US Army Corps of Engineers
St. Paul District Website

Dredging Public Notices

Dredge Notice 19-03 Crats Island

Published May 10, 2019

DN 19-03                                           DREDGING NOTICE

                                              U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: May 10th, 2019                               DREDGING CATEGORY: Emergency

MEETING DATE: If requested                                 MEETING TIME:

BOAT REQUIREMENT:                                          MEETING LOCATION:

DREDGE CUT NAME: Crats Island                                    RIVER MILE: 758.8 – 759.2

 

HISTORIC DATA

Frequency: 80%                                              Avg. Quantity/Job: 67,411 yd3

Date Last Dredged: September 19th, 2018     Avg. Quantity/Year: 53,654 yd3

 

SURVEY DATA

Date Surveyed: May 7th, 2019

Water Surface Elevation: 670.9

Low Control Pool Elevation: 666.5

Net Difference: +4.4’

5 Day River Forecast: Slight Rise

 

DREDGING DATA

Recommended Channel Width: 450 feet

Recommended Dredging Depth: 11 feet

Estimated Quantity: 24,891 yd3

Type of Dredge: Government Mechanical – Rock Island

Proposed Dredging Date: May 10th, 2019

Estimated Duration: 17 dredging days (12 hour operations)

Justification for Dredging: The navigation channel is closed between the 9.0’ and the 10.5’ contours. On a recommended bend width of 450’.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Crats Island

Location: 4-759.3-LWT

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 dredging manager at 651-290-5155.

 

 


Dredge Notice 19-03 Crats Island

Published May 10, 2019

DN 19-03                                           DREDGING NOTICE

                                              U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: May 10th, 2019                               DREDGING CATEGORY: Emergency

MEETING DATE: If requested                                 MEETING TIME:

BOAT REQUIREMENT:                                          MEETING LOCATION:

DREDGE CUT NAME: Crats Island                                    RIVER MILE: 758.8 – 759.2

 

HISTORIC DATA

Frequency: 80%                                              Avg. Quantity/Job: 67,411 yd3

Date Last Dredged: September 19th, 2018     Avg. Quantity/Year: 53,654 yd3

 

SURVEY DATA

Date Surveyed: May 7th, 2019

Water Surface Elevation: 670.9

Low Control Pool Elevation: 666.5

Net Difference: +4.4’

5 Day River Forecast: Slight Rise

 

DREDGING DATA

Recommended Channel Width: 450 feet

Recommended Dredging Depth: 11 feet

Estimated Quantity: 24,891 yd3

Type of Dredge: Government Mechanical – Rock Island

Proposed Dredging Date: May 10th, 2019

Estimated Duration: 17 dredging days (12 hour operations)

Justification for Dredging: The navigation channel is closed between the 9.0’ and the 10.5’ contours. On a recommended bend width of 450’.

 

MATERIAL PLACEMENT DATA

Proposed Placement Site: Crats Island

Location: 4-759.3-LWT

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 dredging manager at 651-290-5155.