1. Effects of Sampling Strategies on Estimates of Annual Mean Herbicide Concentrations in Midwestern Rivers
2. T.M. Brody, B.A. Furio, and D.P. Macarus , 1998 . Agricultural Pesticide Use in the Great Lakes Basin-Estimation of Major Active Ingredients Applied During 1994-1995 for the Lake Erie, Michigan, and Superior Basins . U.S. Environmental Protection Agency, Region 5, 14 pp.Available athttp://www.epa.gov/reg5rcra/ptb/pest/documents/pest_use.pdf.Accessed inMarch 2004.
3. Soils, Water Quality, and Watershed Size
4. G.D. Casey, D.N. Myers, D.P. Finnegan, and M.E. Wieczorek , 1997 . National Water-Quality Assessment of the Lake Erie-Lake St. Clair Basin, Michigan, Indiana, Ohio, Pennsylvania, and New York-Environmental and Hydrologic Setting . U.S. Geological Survey Water-Resources Investigations Report 97-4256, 93 pp.
5. Occurrence and load of selected herbicides and metabolites in the lower Mississippi River