DN 18-18 Updated DREDGING NOTICE
U.S. ARMY CORPS OF ENGINEERS
ST. PAUL DISTRICT
NOTICE DATE: Aug 1st, Updated Aug 7st, 2018 DREDGING CATEGORY: Imminent
MEETING DATE: If requested MEETING TIME:
BOAT REQUIREMENT: MEETING LOCATION:
DREDGE CUT NAME: Winters Landing RIVER MILE: 707.6 – 707.9
HISTORIC DATA
Frequency: 56% Avg. Quantity/Job: 33,942 yd3
Date Last Dredged: August 17th, 2016 Avg. Quantity/Year: 19,092 yd3
SURVEY DATA
Date Surveyed: August 2nd, 2018
Water Surface Elevation: 639.6
Low Control Pool Elevation: 638.5
Net Difference: +1.1’
5 Day River Forecast: Slow Decline
DREDGING DATA
Recommended Channel Width: 300 feet (Only dredging to 240 at this time)
Recommended Dredging Depth: 12 feet
Estimated Quantity: 15,606 yd3 plus 90 yd3 Placement site access
Type of Dredge: Contract Mechanical
Proposed Dredging: August 7th, 2018
Estimated Duration: 8 dredging days
Justification for Dredging: The navigation channel is closed between the 9.0’ contours and the 10.5’ contours. When the water level gets down to LCP.
MATERIAL PLACEMENT DATA
Proposed Placement Site: Trempealeau
Locations: 7-714.1-LWP
Site Characteristics: This is a historically used beneficial use stockpile site. All material is expected to be removed.
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.