M.L., Thurman, E.M., Aga, D.S., and Goolsby, D.A., 1998,

Evaluation of microtiter-plate enzyme-linked immunosorbent assay for the analysis of triazine and chloroacetanilide herbicides in rainfall: Environmental Science and Technology, v. 32, no. 1, p. 163-168, doi:10.1021/es970462l.

Pomes, M.L., Thurman, E.M., and Goolsby, D.A., 1996,

An evaluation of a microtiter-plate enzyme-linked immunosorbent assay method for the analysis of triazine and chloroacetanilide herbicides in storm runoff samples, in Van Emon, J.M., Gerlach, C.L., and Johnson, J.C., eds., Environmental immunochemical methods: Washington, D.C., American Chemical Society ACS Symposium Series 646, p. 170-182.

Ragone, S.W., Burkart, M.R., Thurman, E.M., and Perry, C.A., 1989,

Herbicides in ground and surface water in the Midcontintental United States--A research plan, in Annual meeting of the Agricultural Research Institute--Emerging priorities for agriculutral research in the 1990's, Washington, D.C., October 12-14, 1988: p. 55-67.

Rebich, R.A., Coupe, R.H., and Thurman, E.M., 2004,

Herbicide concentrations in the Mississippi River Basin--the importance of chloroacetanilide herbicide degradates: The Science of the Total Environment, v. 321, no. 1-3, p. 189-199, doi:10.1016/j.scitotenv.2003.09.006.

Rostad, C.E., Bishop, L.M., Ellis, G.S., Leiker, T.J., Monsterleet, S.G., and Pereira, W.E., 1995,

Polychlorinated biphenyls and other synthetic organic contaminants associated with sediments and fish in the Mississippi River, in Meade, R.H., ed., Contaminants in the Mississippi River, 1987-92: U.S. Geological Survey Circular 1133, p. 102-113.

Sando, S.K., Furlong, E.T., Gray, J.L., Meyer, M.T., and Bartholomay, R.C., 2005,

Occurrence of organic wastewater compounds in wastewater effluent and the Big Sioux River in the Upper Big Sioux River Basin, South Dakota, 2003-2004: U.S. Geological Survey Scientific Investigations Report 2005-5249, 117 p.

Sandstrom, M.W., Kolpin, D.W., Thurman, E.M., and Zaugg, S.D., 2005,

Widespread detection of N,N-diethyl-m-toluamide in U.S. streams--Comparison with concentrations of pesticides, personal care products, and other organic wastewater compounds: Environmental Toxicology and Chemistry, v. 24, no. 5, p. 1029-1034, doi:10.1897/04-297R.1.

Scribner, E.A., Battaglin, W.A., Dietze, J.E., and Thurman, E.M., 2003,

Reconnaissance data for glyphosate, other selected herbicides, their degradation products, and antibiotics in 51 streams in nine Midwestern States, 2002: U.S. Geological Survey Open-File Report 03-217, 101 p.

Scribner, E.A., Battaglin, W.A., Gilliom, R.J., and Meyer, M.T., 2007,

Concentrations of glyphosate, its degradation product, aminomethylphosphonic acid, and glufosinate in ground- and surface-water, rainfall, and soil samples collected in the United States, 2001-06: U.S. Geological Survey Scientific Investigations Report 2007-5122, 112 p.

Scribner, E.A., Battaglin, W.A., Goolsby, D.A., and Thurman, E.M., 2000,

Changes in herbicide concentrations in Midwestern streams in relation to changes in use, 1989-1998: The Science of the Total Environment, v. 248, no. 2-3, p. 255-263, doi:10.1016/S0048-9697(99)00547-1.

Scribner, E.A., Battaglin, W.A., Goolsby, D.A., and Thurman, E.M., 1999,

Changes in herbicide concentrations in midwestern streams in relation to changes in use, 1989-98, 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. 313-321.

Scribner, E.A., Goolsby, D.A., Battaglin, W.A., Meyer, M.T., and Thurman, E.M., 2006,

Concentrations of selected herbicides, herbicide degradation products, and nutrients in the lower Mississippi river, Louisiana, April 1991 through December 2003: U.S. Geological Survey Data Series 165, 84 p.

Scribner, E.A., Goolsby, D.A., Thurman, E.M., and Battaglin, W.A., 1998,

A reconnaissance for selected herbicides and nutrients in streams of nine Midwestern States, 1994-95: U.S. Geological Survey Open-File Report 98-181, 44 p.

Scribner, E.A., Goolsby, D.A., Thurman, E.M., Meyer, M.T., and Battaglin, W.A., 1996,

Concentrations of selected herbicides, herbicide metabolites, and nutrients in outflow from selected midwestern reservoirs, April 1992 through September 1993: U.S. Geological Survey Open-File Report 96-393, 128 p.

Scribner, E.A., Goolsby, D.A., Thurman, E.M., Meyer, M.T., and Pomes, M.L., 1994,

Concentrations of selected herbicides, two triazine metabolites, and nutrients in storm runoff from nine stream basins in the midwestern United States, 1990-92: U.S. Geological Survey Open-File Report 94-396, 144 p.

Scribner, E.A., Meyer, M.T., and Kalkhoff, S.J., 2006,

Occurrence of isoxaflutole, acetamide, and triazine herbicides and their degradation products in 10 Iowa rivers draining to the Mississippi and Missouri Rivers, 2004: U.S. Geological Survey Scientific Investigations Report 2006-5169, 84 p.

Scribner, E.A., Orlando, J., Battaglin, W.A., Sandstrom, M.W., Kuivila, K., and Meyer, M.T., 2006,

Results of analysis of the fungicide chlorothalonil, its degradation products, and other selected pesticides at 22 surface-water sites in five southern States, 2003-04: U.S. Geological Survey Open-File Report 2006-1207, 59 p.

Scribner, E.A., Thurman, E.M., and Goolsby, D.A., 1996,

Reconnaissance data for selected herbicides and two atrazine metabolites in surface water of the Midwestern United States--Chemical analysis by immunoassay and gas chromatography/mass spectrometry, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 449-453.

Scribner, E.A., Thurman, E.M., Goolsby, D.A., Meyer, M.T., Battaglin, W.A., and Kolpin, D.W., 2005,

Summary of significant results from studies of triazine herbicides and their degradation products in surface water, ground water, and precipitation in the midwestern United States during the 1990s: U.S. Geological Survey Scientific Investigations Report 2005-5094, 33 p.

Scribner, E.A., Thurman, E.M., Goolsby, D.A., Meyer, M.T., Mills, M.S., and Pomes, M.L., 1993,

Reconnaissance data for selected herbicides, two atrazine metabolites, and nitrate in surface water of the Midwestern United States, 1989-90: U.S. Geological Survey Open-File Report 93-457, 77 p.

Scribner, E.A., Thurman, E.M., and Zimmerman, L.R., 2000,

Analysis of selected herbicide metabolites in surface and ground water of the United States: The Science of the Total Environment, v. 248, no. 2-3, p. 157-167, doi:10.1016/S0048-9697(99)00539-2.

Scribner, E.A., Thurman, E.M., and Zimmerman, L.R., 1999,

Analysis of selected herbicide metabolites in surface and ground water of the United States, in Daniel, B.J., ed., Proceedings of the Twenty-ninth Mississippi Water Resources Conference, Raymond, Mississippi, April 7-8, 1999: Mississippi Water Resources Research Institute, p. 110-119.

Simon, N.S., 2005,

Loosely bound oxytetracycline in riverine sediments from two tributaries of the Chesapeake Bay: Environmental Science and Technology, v. 39, no. 10, p. 3480-3487, doi:10.1021/es049039k.

Sprague, L.A., and Battaglin, W.A., 2005,

Wastewater chemicals in Colorado's streams and ground water: U.S. Geological Survey Fact Sheet 2004-3127, 4 p.

Stamer, J.K., Battaglin, W.A., and Goolsby, D.A., 1998,

Herbicides in Midwestern reservoir outflows, 1992-93: U.S. Geological Survey Fact Sheet FS-134-98, 4 p.

Stamer, J.K., Goolsby, D.A., and Thurman, E.M., 1998,

Herbicides in rain fall across the Midwestern and Northeastern United States, 1990-91: U.S. Geological Survey Fact Sheet FS-181-97, 4 p.

Steinheimer, T.R., Pfeiffer, R.L., Scoggin, K.D., and Battaglin, W.A., 2000,

Reconnaissance survey of sulfonamide, sulfonylurea and imidazolinone herbicides in surface streams and groundwater of the Midwestern United States, in Steinheimer, T.R., Ross, L.J., and Spittler, T.D., eds., Agrochemical Fate and Movement--Perspective and Scale of Study: American Chemical Society Symposium series 751, p. 248-271.

Stullken, L.E., Stamer, J.K., and Carr, J.E., 1987,

Reconnaissance of water quality in the High Plains aquifer beneath agricultural lands, south-central Kansas: U.S. Geological Survey Water-Resources Investigations Report 87-4003, 25 p.

Tauler, R., Bercelo, D., and Thurman, E.M., 2000,

Multivariate correlation between concentrations of selected herbicides and derivatives in outflows from selected U.S. midwestern reservoirs: Environmental Science and Technology, v. 34, no. 16, p. 3307-3314, doi:10.1021/es000884m.

Thurman, E.M., Bastian, K.C., and Mollhagen, T., 2000,

Occurrence of cotton herbicides and insecticides in playa lakes of the High Plains of West Texas: The Science of the Total Environment, v. 248, no. 2-3, p. 189-200, doi:10.1016/S0048-9697(99)00542-2.

Thurman, E.M., Bastian, K.C., and Mollhagen, T., 1999,

Occurrence of cotton herbicides and insecticides in playa lakes of the High Plains of West Texas, 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. 227-236.

Thurman, E.M., and Cromwell, A.E., 2000,

Atmospheric transport, deposition, and fate of triazine herbicides and their metabolites in pristine areas at Isle Royale National Park: Environmental Science and Technology, v. 34, no. 15, p. 3079-3085, doi:10.1021/es000995l.

Thurman, E.M., Dietze, J.E., and Scribner, E.A., 2002,

Occurrence of antibiotics in water from fish hatcheries: U.S. Geological Survey Fact Sheet 120-02, 4 p.

Thurman, E.M., and Fallon, J.D., 1997,

The deethylatrazine/atrazine ratio as an indicator of the onset of the spring flush of herbicides into surface water of the midwestern United States: International Journal of Environmental Analytical Chemistry, v. 65, p. 203-214.

Thurman, E.M., Goolsby, D.A., Aga, D.S., Pomes, M.L., and Meyer, M.T., 1996,

Occurrence of alachlor and its sulfonated metabolite in rivers and reservoirs of the midwestern U.S.--The importance of sulfonation in the transport of chloroacetanilide herbicides: Environmental Science and Technology, v. 30, no. 2, p. 569-574, doi:10.1021/es950341q.

Thurman, E.M., Goolsby, D.A., Meyer, M.T., and Kolpin, D.W., 1991,

Herbicides in surface waters of the Midwestern United States--The effect of spring flush: Environmental Science and Technology, v. 25, no. 10, p. 1794-1796, doi:10.1021/es00022a018.

Thurman, E.M., Goolsby, D.A., Meyer, M.T., Mills, M.S., Pomes, M.L., and Kolpin, D.W., 1992,

A reconnaissance study of herbicides and their metabolites in surface water of the Midwestern United States using immunoassay and gas chromatography/mass spectrometry: Environmental Science and Technology, v. 26, no. 12, p. 2440-2447, doi:10.1021/es00036a016.

Thurman, E.M., Kolpin, D.W., Goolsby, D.A., and Meyer, M.T., 1998,

Source and transport of desethylatrazine and desisopropylatrazine to groundwater of the midwestern United States, in Ballantine, L.G., McFarland, J.E., and Hackett, D.S., eds., Triazine Herbicides Risk Assessment: Washington, D.C., American Chemical Society ACS Symposium Series 683, p. 189-207.

Thurman, E.M., and Meyer, M.T., 1996,

Herbicide metabolites in surface water and groundwater--Introduction and overview, in Meyer, M.T., and Thurman, E.M., eds., Herbicide metabolites in surface water and groundwater: Washington, D.C., American Chemical Society ACS Symposium Series 630, p. 1-15.

Thurman, E.M., Meyer, M.T., Mills, M.S., Zimmerman, L.R., Perry, C.A., and Goolsby, D.A., 1994,

Formation and transport of deethylatrazine and deisopropylatrazine in surface water: Environmental Science and Technology, v. 28, no. 13, p. 2267-2277, doi:10.1021/es00062a010.

Thurman, E.M., Mills, M.S., and Meyer, M.T., 1996,

Chemistry, degradation, and transport of triazine herbicide metabolites in surface water, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 455-462.

Thurman, E.M., Zimmerman, L.R., Aga, D.S., and Gilliom, R.J., 2001,

Regional water-quality analysis of 2,4-D and dicamba in river water using gas chromatography - isotope dilution mass spectrometry: International Journal of Environmental Analytical Chemistry, v. 79, no. 3, p. 185-198.

Thurman, E.M., Zimmerman, L.R., Scribner, E.A., and Coupe, R.H., Jr., 1998,

Occurrence of cotton pesticides in surface water of the Mississippi Embayment: U.S. Geological Survey Fact Sheet FS-022-98, 4 p.

Verplanck, P.L., McCleskey, R.B., and Roth, D.A., 2003,

Inorganic water chemistry of the Boulder Creek watershed, Colorado, during high-flow and low-flow conditions, 2000 (Chapter 4), in Murphy, S.F., Verplanck, P.L., and Barber, L.B., eds., Comprehensive water quality of the Boulder Creek watershed, Colorado, during high-flow and low-flow conditions, 2000: U.S. Geological Survey Water-Resources Investigations Report 03-4045, p. 71-102.

Versteeg, D.J., Alder, A.C., Cunningham, V.L., Kolpin, D.W., Murray-Smith, R., and Ternes, T., 2005,

Environmental exposure modeling and monitoring of human pharmaceutical concentrations in the environment, in Williams, R.T., ed., Human pharmaceuticals - assessing the impacts on aquatic ecosystems: SETAC Press, p. 71-110, ISBN:978-1-880611-82-1.

Verstraeten, I., Meyer, M.T., Skopp, J., Speth, T., Obrist, J.G., and Vogel, J.R., 2003,

Sources, temporal variations, and fate and transport of selected endocrine disruption compounds and pharmaceuticals, Nebraska, USA, in Proceedings of the 3rd International Conference on Pharmaceuticals and Endocrine Disrupting Chemicals in Water, Minneapolis, Minnesota, March 19-21, 2003: National Ground Water Association, p. 292, CD-ROM.

Verstraeten, I.M., Carr, J.D., Steele, G.V., Thurman, E.M., Bastian, K.C., and Dormedy, D.F., 1999,

Surface water/ground water interaction--Herbicide transport into municipal collector wells: Journal of Environmental Quality, v. 28, no. 5, p. 1396-1405.

Verstraeten, I.M., Lewis, D.T., McCallister, D.L., Parkhurst, A., and Thurman, E.M., 1996,

Relation of landscape position and irrigation to concentrations of alachlor, atrazine, and selected degradates in regolith in northeastern Nebraska, in Meyer, M.T., and Thurman, E.M., eds., Herbicide metabolites in surface water and groundwater: Washington, D.C., American Chemical Society ACS Symposium Series 630, p. 178-197.

Verstraeten, I.M., McGuire, V.L., and Battaglin, W.A., 1996,

Use of 2D and 3D GIS in well selection and interpretation of nitrate data, central Nebraska, USA, in Kovar, K., and Nachtnebel, H., eds., Application of Geographic Information Systems in Hydrology and Water Resources Management--Proceedings of HydroGIS'96 meeting, Vienna, Austria, April 1996: International Association of Hydrological Sciences Publication No. 235, p. 585-591.

Vogel, J.R., Barber, L.B., Furlong, E.T., Coplen, T.B., Verstraeten, I.M., and Meyer, M.T., 2005,

Occurrence of selected pharmaceutical and non-pharmaceutical compounds and stable hydrogen and oxygen isotope ratios in a riverbank filtration study, Platte River, Nebraska, 2002-2005, volume 2: U.S. Geological Survey Data Series 141, 92 p.

Vogel, J.R., Harris, S.I., Coplen, T.B., Rice, E.W., and Verstraeten, I.M., 2005,

Microbe concentrations, laser particle counts, and stable hydrogen and oxygen isotope ratios in samples from a riverbank filtration study, Platte River, Nebraska, 2002-2004: U.S. Geological Survey Data Series 133, 70 p.

Vogel, J.R., Verstraeten, I.M., Coplen, T.B., Furlong, E.T., Meyer, M.T., and Barber, L.B., 2005,

Occurrence of selected pharmaceutical and non-pharmaceutical compounds, and stable hydrogen and oxygen isotope ratios, in a riverbank filtration study, Platte River, Nebraska, 2001-2003, Volume 1: U.S. Geological Survey Data Series 117, 64 p.

Wentz, D.A., Bonn, B.A., Carpenter, K.D., Hinkle, S.R., Janet, M.L., Rinella, F.A., Uhrich, M.A., Waite, L.R., Laenen, A., and Bencala, K.E., 1998,

Water quality in the Willamette Basin, Oregon, 1991-95: U.S. Geological Survey Circular 1161, 34 p.

Wilde, F.D., Britton, L.J., Miller, C.V., and Kolpin, D.W., 2000,

Effects of animal feeding operations on water resources and the environment--Proceedings of the technical meeting, Fort Collins, Colorado, August 30-September 1, 1999: U.S. Geological Survey Open-File Report 00-204, 107 p.

Wilkison, D.H., Armstrong, D.J., Brown, R.E., Poulton, B.C., Cahill, J.D., and Zaugg, S.D., 2005,

Water-quality and biologic data for the Blue River Basin, Kansas City metropolitan area, Missouri and Kansas, October 2000 to October 2004: U.S. Geological Survey Data Series 127, 166 p.

Wilkison, D.H., Armstrong, D.J., Norman, R.D., Polton, B.C., Furlong, E.T., and Zaugg, S.D., 2006,

Water quality in the Blue River Basin, Kansas City metropolitan area, Missouri and Kansas, July 1998 to October 2004: U.S. Geological Survey Fact Sheet 2006-3103, 6 p.

Wilkison, D.H., Armstrong, D.J., Norman, R.D., Poulton, B.C., Furlong, E.T., and Zaugg, S.D., 2006,

Water quality in the Blue River Basin, Kansas City metropolitan area, Missouri and Kansas, July 1998 to October 2004: U.S. Geological Survey Scientific Investigations Report 2006-5147, 170 p.

Wilkison, D.H., Cahill, J.D., Zaugg, S.D., Poulton, B.C., and Armstrong, D.J., 2004,

Source and fate of pharmaceuticals and selected organic wastewater compounds in the Blue River Basin, metropolitan Kansas City, USA, in Proceedings of the 4th International Conference on Pharmaceuticals and Endocrine Disrupting Chemicals in Water, Minneapolis, Minnesota, October 13-15, 2004: National Ground Water Association, p. 36-37, CD-ROM.

Williams, J.D., Kolpin, D.W., and eds., 2003,

Agricultural hydrology and water quality, in Proceedings of the AWRA 2003 Spring Specialty Conference: Kansas City, MO, American Water Resources Association, p. CD-ROM.

Worrall, F., 2001,

A molecular topology approach to predicting pesticide pollution of groundwater: Environmental Science and Technology, v. 35, no. 11, p. 2282-2287, doi:10.1021/es001593g.

Worrall, F., Besien, T., and Kolpin, D.W., 2002,

Groundwater vulnerability--Interactions of chemical and site properties: The Science of the Total Environment, v. 299, p. 131-143, doi:10.1016/S0048-9697(02)00270-X.

Worrall, F., and Kolpin, D.W., 2004,

Aquifer vulnerability to pesticide pollution - combining soil, land-use and aquifer properties with molecular descriptors: Journal of Hydrology, v. 293, no. 1-4, p. 191-204, doi:10.1016/j.jhydrol.2004.01.013.

Worrall, F., and Kolpin, D.W., 2003,

Direct assessment of groundwater vulnerability from single observations of multiple contaminants: Water Resources Research, v. 39, no. 12, p. 1345-1352, 2002WR001212, doi:10.1029/2002WR001212.

Writer, J.H., Leenheer, J.A., Barber, L.B., Amy, G.L., and Chapra, S.C., 1995,

Sewage contamination in the Upper Mississippi River as measured by the fecal sterol, coprostanol: Water Research, v. 29, no. 6, p. 1427-1436, doi:10.1016/0043-1354(94)00304-P.

Yen, S., Liu, S., and Kolpin, D.W., 1996,

Analysis of nitrate in near-surface aquifers in the midcontinental United States--An application of the inverse hyperbolic sine Tobit model: Water Resources Research, v. 32, no. 10, p. 3003-3011, 96WR02102, doi:10.1029/96WR02102.

There are 305 publications in this section of the bibliography. The above list is sorted by author. The Toxics Bibliographic Data Base was last updated on 5/15/08.

| Sorted by Author | Sort by Year | Sort by Title | Sort by Publication Type | Only On-Line Reports | Search | Contents |