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  DN 17-15 Fisher Island
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Dredge Notice 17-15 Fisher Island

Posted: 6/22/2017

Expiration date:


DN 17-15                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: June 22nd, 2017                               DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Fisher Island                        RIVER MILE: 744.9 – 745.8

 

HISTORIC DATA

Frequency: 79 %                                            Avg. Quantity/Job: 47,610 yd3

Date Last Dredged: August 7th, 2016             Avg. Quantity/Year: 37,480 yd3

 

SURVEY DATA

Date Surveyed: June 15th, 2017

Water Surface Elevation: 660.4

Low Control Pool Elevation: 659.4

Net Difference: +1.0

5-Day River Forecast: Slow Decline

 

DREDGING DATA

Recommended Channel Width: 500 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 64,609 yd3

Type of Dredge: Government Hydraulic

Proposed Dredging Date: June 21st, 2017

Estimated Duration: 8 dredging days

Justification for Dredging: The navigation channel is reduced to 140’ between the 9’ contours and closed between the the 10.5’ contours. On a recommended bend width of 500’.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Above Fisher Island

Location: 5-745.8-RMT

Site Characteristics: This is a historically used island transfer site.

 

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.

 

 

 

Dredge Fisher Island Mississippi River navigation sedimentation St. Paul District U.S. Army Corps of Engineers

ATTACHMENTS


  DN 17-15 Fisher Island
Bookmark and Share Email Print


Dredge Notice 17-15 Fisher Island

Posted: 6/22/2017

Expiration date:


DN 17-15                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: June 22nd, 2017                               DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Fisher Island                        RIVER MILE: 744.9 – 745.8

 

HISTORIC DATA

Frequency: 79 %                                            Avg. Quantity/Job: 47,610 yd3

Date Last Dredged: August 7th, 2016             Avg. Quantity/Year: 37,480 yd3

 

SURVEY DATA

Date Surveyed: June 15th, 2017

Water Surface Elevation: 660.4

Low Control Pool Elevation: 659.4

Net Difference: +1.0

5-Day River Forecast: Slow Decline

 

DREDGING DATA

Recommended Channel Width: 500 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 64,609 yd3

Type of Dredge: Government Hydraulic

Proposed Dredging Date: June 21st, 2017

Estimated Duration: 8 dredging days

Justification for Dredging: The navigation channel is reduced to 140’ between the 9’ contours and closed between the the 10.5’ contours. On a recommended bend width of 500’.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Above Fisher Island

Location: 5-745.8-RMT

Site Characteristics: This is a historically used island transfer site.

 

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.

 

 

 

Dredge Fisher Island Mississippi River navigation sedimentation St. Paul District U.S. Army Corps of Engineers