Historical Perspective on Arrival of First Tows Mississippi River
Location | Ave Date for for First Tow Last 30 Years | Ave Date for First Tow Last 10 Years |
Earliest Date over 30 Years | Latest * Date over 30 Years |
St. Paul, MN | March 20 | March 22 | March 4, 1984, 1996, & 2000 |
May 11, 2001 |
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Lock & Dam No. 4 Mile 753 Alma, WI |
March 17 | March 16 | March 3, 1983, 1984,& 2000 |
May 9, 2001 |
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Lock & Dam No. 6 Mile 714 Trempealeau, WI |
March 15 | March 14 | March 3, 1976, 1983, 1984, & 2000 | April 4, 1978
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Lock & Dam No. 10 Mile 615 Guttenberg, IA | March 11 |
March 9 | February 26, 1976 | April 3, 1978 |
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The spring floods of 2001 resulted in the latest opening of the locks and dams, particularly in the Twin Cities area. High water and hazards to boating/shipping were the cause for the late openings.
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