DN 19-20 DREDGING NOTICE
U.S. ARMY CORPS OF ENGINEERS
ST. PAUL DISTRICT
NOTICE DATE: June 21st, 2019 DREDGING CATEGORY: Emergency MEETING DATE: If requested MEETING TIME:
BOAT REQUIREMENT: MEETING LOCATION:
DREDGE CUT NAME: Head of Raft Channel RIVER MILE: 687.6 – 688.1
Frequency: 51% Avg. Quantity/Job: 36,025 yd3
Last Date Dredged: October 12th, 2018 Avg. Quantity/Year: 18,380 yd3
Date Surveyed: June 18th, 2018
Water Surface Elevation: 631.1
Low Control Pool Elevation: 629.7
Net Difference: +1.4’
5 Day River Forecast: Steady Decline
Recommended Channel Width: 400 feet
Recommended Dredging Depth: 12 feet
Estimated Quantity: 10,513 yd3 Only doing cut 2 cuts 1 and 3 will be deferred
Type of Dredge: Contract Mechanical
Actual Dredging Date: June 19th, 2019
Estimated Duration: 7 dredging days
Justification for Dredging: The navigation channel is closed between the 9.0’ contours and 10.5’ contours, on a bend with a recommended width of 400 feet.
MATERIAL PLACEMENT DATA
Proposed Placement Site: Brownsville Containment
Site Characteristics: This is a historically used beneficial use stockpile site. We expect all material to be removed.
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.