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Eberts, Sandra M., Erwin, Martha L., and Hamilton, Pixie A., 2005, Assessing the vulnerability of public-supply wells to contamination from urban, agricultural, and natural sources: U.S. Geological Survey Fact Sheet 2005-3022, 4 p.  Available Online

Stewart, Jana S., 1994, Assessment of alternative methods for stratifying landsat TM data to improve land cover classification accuracy across areas with physiographic variation: University of Wisconsin-Madison, Master of Science thesis, 159 p. 

Frey, J.W., Baker, N.T., Lydy, M.J., and Stone, W.W., 1996, Assessment of water quality at selected sites in the White River Basin, Indiana, 1993 and 1995 using biological indices: U.S. Geological Survey Fact Sheet FS-209-96, 4 p.  Available Online

Bales, J.D., and Nardi, M.R., 2007, Automated routines for calculating whole-stream metabolism-Theoretical background and user's guide: U.S. Geological Survey Techniques and Methods 4-C2, 33 p.  Available Online

Hopkins, Evelyn H., and Hippe, Daniel J., 1999, Can land-use patterns serve as a predictor of pesticide occurrence within an urban landscape?: in Hatcher, K.J., ed., U.S. Geological Survey reprints from proceedings of the 1999 Georgia Water Resources Conference, March 30-31, 1999 The University of Georgia, Athens, Georgia, p. 180-185. 

Alvarez, D.A., Cranor, W.L., Perkins, S.D., Clark, R.C., and Smith, S.B., 2008, Chemical and toxicologic assessment of organic contaminants in surface water using passive samplers: Journal of Environmental Quality 2008 (37), p. 1024-1033.  doi: 10.2134/jeq2006.0463 Available Online

Dunkle, S.A., Plummer, L.N., Busenberg, E., Phillips, P.J., Denver, J.M., Hamilton, P.A., Michel, R.L., and Coplen, T.B., 1993, Chlorofluoro-carbons (CC13F and CC12F2) as dating tools and hydrologic tracers in shallow groundwater of the Delmarva Peninsula, Atlantic Coastal Plain, United States: Water Resources Research, vol. 29, no. 12, p. 3837-3860.  Available Online

Potapova, M.G., and Charles, D.F., 2005, Choice of substrate in algae-based water-quality assessment: Journal of the North American Benthological Society, vol. 24, no. 2, p. 415-427.  Available Online

Gilliom, Robert J., and Thelin, Gail P., 1997, Classification and mapping of agricultural land for national water-quality assessment: U.S. Geological Survey Circular 1131, 70 p.  Available Online

Qi, Sharon L., Konduris, Alexandria, Litke, David W., and Dupree, Jean, 2002, Classification of irrigated land using satellite imagery--High Plains aquifer, nominal date 1992: U.S. Geological Survey Water-Resources Investigations Report 02-4236, 31 p.  Available Online

Coes, Alissa, Gellenbeck, Dorinda, and Towne, Doug, 1997, Collection and analysis of ground-water samples in the Sierra vista Basin, Arizona, 1996: U.S. Geological Survey Fact Sheet FS-107-97, 2 p.  Available Online

Stewart, Jana S., 1998, Combining satellite data with ancillary data to produce a refined land-use/land-cover map: U.S. Geological Survey Water-Resources Investigations Report 97-4203, 11 p.  Available Online

Lenz, Bernard N., and Miller, Michael A., 1996, Comparison of aquatic macroinvertebrate samples collected using different field methods: U.S. Geological Survey Fact Sheet 216-96, 4 p.  Available Online

Bastian, K.Chad, Thurman, E.M., Kleiss, and Rebich, Richard A., 1998, Comparison of enzyme-linked immunoassay with gas chromatography/mass spectrometry for analysis of the cotton herbicide fluometuron: Proceedings of the 28th Mississippi Water Resources Conference, April 7-8 1998, Raymond, MS, p. 45-55. 

Lydy, M.J., Carter, D.S., and Crawford, C.G., 1996, Comparison of gas chromatography/mass spectrometry and immunoassay techniques on concentrations of atrazine in storm runoff: Archives of Environmental Contamination and Toxicology, vol. 31, no. 3, p. 378-385.  doi: 10.1007/BF00212676 Available Online

Peterson, David A., and Zumberge, Jeremy R., 2006, Comparison of Macroinvertebrate Community Structure between Two Riffle-Based Sampling Protocols in Wyoming, Colorado, and Montana, 2000-2001: U.S. Geological Survey Scientific Investigations Report 2006-5117, 12 p.  Available Online

Lorenz, D.L., Goldstein, R.M., Cowdery, T.K., and Stoner, J.D., 2003, Comparison of two methods for delineating land use near monitoring wells used for assessing quality of shallow ground water: U.S. Geological Survey Water-Resources Investigations Report 03-4067, 13 p.  Available Online

Scott, J.C., 1991, Computer software for converting ground-water and water-quality data from the National Water Information System for use in a geographic information system: U.S. Geological Survey Water-Resources Investigations Report 90-4200, 55 p.  Available Online

Scott, J.C., 1990, Computerized stratified random site-selection approaches for design of a ground-water-quality sampling network: U.S. Geological Survey Water-Resources Investigations Report 90-4101, 109 p.  Available Online

Mahler, B.J., Van Metre, P.C., Wilson, J.T., Guilfoyle, A.L., and Sunvison, M.W., 2006, Concentrations, loads, and yields of particle-associated contaminants in urban creeks, Austin, Texas, 1999-2004: U.S. Geological Survey Scientific Investigations Report 2006-5262, 107 p.  Available Online

Rees, Julie A.H., 1999, Converting contour-line data into data sets for a multilayered aquifer using a geographic information system: U.S. Geological Survey Open-File Report 99-54, 29 p.  Available Online

Bell, R.W., and Williamson, A.K., 2006, Data delivery and mapping over the Web-National Water-Quality Assessment Data Warehouse: U.S. Geological Survey Fact Sheet 2006-3101, 6 p.  Available Online

Chappell, F.H., McMahon, P.B., Dubrovsky, N.M, Fujii, R.F., Oaksford,E.T., and Vroblesky, D.A., 1995, Deducing the distribution of terminal electron-accepting processes in hydrologically diverse groundwater systems: Water Resources Research, vol. 31, no. 2, p. 359-371.  Available Online

Wolock, D.M., Winter, T.C., and McMahon, G., 2004, Delineation and evaluation of hydrologic-landscape regions in the United States using geographic information system tools and multivariate statistical analyses: Environmental Management, vol. 34 (Supplement 1), p. S71-S88.  doi: 10.1007/s00267-003-5077-9 Available Online

Thiros, S.A., Bender, D.A., Mueller, D.K., Rose, D.L., Olsen, L.D., Martin, J.D., Bernard, B., and Zogorski J.S., 2011, Design and evaluation of a field study on the contamination of selected volatile organic compounds and wastewater-indicator compounds in blanks and groundwater samples: U.S. Geological Survey Scientific Investigations Report 2011-5027, 85 p.  Available Online

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