DN 15-29                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

NOTICE DATE: August 27^th, 2015                           DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Root River                           RIVER MILE: 692.9 – 693.2

HISTORIC DATA

Frequency: 24%                                             Avg. Quantity/Job: 14,626 yd³

Last Date Dredged: August 15^th, 2014           Avg. Quantity/Year: 3,575 yd³

SURVEY DATA

Date Surveyed: August 25^th, 2015 

Water Surface Elevation: 630.7

Low Control Pool Elevation: 630.1

Net Difference: +0.6’

5 Day River Forecast: Steady Decline

DREDGING DATA

Recommended Channel Width: 300 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity:  10,309 yd³                   

Type of Dredge: Contract Mechanical

Proposed Dredging Date:  August 31^st, 2015

Estimated Duration: 4 dredging days

Justification for Dredging: The navigation channel is restricted to 130 feet within the 10.5’ contours and restricted to 335 within the 9.0’ contours.

MATERIAL PLACEMENT DATA

Proposed Placement Site: Isle La Plume

Location: 8-696.1-LWP

Site Characteristics: This is a historically used upland placement site with good access.  All material is expected to be removed.

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) 324-2050.