US Army Corps of Engineers
St. Paul District Website

Dredging Public Notices

Dredge Notice 20-45 Lansing Upper Light

Published Oct. 23, 2020

DN 20-45                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: October 23rd, 2020                          DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Lansing Upper Light           RIVER MILE: 663.7 – 664.8

 

HISTORIC DATA

Frequency: 74%                                             Avg. Quantity/Job: 43,369 yd3

Date Last Dredged: June 3rd, 2020                 Avg. Quantity/Year: 32,093 yd3

 

SURVEY DATA

Date Surveyed: October 21st, 2020

Water Surface Elevation: 619.8

Low Control Pool Elevation: 619.3

Net Difference: +0.5

5 Day River Forecast: Slight Increase

 

DREDGING DATA

Recommended Channel Width: 500 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 54,316 yd3

Type of Dredge: Government Hydraulic

Proposed Dredging Date: October 25th, 2020

Estimated Duration: 6 Dredging days

Justification for Dredging: The navigation channel is reduced to 250 feet between the 9’ contours and 65 feet between the 10.5’ contours. On a recommended bend width of 500 feet.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Lansing Hwy Bridge Site

Location: 9-663.5-LWP

Site Characteristics: The Lansing Hwy Bridge Site is an upland beneficial use site where 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 call me a dredging manager at (651) 290-5155.

 


Dredge Notice 20-45 Lansing Upper Light

Published Oct. 23, 2020

DN 20-45                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: October 23rd, 2020                          DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Lansing Upper Light           RIVER MILE: 663.7 – 664.8

 

HISTORIC DATA

Frequency: 74%                                             Avg. Quantity/Job: 43,369 yd3

Date Last Dredged: June 3rd, 2020                 Avg. Quantity/Year: 32,093 yd3

 

SURVEY DATA

Date Surveyed: October 21st, 2020

Water Surface Elevation: 619.8

Low Control Pool Elevation: 619.3

Net Difference: +0.5

5 Day River Forecast: Slight Increase

 

DREDGING DATA

Recommended Channel Width: 500 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 54,316 yd3

Type of Dredge: Government Hydraulic

Proposed Dredging Date: October 25th, 2020

Estimated Duration: 6 Dredging days

Justification for Dredging: The navigation channel is reduced to 250 feet between the 9’ contours and 65 feet between the 10.5’ contours. On a recommended bend width of 500 feet.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Lansing Hwy Bridge Site

Location: 9-663.5-LWP

Site Characteristics: The Lansing Hwy Bridge Site is an upland beneficial use site where 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 call me a dredging manager at (651) 290-5155.