DN 14-36                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

NOTICE DATE: September 11^th, 2014                      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

HISTORIC DATA

Frequency: 48%                                             Avg. Quantity/Job: 38,597 yd³

Last Date Dredged: October 8^th, 2013           Avg. Quantity/Year: 18,422 yd³

SURVEY DATA

Date Surveyed: September 9^th, 2014

Water Surface Elevation: 631.2

Low Control Pool Elevation: 629.8

Net Difference: +1.4’

5 Day River Forecast: Holding steady

DREDGING DATA

Recommended Channel Width: 400 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 27,760 yd³

Type of Dredge: Contract Mechanical

Proposed Dredging Date: September 11^th, 2014

Estimated Duration: 12 dredging days

Justification for Dredging: The navigation channel is restricted to 200 feet within the 9.0’ contours and closed within the 10.5’ contours. 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Brownsville

Location: 8-688.7-RMP

Site Characteristics: This is a historically used beneficial use stockpile site.  

If you have any questions concerning this project, or if you would like to request an on‑site meeting, please contact the Channel Maintenance Coordinator at (651) 290-5154.