DN 19-42 DREDGING NOTICE
U.S. ARMY CORPS OF ENGINEERS
ST. PAUL DISTRICT
NOTICE DATE: September 9th, 2019 DREDGING CATEGORY: Emergency
MEETING DATE: If requested MEETING TIME:
BOAT REQUIREMENT: MEETING LOCATION:
DREDGE CUT NAME: Below Winona RR Bridge RIVER MILE: 723.0 – 723.6
Frequency: 49% Avg. Quantity/Job: 25,932 yd3
Date Last Dredged: October 8th, 2018 Avg. Quantity/Year: 12,701 yd3
Date Surveyed: September 8th, 2019
Water Surface Elevation: 645.2
Low Control Pool Elevation: 644.6
Net Difference: +0.6’
5 Day River Forecast: Holding Steady
Recommended Channel Width: 300 feet
Recommended Dredging Depth: 11 feet
Estimated Quantity: 17,662 yd3 plus 509 yd3 for placement site access at East End Boat Harbor
Type of Dredge: Contract Mechanical
Proposed Dredging Date: September 9th, 2019
Estimated Duration: 5 – 24 hour dredging days
Justification for Dredging: The navigation channel is closed between the 9’ and 10.5’ contours. Tow boats are currently waiting until 180’ pilot channel is complete.
MATERIAL PLACEMENT DATA
Proposed Placement Site: Homer and Winona Technology Park
Location: 6-720.5-RMP, 6-722.9-RMP
Site Characteristics: Homer is a historically used beneficial use placement site.
Winona Technology Park is a site provided by the Winona Port Authority. The Winona Port Authority has obtained all necessary permits for this action. The East End Boat Harbor (RM 723.6) is the offload site and material is trucked to Technology Park.
If you have any questions concerning this project, or if you would like to request an on‑site meeting, please call me a dredging manager at (651) 290-5155.