A retrospective look at pesticides in streams and bed sediment in part of the Upper Mississippi River Basin, 1974-94 in Minnesota Water '96--Changing Patterns of Power and Responsibility: Implications for Water Policy, Fifth Biennial Conference on Water Resources in Minnesota, University of Minnesota, Water Resources Research Center, May 20-21, 1996
By Fallon, J.D.
Abstract
The preface of a slide presentation at the conference is the abstract.
Pesticide data from streams and bed sediments sampled by Federal, State, and local agencies in that part of the Mississippi River and its tributaries upstream from the outlet of Lake Pepin and downstream of Royalton on the Mississippi River and Jordan on the Minnesota River were summarized. Rivers sampled by the Minnesota Department of Agriculture and the Minnesota Pollution Control Agency for analyses of herbicides and insecticides indicate that atrazine, cyanazine, metolachlor, and alachlor were the most commonly detected pesticides in surface water during the spring and summer. Analyses of bed sediment samples by the Metropolitan Council Environmental Services and the U.S. Army Corps of Engineers indicate that DDT, DDE, DDD, and chlordane were the most commonly detected insecticides and insecticide metabolites.
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U.S. Department of the Interior |
U.S. Geological Survey
