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Dredging Notice 15-23 Upper Approach to LD 7

Posted: 7/27/2015

Expiration date:


DN 15-23                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: July 27th, 2015                                DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

 

DREDGE CUT NAME: Upper Approach to LD 7    RIVER MILE: 702.5 – 703.0

                                                                       

 

HISTORIC DATA

Frequency: 7 %                                              Avg. Quantity/Job: 10,815 yd3

Date Last Dredged: August 29th, 2012           Avg. Quantity/Year: 721 yd3

 

SURVEY DATA

Date Surveyed: July 20th, 2015

Water Surface Elevation: 638.6

Low Control Pool Elevation: 638.5

Net Difference: + 0.1’

5 Day River Forecast: Holding steady

 

DREDGING DATA

Recommended Channel Width: 300

Recommended Dredging Depth: 13 feet

Estimated Quantity: 15,796 yd3

Type of Dredge: Contract Mechanical

Proposed Dredging Date: July 27th, 2015

Estimated Duration: 8 dredging days

Justification for Dredging:  Channel has been reduced 200’ between the 10.5’ contours and 290’ between the 9’ contours.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Trempealeau

Locations: 7-714.1-LWP

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

 

If you have any questions concerning this project or request an on‑site meeting; please call the Channel Maintenance Coordinator

 at (651) 290-5155.

 

 

Dredge Mississippi River navigation sedimentation St. Paul District U.S. Army Corps of Engineers Upper Approach to LD 7

Bookmark and Share Email Print


Dredging Notice 15-23 Upper Approach to LD 7

Posted: 7/27/2015

Expiration date:


DN 15-23                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: July 27th, 2015                                DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

 

DREDGE CUT NAME: Upper Approach to LD 7    RIVER MILE: 702.5 – 703.0

                                                                       

 

HISTORIC DATA

Frequency: 7 %                                              Avg. Quantity/Job: 10,815 yd3

Date Last Dredged: August 29th, 2012           Avg. Quantity/Year: 721 yd3

 

SURVEY DATA

Date Surveyed: July 20th, 2015

Water Surface Elevation: 638.6

Low Control Pool Elevation: 638.5

Net Difference: + 0.1’

5 Day River Forecast: Holding steady

 

DREDGING DATA

Recommended Channel Width: 300

Recommended Dredging Depth: 13 feet

Estimated Quantity: 15,796 yd3

Type of Dredge: Contract Mechanical

Proposed Dredging Date: July 27th, 2015

Estimated Duration: 8 dredging days

Justification for Dredging:  Channel has been reduced 200’ between the 10.5’ contours and 290’ between the 9’ contours.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Trempealeau

Locations: 7-714.1-LWP

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

 

If you have any questions concerning this project or request an on‑site meeting; please call the Channel Maintenance Coordinator

 at (651) 290-5155.

 

 

Dredge Mississippi River navigation sedimentation St. Paul District U.S. Army Corps of Engineers Upper Approach to LD 7