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Dredge Notice 17-45 Lansing Upper Light

Posted: 10/24/2017

Expiration date: 12/31/2018


DN 17-45                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: October 24th, 2017                          DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Lansing Upper Light           RIVER MILE: 664.1 – 664.7

 

HISTORIC DATA

Frequency: 72%                                             Avg. Quantity/Job: 44,408 yd3

Date Last Dredged: April 25th, 2017              Avg. Quantity/Year: 32,125 yd3

 

SURVEY DATA

Date Surveyed: October 17th, 2017 

Water Surface Elevation: 623.8

Low Control Pool Elevation: 619.3

Net Difference: +4.5

5 Day River Forecast: Slow Decline

 

DREDGING DATA

Recommended Channel Width: 500 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 19,261 yd3 and 86 yd3 Access

Type of Dredge: Contract Mechanical

Proposed Dredging Date: October 24th, 2017

Estimated Duration: 10 Dredging days

Justification for Dredging: The navigation channel is reduced to 350 feet between the 9’ contours and reduced to 85 feet between the 10.5’ contours. On a recommended bend width of 500 feet.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Lansing Hwy. Bridge

Location: 9-663.5-LWP

Site Characteristics: This is a historically used beneficial use stockpile site.  Removal of all material is expected.

 

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

 

 

 

 

Dredge Lansing Upper Light Mississippi River navigation sedimentation St. Paul District U.S. Army Corps of Engineers XXXXX

Bookmark and Share Email Print


Dredge Notice 17-45 Lansing Upper Light

Posted: 10/24/2017

Expiration date: 12/31/2018


DN 17-45                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: October 24th, 2017                          DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Lansing Upper Light           RIVER MILE: 664.1 – 664.7

 

HISTORIC DATA

Frequency: 72%                                             Avg. Quantity/Job: 44,408 yd3

Date Last Dredged: April 25th, 2017              Avg. Quantity/Year: 32,125 yd3

 

SURVEY DATA

Date Surveyed: October 17th, 2017 

Water Surface Elevation: 623.8

Low Control Pool Elevation: 619.3

Net Difference: +4.5

5 Day River Forecast: Slow Decline

 

DREDGING DATA

Recommended Channel Width: 500 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 19,261 yd3 and 86 yd3 Access

Type of Dredge: Contract Mechanical

Proposed Dredging Date: October 24th, 2017

Estimated Duration: 10 Dredging days

Justification for Dredging: The navigation channel is reduced to 350 feet between the 9’ contours and reduced to 85 feet between the 10.5’ contours. On a recommended bend width of 500 feet.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Lansing Hwy. Bridge

Location: 9-663.5-LWP

Site Characteristics: This is a historically used beneficial use stockpile site.  Removal of all material is expected.

 

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

 

 

 

 

Dredge Lansing Upper Light Mississippi River navigation sedimentation St. Paul District U.S. Army Corps of Engineers XXXXX