Paul D. Capel Donald A. Goolsby Steven D. Zaugg Mark W. Sandstrom Steven J. Larson 1995 In an intensive subcontimental study of pesticides in surface waters of the United States, concentrations of 26 high-use pesticides were measured at nine sites in the Mississippi River basin from May 1991 through March 1992. Calculated total fluxes were combined with agricultural-use data to estimate the percentage of applied pesticide reaching the mouths of the Mississippi River and six major tributaries. For most pesticides, the riverine flux was less than 2% of the mass applied agriculturally. The insecticide diazinon was detected frequently in rivers draining the three basins with the highest population densities, apparently as a result of urban use. application/pdf 10.1016/0045-6535(95)00176-9 en Elsevier Relations between pesticide use and riverine flux in the Mississippi River Basin article