US Army Corps of Engineers
St. Paul District Website

Dredging Public Notices

Dredge Notice 20-40 Freeborn Light

Published Sept. 28, 2020

DN 20-40                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: September 28th, 2020                      DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Freeborn Light                    RIVER MILE: 818.2 – 819.4

 

HISTORIC DATA

Frequency: 34%                                             Avg. Quantity/Job:  36,077 yd3

Date Last Dredged:  July 16th, 2019              Avg. Quantity/Year:  12,266 yd3

 

SURVEY DATA

Date Surveyed: September 23rd, 2020

Water Surface Elevation: 686.7

Low Control Pool Elevation: 686.2

Net Difference: +0.5’

5-Day River Forecast: Holding Steady

 

DREDGING DATA

Recommended Channel Width: 400 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 47,558 yd3  plus 1,276 yd3 for access

Type of Dredge: Contract Mechanical Plant 3

Proposed Dredging Date: September 28th, 2020

Estimated Duration: 25 dredging days

Justification for Dredging: The navigation channel is reduced to 195’ between the 9.0’ contours and 155’ between 10.5’.  On a recommended bend width of 400’.  

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Lower Boulanger Placement Site

Location: 2-821.1-LMT

Site Characteristics: It is a historically used temporary placement 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

 

 

 


Dredge Notice 20-40 Freeborn Light

Published Sept. 28, 2020

DN 20-40                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: September 28th, 2020                      DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Freeborn Light                    RIVER MILE: 818.2 – 819.4

 

HISTORIC DATA

Frequency: 34%                                             Avg. Quantity/Job:  36,077 yd3

Date Last Dredged:  July 16th, 2019              Avg. Quantity/Year:  12,266 yd3

 

SURVEY DATA

Date Surveyed: September 23rd, 2020

Water Surface Elevation: 686.7

Low Control Pool Elevation: 686.2

Net Difference: +0.5’

5-Day River Forecast: Holding Steady

 

DREDGING DATA

Recommended Channel Width: 400 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 47,558 yd3  plus 1,276 yd3 for access

Type of Dredge: Contract Mechanical Plant 3

Proposed Dredging Date: September 28th, 2020

Estimated Duration: 25 dredging days

Justification for Dredging: The navigation channel is reduced to 195’ between the 9.0’ contours and 155’ between 10.5’.  On a recommended bend width of 400’.  

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Lower Boulanger Placement Site

Location: 2-821.1-LMT

Site Characteristics: It is a historically used temporary placement 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