DN 19-25 DREDGING NOTICE
U.S. ARMY CORPS OF ENGINEERS
ST. PAUL DISTRICT
NOTICE DATE: June 27th, 2019 DREDGING CATEGORY: Imminent
MEETING DATE: MEETING TIME:
BOAT REQUIREMENT: MEETING LOCATION:
DREDGE CUT NAME: McMillan Island RIVER MILE: 618.8 – 619.0
HISTORIC DATA
Frequency: 49% Avg. Quantity/Job: 36,643 yd3
Date Last Dredged: October 19th, 2018 Avg. Quantity/Year: 17,948 yd3
SURVEY DATA
Date Surveyed: June 17th, 2019
Water Surface Elevation: 613.8
Low Control Pool Elevation: 609.8
Net Difference: +4.0
5 Day River Forecast: holding steady
DREDGING DATA
Recommended Channel Width: 500 feet
Recommended Dredging Depth: 11 feet
Estimated Quantity: 5,334 yd3
Type of Dredge: Government Mechanical
Proposed Dredging Date: June 27nd, 2019
Estimated Duration: 4 Dredging Days
Justification for Dredging: The navigation channel is restricted to 180’ between the 9.0’ contours and closed between the 10.5’ contours on a recommended bend of 500’. When the water gets down to flat pool.
MATERIAL PLACEMENT DATA
Proposed Placement Site: McMillan Island Placement Site
Location: 10-618.7-RIT
Site Characteristics: This is a historically used transfer site.
If you have any questions concerning this project, or if you would like to request an onsite meeting, please call a Dredging Manager at (651) 290-5155.