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Groundwater (back to categories)

Norman, J.E., Toccalino, P.L., and Scott, J.C., 2012, Chemical Mixtures in Water from Public-Supply Wells in the U.S.--Occurrence, Composition, and Potential Toxicity, National Water Quality Monitoring Council's Eighth National Monitoring Conference, Portland, OR, April 30-May 4, 2012. Session G5, p. 74. Available Online

Stackelberg, P.E., Barbash, J.E., Gilliom, R.J., Stone, W.W., and Wolock, D.M., 2012, Regression models for estimating concentrations of atrazine plus deethylatrazine in shallow groundwater in agricultural areas of the United States. Journal of Environmental Quality 41(2). Available Online

Toccalino, P.L. and J.A. Hopple, 2010, Quality of water from selected public-supply wells in the United States. Seventh National Monitoring Conference, Denver, CO, April 25-29, 2010. Session L6, p. 142. Available Online

Toccalino, P.L. and J.A. Hopple, 2010, Contaminants in groundwater sources used for public supply. Ground Water Protection Council annual forum, Pittsburgh, PA, September 26-29, 2010. Presentation at URL http://www.gwpc.org/sites/default/files/event-sessions/33Toccalino_Patty.pdf

Toccalino, P.L. and J.E. Norman, 2010, Contaminant mixtures in source water from public-supply wells in the United States. Society for Risk Analysis annual meeting, Salt Lake City, UT, December 5-8, 2010. Abstract T2-C2. Available Online

Toccalino, P.L., Norman, J.E., and Hitt, K.J., 2010, Quality of source water from public-supply wells in the United States, 1993-2007: U.S. Geological Survey Scientific Investigations Report 2010-5024, 206 p. Available Online

Toccalino, P.L., and Hopple, J.A., 2010, The quality of our Nation's waters - Quality of water from public-supply wells in the United States, 1993-2007- Overview of major findings: U.S. Geological Survey Circular 1346, 58 p. Available Online

Barbash, J.E., 2008, "Factors Controlling Groundwater Quality Across the United States - New Contributions from the National Water-Quality Assessment (NAWQA) Program." Presented at the Annual Meeting of the Geological Society of America, Houston, TX, October 5-9, 2008. Available Online

Stackelberg, P.E., Gilliom, R.J., Barbash, J.E., and Voss, F.D., 2008, "Regression Methods for Estimating the Occurrence of Atrazine in Shallow Ground Water beneath Agricultural Areas of the United States." Presented at the Annual Meeting of the Geological Society of America, Houston, TX, October 5-9, 2008. Available Online

Steele, G.V., Johnson, H.M., Sandstrom, M.W., Capel, P.D., and Barbash, J.E., 2008, Occurrence and Fate of Pesticides in Four Contrasting Ground-Water Flow Systems Agricultural Settings in the United States, J. Environ. Qual. 37(3): 1116-1132

Webb, R.M.T., Wieczorek, M.E., Nolan, B.T., Hancock, T.C., Sandstrom, M.W., Barbash, J.E., Bayless, E.R., Healy, R.W., and Linard, J.I., 2008, Variations in pesticide leaching related to land use and unsaturated zone thickness in an agricultural watershed in Maryland, J. Environ. Qual. 37(3): 1145-1157

Bayless, E.R., Capel, P.D. and Barbash, J.E., Webb, R.M.T., Hancock, T.C., and Lampe, D.C., 2008, Simulated Fate and Transport of Metolachlor in the Unsaturated Zone, Maryland, USA, J. Environ. Qual. 37(3): 1064-1072

Hancock, T.C., Sandstrom, M.W., Vogel, J.R., Webb, R.M.T., Bayless, E.R. and Barbash, J.E., 2008, Transport and Fate of Pesticides in the Unsaturated Zone within Five Agricultural Settings of the United States, J. Environ. Qual. 37(3): 1086-1100

Toccalino, P.L. and Norman, J.E., 2008, National reconnaissance of the chemical quality of water from public-supply wells. Proceedings of the annual Society for Risk Analysis Meeting, Boston, MA. December 7-10, 2008. Paper M4-F.1, p. 142. Available Online

Wilson, J.T., Baker, N.T., Moran, M.J., Crawford, C.G., Nowell, L.H., Toccalino, P.L., and Wilber, W.G., 2008, Methods and sources of data used to develop selected water-quality indicators for streams and ground water for the 2007 edition of The State of the Nation's Ecosystems report with comparisons to the 2002 edition: U.S. Geological Survey Open-File Report 2008-1110, 62 p. Available Online

Tesoriero, A.J., Saad, D.A., Burow, K.R., Frick, E.A., Puckett, L.J. and Barbash, J.E., 2007, Linking ground-water age and chemistry data along flow paths: Implications for trends and transformations of nitrate and pesticides. J.Cont.Hydrol. 94: 139-155 Available Online

Metz, P.A., Delzer, G.C., Berndt, M.P., Crandall, C.A., and Toccalino, P.L., 2007, Anthropogenic organic compounds in ground water and finished water of community water systems in the northern Tampa Bay area, Florida, 2002-04: U.S. Geological Survey Scientific Investigations Report 2006-5267, 48 p. Available Online

Stackelberg, P., Gilliom, R., Wolock, D., and Nakagaki, N., 2007, Modeling atrazine occurrence in shallow ground water in agricultural areas of the United States. American Chemical Society, 233rd National Meeting, March 25-29, 2007, Chicago, IL., Available Online

Barbash, J.E., and Voss, F.D., 2007, Use of a geographic information system with process-based simulation modeling to predict atrazine concentrations in shallow ground water across the United States: Simulation approach and testing against nationwide observations: American Chemical Society national meeting, Chicago, IL, March 27, 2007 Available Online

Stackelberg, P.E., Gilliom, R.J., Wolock, D.M., and Nakagaki, N., 2006, Predicting the occurrence of atrazine in shallow ground water beneath agricultural areas of the United States. Geological Society of America Annual Meeting, October 22-25 2006, Philadelphia, PA. Available Online

Stackelberg, P.E., Gilliom, R.J., Wolock, D.M., and Hitt, K.J., 2006. Development and application of a regression equation for estimating the occurrence of atrazine in shallow ground water beneath agricultural areas of the United States. U.S. Geological Survey, Scientific Investigations Report 2005-5287, 12 p. Available Online

Stackelberg, P.E., Gilliom, R.J., Wolock, D.M., and Hitt, K.J., 2006, Development and Application of a Regression Model for Estimating the Occurrence of Atrazine in Shallow Ground Water beneath Agricultural Areas of the United States. National Water Quality Monitoring Council, 206 National Monitoring Conference, May 7-11 2006, San Jose, CA. Available Online

Barbash, J.E., 2006, Proposed tools and approach for ground-water vulnerability assessment (GWAVA) using a geographic information system and simulation modeling (Invited presentation, delivered at the National Water-Quality Monitoring Council's 5th National Monitoring Conference, San Jose, CA, May 8, 2006). Available Online

Nolan, B.T., Bayless, E.R., Green, C.T., Garg, S., Voss, F.D., Lampe, D.C., Barbash, J.E., Capel, P.D. and Bekins, B.A., 2005, Evaluation of unsaturated-zone solute-transport models for studies of agricultural chemicals: U.S.Geological Survey Open-File Report 2005-1196, 16 p. Available Online

Toccalino, P.L., Norman, J.E., Phillips, R.H., Kauffman, L.J., Stackelberg, P.E., Nowell, L.H., Krietzman, S.J., and Post. G.B., 2004, Application of Health-Based Screening Levels to Ground-Water Quality Data in a State-Scale Pilot Effort: U.S. Geological Survey Scientific Investigations Report SIR 2004-5174, 64 p. Available Online

Kolpin, D.W., Barbash, J.E. and Gilliom, R.J. 2002. Atrazine and metolachlor occurrence in shallow groundwater of the United States, 1993-95: Relations to explanatory factors. J.Am.Wat.Resour.Assn. 38(1): 301-311. Available Online

Barbash, J.E., Thelin, G.P., Kolpin, D.W., and Gilliom, R.J., 2001, Major herbicides in ground water: results from the National Water-Quality Assessment: Journal of Environmental Quality, v. 30, no. 3, pp. 831-845. Available Online

Kolpin, D.W., Barbash, J.E. and Gilliom, R.J. 2000. Pesticides in ground water of the United States, 1992-1996. Ground Water, 38(6): 858-863. Available Online

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, n. 6, p. 1908-1915. Available Online

Burkart, M.R., Kolpin, D.W., and James, D.E., 1999, Assessing groundwater vulnerability to agrichemical contamination in the Midwest US: Water Science & Technology, v. 39, n. 3, p. 103-112. Available Online

Barbash, J.E., Thelin, G.P., Kolpin, D.W., and Gilliom, R.J., 1999, Distribution of Major Herbicides in Ground Water of the United States U.S. Geological Survey Water-Resources Investigations Report 98-4245. Available Online

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

Kolpin, D.W., Barbash, J.E., and Gilliom, R.J., 1998, Occurrence of Pesticides in Shallow Groundwater of the United States: Initial Results from the National Water-Quality Assessment Program: Environmental Science & Technology, v. 32, n. 5, p. 558-566 . Adapted from original article published in the Environmental Science & Technology, v. 32, 1998. Available Online

Liu, S., Lu, J., Kolpin, D.W., and Meeker, W.Q., 1997, Analysis of Environmental Data with Censored Observations: Environmental Science & Technology, v. 31, n. 12, p. 3358-3362. Available Online

Kolpin, D.W., Squillace, P.J., Zogorski, J.S., and Barbash, J.E., 1997, Pesticides and volatile organic compounds in shallow urban groundwater of the United States, in Groundwater in the Urban Environment (Chilton, J., ed.) The Netherlands: A.A. Balkema, p. 469-474. Available Online

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, n. 4, p. 679-688. Available Online

Kolpin, 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, n. 4, p. 1007-1017. Available Online

Barbash, J.E. and Resek, E.A., 1996, Pesticides in Ground Water: Distribution, Trends, and Governing Factors. Chelsea, Michigan: Ann Arbor Press, Pesticides in the Hydrologic System series, v. 2, 590 p.

Barbash, J.E., 1995, Pesticides in Ground Water: Current Understanding of Distribution and Major Influences. U.S. Geological Survey Fact Sheet FS-244-95, 4 p. Available Online

Barbash, J.E., 1995, Pesticides in Ground Water: An Overview of Current Understanding [abs.]: American Geophysical Union Spring Meeting, The Rubin Symposium on Soil Science, Solute Transport, and National-Scale Water Quality Assessments, 1 June 1995, Baltimore, Maryland, EOS, v. 76, no. 17, p. S142. Available Online

Barbash, J.E., 1994, Problems Associated with the Use of Solute-Transport Models and Vulnerability Assessments for Predicting the Behavior of Pesticides in the Subsurface [abs.]: American Chemical Society Abstracts of Papers, 208th National Meeting, Part 1, 22 August 1994, Washington, D.C. Available Online

Capel, P.D., 1993, Organic Chemical Concepts, Chapter 7 in Alley, W.M., ed., Regional ground-water quality: New York, Van Nostrand Reinhold, p. 155-179.

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