DN 18-15                                           DREDGING NOTICE

                                              U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

NOTICE DATE: July 24^th, 2018                                DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                 MEETING TIME:

BOAT REQUIREMENT:                                          MEETING LOCATION:

DREDGE CUT NAME: Upper Approach to LD 7   RIVER MILE: 702.5 – 702.8

HISTORIC DATA

Frequency: 13 %                                             Avg. Quantity/Job: 10,150 yd³

Date Last Dredged: August 16^th, 2017          Avg. Quantity/Year: 1,269 yd³

SURVEY DATA

Date Surveyed: July 18^th, 2018

Water Surface Elevation: 638.7

Low Control Pool Elevation: 638.5

Net Difference: +0.2

5 Day River Forecast: Holding Steady

DREDGING DATA

Recommended Channel Width: 300

Recommended Dredging Depth: 13 feet

Estimated Quantity: 9,007 yd³

Type of Dredge: Contract Mechanical

Proposed Dredging Date: July 25^th, 2018

Estimated Duration: 5 dredging day

Justification for Dredging:  Channel has been reduced 210’ between the 10.5’ contours and 290’ between the 9’ contours.

MATERIAL PLACEMENT DATA

Proposed Placement Site: Dakota Island

Locations: 7-706.5-RMT

Site Characteristics: This is a historically used temporary island site.

If you have any questions concerning this project, or if you would like to request an on‑site meeting, please call a dredging manager at (651) 290-5155.