DN 20-12 DREDGING NOTICE
U.S. ARMY CORPS OF ENGINEERS
ST. PAUL DISTRICT
NOTICE DATE: May 14th, 2020 DREDGING CATEGORY: Imminent
MEETING DATE: If requested MEETING TIME:
BOAT REQUIREMENT: MEETING LOCATION:
DREDGE CUT NAME: Winters Landing RIVER MILE: 707.7 – 708.0
HISTORIC DATA
Frequency: 58% Avg. Quantity/Job: 32,846 yd3
Date Last Dredged: July 15th, 2019 Avg. Quantity/Year: 19,050 yd3
SURVEY DATA
Date Surveyed: May 13th, 2020
Water Surface Elevation: 639.4
Low Control Pool Elevation: 638.5
Net Difference: +0.9’
5 Day River Forecast: Slight Decline
DREDGING DATA
Recommended Channel Width: 300 feet
Recommended Dredging Depth: 11 feet
Estimated Quantity: 17,899 yd3 plus 972 yd3 Placement site access
Type of Dredge: Contract Mechanical
Proposed Dredging: May 14th, 2020
Estimated Duration: 9 dredging days
Justification for Dredging: There is 200’ between the 9.0’ contours and closed between the 10.5’ contours.
MATERIAL PLACEMENT DATA
Proposed Placement Site: Dakota Island
Locations: 7-706-5-RMT
Site Characteristics: This is a historically used temporary island site.
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.