US Army Corps of Engineers
St. Paul District Website

Dredging Public Notices

Dredge Notice 15-13 Crats Island

Published June 1, 2015

DN 15-13                                           DREDGING NOTICE

                                              U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: June 1st, 2015                                 DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                 MEETING TIME:

BOAT REQUIREMENT:                                          MEETING LOCATION:

 

DREDGE CUT NAME: Crats Island                                    RIVER MILE: 758.7 – 759.3

 

HISTORIC DATA

Frequency: 80%                                              Avg. Quantity/Job: 69,627 yd3

Date Last Dredged: August 19th, 2014          Avg. Quantity/Year: 55,702 yd3

 

SURVEY DATA

Date Surveyed: May 21st, 2015

Water Surface Elevation: 667.3

Low Control Pool Elevation: 666.5

Net Difference: +0.8’

5 Day River Forecast: Slow Increase

 

DREDGING DATA

Recommended Channel Width: 450feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 42,631 yd3

Type of Dredge: Government Hydraulic

Proposed Dredging Date: June 1st, 2015

Estimated Duration: 5 dredging days

Justification for Dredging: The navigation channel is reduced to 370’ between the 9.0’ contours and reduced to 180’ between the 10.5’ contours.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Crats Island

Location: 4-759.3-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 Notice 15-13 Crats Island

Published June 1, 2015

DN 15-13                                           DREDGING NOTICE

                                              U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: June 1st, 2015                                 DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                 MEETING TIME:

BOAT REQUIREMENT:                                          MEETING LOCATION:

 

DREDGE CUT NAME: Crats Island                                    RIVER MILE: 758.7 – 759.3

 

HISTORIC DATA

Frequency: 80%                                              Avg. Quantity/Job: 69,627 yd3

Date Last Dredged: August 19th, 2014          Avg. Quantity/Year: 55,702 yd3

 

SURVEY DATA

Date Surveyed: May 21st, 2015

Water Surface Elevation: 667.3

Low Control Pool Elevation: 666.5

Net Difference: +0.8’

5 Day River Forecast: Slow Increase

 

DREDGING DATA

Recommended Channel Width: 450feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 42,631 yd3

Type of Dredge: Government Hydraulic

Proposed Dredging Date: June 1st, 2015

Estimated Duration: 5 dredging days

Justification for Dredging: The navigation channel is reduced to 370’ between the 9.0’ contours and reduced to 180’ between the 10.5’ contours.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Crats Island

Location: 4-759.3-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.