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Dredge Notice 17-41 Below Winona RR Bridge

Posted: 9/14/2017

Expiration date: 12/31/2018


DN 17-41                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: September 14th, 2017                      DREDGING CATEGORY: Routine

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Below Winona RR Bridge  RIVER MILE: 723.2 – 723.6

 

HISTORIC DATA

Frequency: 47%                                             Avg. Quantity/Job: 25,734 yd3

Date Last Dredged: August 1st, 2017             Avg. Quantity/Year: 12,045yd3

 

SURVEY DATA

Date Surveyed:  September 6th, 2017

Water Surface Elevation: 645.7

Low Control Pool Elevation: 644.6

Net Difference: +1.1

5 Day River Forecast:  Holding steady

 

DREDGING DATA

Recommended Channel Width: 300 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 14,795 yd3

Type of Dredge: Government Mechanical

Proposed Dredging Date: September 14th, 2017

Estimated Duration: 10 dredging days

Justification for Dredging: The navigation channel is reduced to 175’ between 10.5’ contours.

  

MATERIAL PLACEMENT DATA

Proposed Placement Site: Mosquito Island

Location: 6-722.0-LWP

Site Characteristics:  Mosquito Island is a newly RRF endorsed placement site, the island will be extended upstream and protected with rock, soil and plantings when complete.

 

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 at (651) 290-5155.

 

 

 

 

Below Winona RR Bridge Dredge Mississippi River navigation sedimentation St. Paul District U.S. Army Corps of Engineers

Bookmark and Share Email Print


Dredge Notice 17-41 Below Winona RR Bridge

Posted: 9/14/2017

Expiration date: 12/31/2018


DN 17-41                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: September 14th, 2017                      DREDGING CATEGORY: Routine

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Below Winona RR Bridge  RIVER MILE: 723.2 – 723.6

 

HISTORIC DATA

Frequency: 47%                                             Avg. Quantity/Job: 25,734 yd3

Date Last Dredged: August 1st, 2017             Avg. Quantity/Year: 12,045yd3

 

SURVEY DATA

Date Surveyed:  September 6th, 2017

Water Surface Elevation: 645.7

Low Control Pool Elevation: 644.6

Net Difference: +1.1

5 Day River Forecast:  Holding steady

 

DREDGING DATA

Recommended Channel Width: 300 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 14,795 yd3

Type of Dredge: Government Mechanical

Proposed Dredging Date: September 14th, 2017

Estimated Duration: 10 dredging days

Justification for Dredging: The navigation channel is reduced to 175’ between 10.5’ contours.

  

MATERIAL PLACEMENT DATA

Proposed Placement Site: Mosquito Island

Location: 6-722.0-LWP

Site Characteristics:  Mosquito Island is a newly RRF endorsed placement site, the island will be extended upstream and protected with rock, soil and plantings when complete.

 

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 at (651) 290-5155.

 

 

 

 

Below Winona RR Bridge Dredge Mississippi River navigation sedimentation St. Paul District U.S. Army Corps of Engineers