DN 19-44 DREDGING NOTICE
U.S. ARMY CORPS OF ENGINEERS
ST. PAUL DISTRICT
NOTICE DATE: September 16th, 2019 DREDGING CATEGORY: Imminent MEETING DATE: If requested MEETING TIME:
BOAT REQUIREMENT: MEETING LOCATION:
DREDGE CUT NAME: Blacksmith Slough RIVER MILE: 718.9 – 719.3
Frequency: 19% Avg. Quantity/Job: 18,606 yd3
Last Date Dredged: September 18th, 2018 Avg. Quantity/Year: 3,607 yd3
Date Surveyed: September 10th, 2019
Water Surface Elevation: 644.4
Low Control Pool Elevation: 644.2
Net Difference: +0.2’
5-Day River Forecast: Slow Increase
Recommended Channel Width: 300 feet
Recommended Dredging Depth: 12 feet
Estimated Quantity: 23,263 yd3
Type of Dredge: Contract Mechanical Plant 1
Actual Dredging Date: September 16th, 2019
Estimated Duration: 12 dredging days
Justification for Dredging: The navigation channel is reduced to 220’ between the 9.0’ contours and 120’ between the 10.5’ contours.
MATERIAL PLACEMENT DATA
Proposed Placement Site: Winona Technology Park and Homer
Location: 6-722.9-RMP and 6-720.5-RMP
Site Characteristics: 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.
Homer is a historically used beneficial use placement site.
Our hope is to only use Winona Technology Park but Homer is listed here in case the water comes up too high to offload at the East End Boat Harbor.
If you have any questions concerning this project, or if you would like to request an on‑site meeting, please call a dredging manager at (651) 290-5155.