US Army Corps of Engineers
St. Paul District Website

Dredging Public Notices

Dredge Notice 20-14 Crats Island

Published May 14, 2020

DN 20-14                                           DREDGING NOTICE

                                              U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: May 14th, 2020                               DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                 MEETING TIME:

BOAT REQUIREMENT:                                          MEETING LOCATION:

DREDGE CUT NAME: Crats Island                                    RIVER MILE: 758.8 – 759.3

 

HISTORIC DATA

Frequency: 80%                                              Avg. Quantity/Job: 68,647 yd3

Date Last Dredged: October 30th, 2019         Avg. Quantity/Year: 54,918 yd3

 

SURVEY DATA

Date Surveyed: May 11th, 2020

Water Surface Elevation: 667.8

Low Control Pool Elevation: 666.5

Net Difference: +1.3’

5 Day River Forecast: Slight Decline

 

DREDGING DATA

Recommended Channel Width: 450 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 76,493 yd3

Type of Dredge: Government Hydraulic

Proposed Dredging Date: May 17th, 2020

Estimated Duration: 10 dredging days

Justification for Dredging: The navigation channel 200’ between the 9.0’ and closed between 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 a dredging manager at 651-290-5155.

 

 


Dredge Notice 20-14 Crats Island

Published May 14, 2020

DN 20-14                                           DREDGING NOTICE

                                              U.S. ARMY CORPS OF ENGINEERS

                                                            ST. PAUL DISTRICT

 

NOTICE DATE: May 14th, 2020                               DREDGING CATEGORY: Imminent

MEETING DATE: If requested                                 MEETING TIME:

BOAT REQUIREMENT:                                          MEETING LOCATION:

DREDGE CUT NAME: Crats Island                                    RIVER MILE: 758.8 – 759.3

 

HISTORIC DATA

Frequency: 80%                                              Avg. Quantity/Job: 68,647 yd3

Date Last Dredged: October 30th, 2019         Avg. Quantity/Year: 54,918 yd3

 

SURVEY DATA

Date Surveyed: May 11th, 2020

Water Surface Elevation: 667.8

Low Control Pool Elevation: 666.5

Net Difference: +1.3’

5 Day River Forecast: Slight Decline

 

DREDGING DATA

Recommended Channel Width: 450 feet

Recommended Dredging Depth: 12 feet

Estimated Quantity: 76,493 yd3

Type of Dredge: Government Hydraulic

Proposed Dredging Date: May 17th, 2020

Estimated Duration: 10 dredging days

Justification for Dredging: The navigation channel 200’ between the 9.0’ and closed between 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 a dredging manager at 651-290-5155.