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Channel Dredging near Atchafalaya Bluff – Pool 9, Mississippi River – Crawford County, Wisconsin Notice of Availibility for Public Review
The St. Paul District, Army Corps of Engineers is evaluating the effects on the nearby human environment of dredging approximately 15 acres in Pool 9 of the Mississippi River. A draft environmental assessment was released for a 30-day public review period on September 2, 2010. Comments received will be reviewed and considered in the final determination. The Draft Environmental Assessment (EA) and Draft Finding of No Significant Impact (FONSI) are available for download below.
Atchafalaya Bluff Dredging Environmental Assessment
Proposed Action
The U.S. Army Corps of Engineers is proposing to mechanically dredge two areas – one on each side of the navigation channel between Mississippi River Miles 660 and 661. Currently, the width of the navigable channel – the area with a water depth of at least 9-feet – is only 300 feet. Dredging the area would widen the navigable channel width to the suggested standard of 450 feet. Approximately 15 acres total would be dredged to about 12 feet deep. The nearby Lansing Highway Bridge site (RM 663.5) is the designated placement site for Pool 9. This placement site is active and has recently been used for material disposal; any future proposed placement sites would be reviewed as necessary prior to their use.
Schedule
Dredging for the project could begin as soon as fall 2010.