Contaminated Sediment Studies — Mississippi River

• Investigation of the Vertical Distribution of Sediment Contaminants in Pool 2 and Lake Pepin of the Upper Mississippi River after the 1993 flood.
  
  • For further information, contact This e-mail address is being protected from spambots. You need JavaScript enabled to view it. at 651-757-2293.
    
    
• Occurrence of Endocrine Active Compounds and Biological Responses in the Mississippi River—Study Design and Data, June through August 2006 (prepared by the U.S. Geological Survey in cooperation with the MPCA and St. Cloud State University)
  • Project Description:  This report presents environmental data collected and analyzed as part of an integrated biological and chemical study of endocrine disruption in fish in the Mississippi River. Data were collected from water, bed sediment, and fish at 43 sites along the river from the headwaters at Lake Itasca to 14 miles downstream of Brownsville, MN during June through August 2006.
  • Forty individual compounds were detected in bed-sediment samples. The most commonly detected compounds (in at least 50 percent of the samples) were indole, beta-sitosterol, cholesterol, beta-stigmastanol, 3-methyl-1H-indole, p-cresol, pyrene, phenol, fluoranthene, 3-beta coprostanol, benzo[a]pyrene, acetophenone, and 2,6-dimethylnaphthalene. The total number of detections in bed sediment (at a site) ranged from 3 to 31.
  • For further information about the study results, see the U.S. Geological Survey web page at: http://pubs.usgs.gov/ds/368/ or contact This e-mail address is being protected from spambots. You need JavaScript enabled to view it. at 651-757-2656.