References Cited


Barlow, J.R., and Coupe, R.H., 2009, Use of heat to estimate streambed fluxes during extreme hydrologic events: Water Resources Research, v. 45, W01403, doi:10.1029/2007WR006121, accessed October 24, 2011, at http://www.agu.org/pubs/crossref/2009/2007WR006121.shtml.


Becher, K.D., Kalkhoff, S.J., Schnoebelen, D.J., Barnes, K.K., and Miller, V.E., 2001, Water-quality assessment of the Eastern Iowa Basins—Nitrogen, phosphorus, suspended sediment, and organic carbon in surface water, 1996-98: U.S. Geological Survey Water-Resources Investigations Report 01-4175, 56 p. (Also available at http://pubs.usgs.gov/wri/wri014175/.) 


Buchmiller, R.C., and Eash, D.A., 2010, Floods of May and June 2008 in Iowa: U.S. Geological Survey Open-File Report 2010–1096, 10 p. (Also available at http://pubs.usgs.gov/of/2010/1096/.)


Capel, P.D., McCarthy, K.A., and Barbash, J.E., 2008, National, holistic, watershed-scale approach to understand the sources, transport, and fate of agricultural chemicals: Journal of Environmental Quality, v. 37, no. 3, p. 983–993. 


Coupe, R.H., 2000, Occurrence of pesticides in five rivers of the Mississippi Embayment Study Unit, 1996–98: U.S. Geological Survey Water-Resources Investigations Report 99-4159, 55 p. (Also available at http://pubs.er.usgs.gov/publication/wri994159.)


Coupe, R.H., 2002, Nitrogen and phosphorus concentrations and fluxes of streams in the Mississippi Embayment Study Unit, 1996–98: U.S. Geological Survey Water-Resources Investigations Report 01-4024, 65 p. 


Coupe, R.H., 2007, Use of a watershed model to characterize the fate and transport of fluometuron, a soil-applied cotton herbicide, in surface water: Intern Journal of Environmental and Analytical Chemistry, v. 87, no. 13, p. 883-896. 


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. 


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. 


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 and Analytical Chemistry, v. 85, no. 15, p. 1127–1140. 


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. 


Kalkhoff, S.J., Barnes, K.K., Becher, K.D., Savoca, M.E., Schnoebelen, D.J., Sadorf, E.M., Porter, S.D., and Sullivan, D.J., 2001, Water quality in the Eastern Iowa basins, Iowa and Minnesota, 1996-98: U.S. Geological Survey Circular 1210, 37 p. (Also available at http://pubs.usgs.gov/circ/circ1210/.)


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.


Kleiss, B.A., Coupe, R.H., Gonthier, G.J., and Justus, B.G., 2000, Water quality in the Mississippi Embayment, Mississippi, Louisiana, Arkansas, Missouri, Tennessee, and Kentucky, 1995-98: U.S. Geological Survey Circular 1208, 36 p. (Also available at http://pubs.usgs.gov/circ/circ1208/.)


Maupin, M.A., and Barber, N.L., 2005, Estimated withdrawals from the principal aquifers in the United States, 2000: U.S. Geological Survey Circular 1279, 46 p. (Also available at http://pubs.usgs.gov/circ/2005/1279/.)


McCarthy, K.A., Lampe, D.C., and Capel, P.D., 2011, Discrete and continuous water-quality data and hydrologic parameters from seven agricultural watersheds in the United States, 2002-09: U.S. Geological Survey Data Series 603, 10 p. (Also available at http://pubs.usgs.gov/ds/603/.)


Mississippi State University Extension Service, 2011, Stoneville station, database: accessed December 16, 2011, at http://ext.msstate.edu/anr/drec/weather.cgi.


National Oceanic and Atmospheric Administration, 2002a, Divisional normals and standard deviations of temperature, precipitation, and heating and cooling degree days 1971–2000—Section 1—Temperature: National Oceanic and Atmospheric Administration Climatography of the United States, no. 85, 69 p. accessed October 24, 2011, at http://cdo.ncdc.noaa.gov/climatenormals/clim85/CLIM85_TEMP01.pdf.


National Oceanic and Atmospheric Administration, 2002b, Divisional Normals and Standard Deviations of Temperature, Precipitation, and Heating and Cooling Degree Days 1971–2000—Section 2—Precipitation: National Oceanic and Atmospheric Administration Climatography of the United States, no. 85, 71 p., accessed October 24, 2011, at http://cdo.ncdc.noaa.gov/climatenormals/clim85/CLIM85_PRCP02.pdf.


Olcott, P.G., 1992, Ground water atlas of the United States, Iowa, Michigan, Minnesota, Wisconsin: U.S. Geological Survey Hydrologic Investigations Atlas 730-J, 31 p., accessed October 24, 2011, at http://mi.water.usgs.gov/pubs/HA/HA730-J/.


Porter, S.D., Harris, M.A., and Kalkhoff, S.J., 2001, Influence of natural factors on the quality of Midwestern streams and rivers: U.S. Geological Survey Water-Resources Investigations Report 00-4288, 13 p. (Also available at http://pubs.usgs.gov/wri/wri004288/.)


Quade, D.J., and Giglierona, J.D., 2006, Surficial geologic map of the Des Moines Lobe of Iowa Phase 8—Hardin County: Iowa Geological Survey Open-File Map OFM-06-6, 1 sheet.


Quade, D.J., Giglierona, J.D., Bettis, E.A., and Wisner, R.J., 2000, Surficial geologic map of the Des Moines Lobe of Iowa Hamilton and Webster Counties: Iowa Geological Survey Bureau Open-File Map 2000-1, 1 sheet.


Runner, M.S., Turnipseed, D.P., and Coupe, R.H., 2002, Stream flow and nutrient data for the Yazoo River below Steele Bayou near Long Lake, Mississippi, 1996-2000: U.S. Geological Survey Water-Resources Investigations Report 02-4215, 35 p. (Also available at http://ms.water.usgs.gov/publications/WRIR_02_4215.html.)


Schnoebelen, D.J., Kalkhoff, S.J., Becher, K.D., and Thurman, E.M., 2003, Water-quality assessment of the Eastern Iowa Basins—Selected pesticides and pesticide degradates in steams, 1996-98: U.S. Geological Survey Water-Resources Investigations Report 03-4075, 62 p. (Also available at http://pubs.usgs.gov/wri/2003/wri034075/.)


Taylor, R.E., and Thompson, F.H., 1971, Water for industry and agriculture in Washington County, Mississippi. Prepared by USGS Water Resources Division, published by Delta Council, Stoneville, Mississippi, 64 p. 


Tomer, M.D., Moorman, T.B., and Rossi, C.G., 2008a, Assessment of the Iowa River’s South Fork watershed—Part 1, Water quality: Journal of Soil and Water Conservation, v. 63, no. 6, p. 360–370.


Tomer, M.D., Moorman, T.B., James, D.E., Hadish, G., and Rossi, C.G., 2008b, Assessment of the Iowa River’s South Fork watershed—Part 2, Conservation practices: Journal of Soil and Water Conservation, v. 63, no. 6, p. 371–379.


U.S. Census Bureau, 2000a, Census 2000 Block Maps: U.S. Census Bureau, accessed October 24, 2011, at http://ftp2.census.gov/geo/maps/blk2000/st19_Iowa/.


U.S. Census Bureau, 2000b, Census 2000 Data for the State of Iowa: U.S. Census Bureau, accessed October 24, 2011, at http://www.census.gov/census2000/states/ia.html.


U.S. Department of Agriculture, 2009, The Census of Agriculture: National Agricultural Statistics Service, accessed October 24, 2011, at http://www.agcensus.usda.gov/index.asp.


U.S. Geological Survey, 2001, U.S. Geological Survey National Water Information System (NWISWeb): U.S. Geological Survey, accessed August 31, 2010, at http://waterdata.usgs.gov/nwis/sw. 


U.S. Geological Survey, 2008, Water-resources data for the United States, water year 2007: U.S. Geological Survey Water Data Report WDR–US–2007, accessed October 24, 2011, at http://wdr.water.usgs.gov/.


U.S. Geological Survey, 2009, Water-resources data for the United States, water year 2008: U.S. Geological Survey Water-Data Report WDR–US–2008, accessed October 24, 2011, at http://wdr.water.usgs.gov/.


U.S. Geological Survey, 2010, Water-resources data for the United States, water year 2009: U.S. Geological Survey Water Data Report WDR–US–2008, accessed October 24, 2011, at http://wdr.water.usgs.gov/.


U.S. Geological Survey, 2011, National Water-Quality Assessment Program publications: website, accessed December 16, 2011, at http://water.usgs.gov/nawqa/bib/.


Welch, H.L., Green, C.T., and Coupe, R.H., 2011, The fate and transport of nitrate in shallow groundwater in northwestern Mississippi, USA: Hydrogeology Journal, 14 p., online in advance of print, doi: 10.1007/s10040-011-0748-8, accessed October 24, 2011, at http://www.springerlink.com/content/235p7gqmg2u2q556/.


First posted February 16, 2012