DN 19-39 DREDGING NOTICE
U.S. ARMY CORPS OF ENGINEERS
ST. PAUL DISTRICT
NOTICE DATE: August 26th, 2019 DREDGING CATEGORY: Emergency
MEETING DATE: If requested MEETING TIME:
BOAT REQUIREMENT: MEETING LOCATION:
DREDGE CUT NAME: Diamond Bluff RIVER MILE: 800.4 – 800.6
HISTORIC DATA
Frequency: 47% Avg. Quantity/Job: 33,602 yd3
Date Last Dredged: November 16th, 2018 Avg. Quantity/Year: 15,772 yd3
SURVEY DATA
Date Surveyed: August 26th, 2019
Water Surface Elevation: 674.0
Low Control Pool Elevation: 673.7
Net Difference: + 0.3’
5 Day River Forecast: Holding Steady
DREDGING DATA
Recommended Channel Width: 450 feet
Recommended Dredging Depth: 11 feet
Estimated Quantity: 16,489 yd3 and 148 yd3 for placement site access
Type of Dredge: Contract Mechanical
Proposed Dredging Date: August 26th, 2019
Estimated Duration: 5 – 24 hour dredging days
Justification for Dredging: The navigation channel is closed between the 9’ contours and the 10.5’ contours. Since the water is up only 0.3’ 9 foot drafting traffic cannot pass until the first 3 cuts are completed and a 180’ pilot channel is created.
MATERIAL PLACEMENT DATA
Proposed Placement Site: Corps Island
Location: 3-799.2-RMT
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 on‑site meeting, please call a dredging manager at (651) 290-5155