DN 16-28 DREDGING NOTICE
U.S. ARMY CORPS OF ENGINEERS
ST. PAUL DISTRICT
NOTICE DATE: August 30th, 2016 DREDGING CATEGORY: Imminent MEETING DATE: If requested MEETING TIME:
BOAT REQUIREMENT: MEETING LOCATION:
DREDGE CUT NAME: Head of Raft Channel RIVER MILE: 687.6 – 688.1
Frequency: 48% Avg. Quantity/Job: 37,922 yd3
Last Date Dredged: September 11th, 2014 Avg. Quantity/Year: 18,137 yd3
Date Surveyed: August 29th, 2016
Water Surface Elevation: 631.9
Low Control Pool Elevation: 629.8
Net Difference: +2.1’
5 Day River Forecast: Steady Decline
Recommended Channel Width: 400 feet
Recommended Dredging Depth: 12 feet
Estimated Quantity: 27,822 yd3
Type of Dredge: Contract Mechanical
Proposed Dredging Date: August 31st, 2016
Estimated Duration: 14 dredging days
Justification for Dredging: The navigation channel is reduced to 295 feet between the 9.0’ contours and reduced to 160 feet between the 10.5’ contours, on a recommended bend of 400’.
MATERIAL PLACEMENT DATA
Proposed Placement Site: Brownsville
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 contact a Channel Maintenance Coordinator at (651) 290-5155.