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  DN 1623 Lower Zumbro
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Dredge Notice 16-23 Lower Zumbro

Posted: 8/19/2016

Expiration date:


DN 16-23                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: August 13th, 2016                           DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Lower Zumbro                    RIVER MILE: 744.2 – 744.6

 

HISTORIC DATA

Frequency: 59%                                             Avg. Quantity/Job: 33,609 yd3

Last Date Dredged: August 23rd, 2014         Avg. Quantity/Year: 19,727 yd3

 

SURVEY DATA

Date Surveyed: August 3rd, 2016

Water Surface Elevation: 660.1

Low Control Pool Elevation: 659.4

Net Difference: +0.7

5 Day River Forecast: Steady Increase

 

DREDGING DATA

Recommended Channel Width: 300 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 28,238 yd3

Type of Dredge: Government Hydraulic

Proposed Dredging Date: August 14th, 2016

Estimated Duration:  Dredging Days

Justification for Dredging: The channel is reduced to 250’ between the 9’ contours and closed between the 10.5’ contours.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site:  Lost Island

Location: 5-744.7-LWT

Site Characteristics: This is a historically used temporary placement site.

 

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

 

 

Dredge Lower Zumbro Mississippi River navigation sedimentation St. Paul District U.S. Army Corps of Engineers

ATTACHMENTS


  DN 1623 Lower Zumbro
Bookmark and Share Email Print


Dredge Notice 16-23 Lower Zumbro

Posted: 8/19/2016

Expiration date:


DN 16-23                                            DREDGING NOTICE

                                               U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: August 13th, 2016                           DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                  MEETING TIME:

BOAT REQUIREMENT:                                           MEETING LOCATION:

DREDGE CUT NAME: Lower Zumbro                    RIVER MILE: 744.2 – 744.6

 

HISTORIC DATA

Frequency: 59%                                             Avg. Quantity/Job: 33,609 yd3

Last Date Dredged: August 23rd, 2014         Avg. Quantity/Year: 19,727 yd3

 

SURVEY DATA

Date Surveyed: August 3rd, 2016

Water Surface Elevation: 660.1

Low Control Pool Elevation: 659.4

Net Difference: +0.7

5 Day River Forecast: Steady Increase

 

DREDGING DATA

Recommended Channel Width: 300 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 28,238 yd3

Type of Dredge: Government Hydraulic

Proposed Dredging Date: August 14th, 2016

Estimated Duration:  Dredging Days

Justification for Dredging: The channel is reduced to 250’ between the 9’ contours and closed between the 10.5’ contours.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site:  Lost Island

Location: 5-744.7-LWT

Site Characteristics: This is a historically used temporary placement site.

 

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

 

 

Dredge Lower Zumbro Mississippi River navigation sedimentation St. Paul District U.S. Army Corps of Engineers