US Army Corps of Engineers
St. Paul District Website

Dredging Public Notices

Dredge Notice 20-38 Head of Raft Channel

Published Sept. 8, 2020

DN 20-38                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: September 8th, 2020                        DREDGING CATEGORY: Imminent MEETING DATE: If requested                             MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Head of Raft Channel         RIVER MILE: 687.6 – 688.0

 

HISTORIC DATA

Frequency: 52%                                             Avg. Quantity/Job: 35,113 yd3

Last Date Dredged: May 13th, 2020               Avg. Quantity/Year: 18,259 yd3

 

SURVEY DATA

Date Surveyed: September 3rd, 2020

Water Surface Elevation: 630.2

Low Control Pool Elevation: 629.8

Net Difference: +0.4’

5 Day River Forecast: Holding Steady

 

DREDGING DATA

Recommended Channel Width: 400 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 30,713 yd3

Type of Dredge: Contract Mechanical plant 1

Dredging Start Date: September 8th, 2020

Estimated Duration: 15 dredging days

Justification for Dredging: The navigation channel is reduced to 260’ between the 9.0’ contours and 130’ between the 10.5’ contours, on a bend with a recommended width of 400 feet. 

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Brownsville Containment

Location: 8-688.7-RMP

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 call a dredging manager at (651) 290-5155.

 


Dredge Notice 20-38 Head of Raft Channel

Published Sept. 8, 2020

DN 20-38                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: September 8th, 2020                        DREDGING CATEGORY: Imminent MEETING DATE: If requested                             MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Head of Raft Channel         RIVER MILE: 687.6 – 688.0

 

HISTORIC DATA

Frequency: 52%                                             Avg. Quantity/Job: 35,113 yd3

Last Date Dredged: May 13th, 2020               Avg. Quantity/Year: 18,259 yd3

 

SURVEY DATA

Date Surveyed: September 3rd, 2020

Water Surface Elevation: 630.2

Low Control Pool Elevation: 629.8

Net Difference: +0.4’

5 Day River Forecast: Holding Steady

 

DREDGING DATA

Recommended Channel Width: 400 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 30,713 yd3

Type of Dredge: Contract Mechanical plant 1

Dredging Start Date: September 8th, 2020

Estimated Duration: 15 dredging days

Justification for Dredging: The navigation channel is reduced to 260’ between the 9.0’ contours and 130’ between the 10.5’ contours, on a bend with a recommended width of 400 feet. 

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Brownsville Containment

Location: 8-688.7-RMP

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 call a dredging manager at (651) 290-5155.