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Dredging Notice 15-40 Lock and Dam 4 Aux Lock Chamber

Posted: 10/23/2015

Expiration date:


DN 15-40                                           DREDGING NOTICE

                                              U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: October 23rd, 2015             DREDGING CATEGORY: Routine

MEETING DATE: If requested                     MEETING TIME:

BOAT REQUIREMENT:                              MEETING LOCATION:

 

DREDGE CUT NAME: LD 4 Aux Lock Chamber  RIVER MILE: 752.6 – 752.8

 

HISTORIC DATA

Frequency: 18%                                              Avg. Quantity/Job: 4,786 yd3

Last Date Dredged: October 15th, 2013         Avg. Quantity/Year: 851 yd3

 

SURVEY DATA

Date Surveyed: October 16th, 2015

Water Surface Elevation: 660.2

Low Control Pool Elevation: 659.6

Net Difference: + 0.6

5-Day River Forecast: Holding Steady

 

DREDGING DATA

Recommended Channel Width: Chamber Width

Recommended Dredging Depth: Cut 1: 8 feet to accommodate smaller boats.

                                                     Cut 2: 11 feet to accommodate navigation.

Estimated Quantity: 6,104 yd3

Type of Dredge: Government Mechanical

Proposed Dredging Date: October 27th, 2015

Estimated Duration: 5 dredging days

Justification for Dredging: Dredging is necessary to allow access for the emergency life boats to be deployed off the guide wall.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Alma Marina

Location: 4-754.0 LWP

Site Characteristics: This is a historically used beneficial use placement site. 

If you have any questions concerning this project, or if you would like to request an on‑site meeting, please contact the Channel Maintenance Coordinator at 651-324-2050.
 

Dredge Dredge 1540 Lock and Dam 4 Mississippi River navigation Pool 4 sedimentation St. Paul District U.S. Army Corps of Engineers

Bookmark and Share Email Print


Dredging Notice 15-40 Lock and Dam 4 Aux Lock Chamber

Posted: 10/23/2015

Expiration date:


DN 15-40                                           DREDGING NOTICE

                                              U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: October 23rd, 2015             DREDGING CATEGORY: Routine

MEETING DATE: If requested                     MEETING TIME:

BOAT REQUIREMENT:                              MEETING LOCATION:

 

DREDGE CUT NAME: LD 4 Aux Lock Chamber  RIVER MILE: 752.6 – 752.8

 

HISTORIC DATA

Frequency: 18%                                              Avg. Quantity/Job: 4,786 yd3

Last Date Dredged: October 15th, 2013         Avg. Quantity/Year: 851 yd3

 

SURVEY DATA

Date Surveyed: October 16th, 2015

Water Surface Elevation: 660.2

Low Control Pool Elevation: 659.6

Net Difference: + 0.6

5-Day River Forecast: Holding Steady

 

DREDGING DATA

Recommended Channel Width: Chamber Width

Recommended Dredging Depth: Cut 1: 8 feet to accommodate smaller boats.

                                                     Cut 2: 11 feet to accommodate navigation.

Estimated Quantity: 6,104 yd3

Type of Dredge: Government Mechanical

Proposed Dredging Date: October 27th, 2015

Estimated Duration: 5 dredging days

Justification for Dredging: Dredging is necessary to allow access for the emergency life boats to be deployed off the guide wall.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Alma Marina

Location: 4-754.0 LWP

Site Characteristics: This is a historically used beneficial use placement site. 

If you have any questions concerning this project, or if you would like to request an on‑site meeting, please contact the Channel Maintenance Coordinator at 651-324-2050.
 

Dredge Dredge 1540 Lock and Dam 4 Mississippi River navigation Pool 4 sedimentation St. Paul District U.S. Army Corps of Engineers