US Army Corps of Engineers
St. Paul District Website

Dredging Public Notices

Dredge Notice 20-44 Below Mt Vernon Light

Published Oct. 22, 2020

DN 20-44                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: October 22nd, 2020                         DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Below Mt. Vernon Light     RIVER MILE: 740.0 – 740.3

 

HISTORIC DATA

Frequency: 2%                                               Avg. Quantity/Job: 10,732 yd3

Date Last Dredged: August 13th, 2018           Avg. Quantity/Year: 215 yd3

 

SURVEY DATA

Date Surveyed: October 20th, 2020

Water Surface Elevation: 659.4

Low Control Pool Elevation: 659.2

Net Difference: +0.2’

5 Day River Forecast: Holding Steady

 

DREDGING DATA

Recommended Channel Width: 300 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 33,837 yd3 plus 47 yd3 for placement site access

Type of Dredge: Contract Mechanical Plant 2

Proposed Dredging Date: October 22nd, 2020

Estimated Duration: 17 dredging days

Justification for Dredging: The navigation channel is reduced to 345’ between the 9.0’ contours and 225 feet between the 10.5’ contours at the start of a recommended 500’ bend width.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Lost Island

Location: 5-744.7-LWT

Site Characteristics: This 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 20-44 Below Mt Vernon Light

Published Oct. 22, 2020

DN 20-44                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: October 22nd, 2020                         DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Below Mt. Vernon Light     RIVER MILE: 740.0 – 740.3

 

HISTORIC DATA

Frequency: 2%                                               Avg. Quantity/Job: 10,732 yd3

Date Last Dredged: August 13th, 2018           Avg. Quantity/Year: 215 yd3

 

SURVEY DATA

Date Surveyed: October 20th, 2020

Water Surface Elevation: 659.4

Low Control Pool Elevation: 659.2

Net Difference: +0.2’

5 Day River Forecast: Holding Steady

 

DREDGING DATA

Recommended Channel Width: 300 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 33,837 yd3 plus 47 yd3 for placement site access

Type of Dredge: Contract Mechanical Plant 2

Proposed Dredging Date: October 22nd, 2020

Estimated Duration: 17 dredging days

Justification for Dredging: The navigation channel is reduced to 345’ between the 9.0’ contours and 225 feet between the 10.5’ contours at the start of a recommended 500’ bend width.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Lost Island

Location: 5-744.7-LWT

Site Characteristics: This 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.