DN 19-32 DREDGING NOTICE
U.S. ARMY CORPS OF ENGINEERS
ST. PAUL DISTRICT
NOTICE DATE: July 19th, 2019 DREDGING CATEGORY: Imminent
MEETING DATE: If requested MEETING TIME:
BOAT REQUIREMENT: MEETING LOCATION:
DREDGE CUT NAME: Picayune Island RIVER MILE: 690.6 - 691.6
HISTORIC DATA
Frequency: 24% Avg. Quantity/Job: 38,589 yd3
Last Date Dredged: September 29th, 2018 Avg. Quantity/Year: 9,450 yd3
SURVEY DATA
Date Surveyed: July 18th, 2019
Water Surface Elevation: 632.9
Low Control Pool Elevation: 630.0
Net Difference: +2.9’
5 Day River Forecast: Slight rise, then holding steady
DREDGING DATA
Recommended Channel Width: 400 feet
Recommended Dredging Depth: 11 feet, 7 feet access
Estimated Quantity: 26,701 yd3, 972 yd3 access
Type of Dredge: Contract Mechanical
Proposed Dredging Date: July 22nd, 2019
Estimated Duration: 7 dredging days
Justification for Dredging: The navigation channel closed between the 10.5’ contours and reduced to 100 feet between the 9.0’ contours; on a bend with a recommended width of 400 feet.
MATERIAL PLACEMENT DATA
Proposed Placement Site: Above Brownsville
Location: 8-690.4-LWT
Site Characteristics: This is a historically used temporary placement site.
If you have any questions concerning this project or request an onsite meeting, please call the Channel Maintenance Coordinator at (651) 290-5154.