Icebreaking and Web Cameras

Positions and Activities of the Canadian Coast Guard units assigned to the Icebreaking Services


Daily Ice Charts

Guide to interpretation of ice codes and color codes
(Canadian Ice Service - Environment Canada)

Particularities in Quebec

Icebreaking Services and Escort

Ice-route assignment: Facilitates the transit of marine traffic in ice-covered waters, and escorts commercial vessels experiencing transit difficulties due to ice conditions in the Estuary and Gulf of St. Lawrence.

Flood Control

Preventing ice-jam formation: Breaking the ice ensures it continues to move with a river’s flow

Ice Operations Centers

St. Lawrence;
Great Lakes and Arctic

St. Lawrence & Great Lakes - December to May
Arctic - June to November
(subject to change depending on ice conditions)
7 days a week / 24 hours a day

Information on icebreaking operations
Telephone: 514-283-1745
Fax: 514-283-1818

Information on ice conditions
Telephone: 1-855-201-0086 or 514-283-1752
Fax: 514-283-1818
E-mail: or

Mailing address:

Montreal Ice Centre
Canadian Coast Guard
5th floor, 105 McGill
Montreal, QC
H2Y 2E7


December to May
(Subject to change depending on ice conditions)
7 days a week / 24 hours a day

Telephone: (709) 772-2078

Facsimile: (709) 772-5369
(902) 426-4483

Telex: 016-4530

E-mail for 24 hour ice assistance:

E-mail for general inquiries:

Mailing address:

P.O. Box 5667
St. John's, Newfoundland
A1C 5X1