Water Levels at Your Fingertips!

The Canadian Hydrographic Service (CHS) provides Canadians with timely information and updates to current water levels activity including tidal prediction data – so you can prepare, be proactive, and chart your own course safely.

Here are two simple, easy to access, and affordable tips on how you can get connected:

1. Water levels at your fingertips! (connecting toll free)
   

   Canadian hydrographic service (CHS) is connecting Canadians to water levels observations for the St. Lawrence River (between Montréal and Sept-Iles) and also to continuous tidal data prediction for British Columbia, Quebec, New Brunswick, Nova Scotia, Prince Edward Island and Newfoundland and Labrador.

   By calling 1-877-775-0790, you can find out what you need to know for a safe journey.

   This service will prompt you to find your choice of "on the spot" information.

   Operating the Tidal data "Water levels at your fingertips!"

   CALL 1-877-775-0790 (toll free).

   Message of welcome (For service in English press " 9 ")

   To obtain tidal predictions in Canada press " 1 ".
   
   1. Quebec (10 regions)
   2. New Brunswick (9 regions)
   3. Nova Scotia (10 regions)
   4. Prince Edward Island (5 regions)
   5. Newfoundland and Labrador (10 regions)
   6. British Columbia (12 regions)
   

   To obtain water levels observations for the St. Lawrence River press " 2 ".

   Press " 1 " to choose the observation station number.

   • 16005 Sainte-Anne-de-Bellevue – Lac-des-Deux-Montagnes
   • 15520 Montréal (Jetée n°1)
   • 15660 Varennes
   • 15930 Sorel
   • 03360 Trois-Rivières
   • 03345 Batiscan
   • 03300 Portneuf
   • 03248 Port de Québec (Vieux-Québec)
   • 03057 Saint-Joseph-de-la-Rive
   • 02780 Sept-Iles

   • 15330 Lac Saint-Louis – Pointe-Claire
   • 15540 Montréal (Frontenac street)
   • 15780 Contrecœur
   • 15975 Lac Saint-Pierre
   • 03353 Bécancour
   • 03335 Deschaillons (Cap-à-la-Roche)
   • 03280 Neuville
   • 03100 Saint-François (Île d’Orléans)
   • 02985 Rimouski
   • 01970 Cap-aux-Meules

   Press " 2 " to get more information about SINECO network and to obtain the list of water levels observations stations numbers for the St. Lawrence River.

   To obtain the complete list of regions available on this system by fax press " 3 ".

   Press " # " to return to the main menu.

   Please contact our CHS office in Mont-Joli at (418) 775-0502 (during office hours 08:00 to 16:00) or by fax at (418) 775-0654 or by e-mail to chsinfo@dfo-mpo.gc.ca to report any problems.
2. The Great Lakes

   The Canadian Hydrographic Service operates a network of announcing gauges at its stations on the Great Lakes and St. Lawrence River. The following stations can be accessed by telephone at the number listed:

   Lake Superior
   at Thunder Bay - (807) 344-3141
   at Rossport - (807) 824-2250
   at Michipicoten - (705) 856-0077
   at Gros Cap - (705) 779-2052

   
   

   St. Marys River
   above the lock at Sault Ste Marie - (705) 949-2066
   below the lock at Sault Ste Marie - (705) 254-7989

   
   

   North Channel
   Thessalon - (705) 842-2215
   at Little Current - (705) 368-3695

   
   

   Georgian Bay
   at Parry Sound - (705) 746-6544
   at Midland - (705) 526-6413
   at Collingwood - (705) 445-8737

   
   

   Lake Huron
   at Tobermory - (519) 596-2085
   at Goderich - (519) 524-8058

   
   

   St. Clair River
   at Point Edward (Sarnia) - (519) 344-0263
   at Port Lambton - (519) 677-4092

   Detroit River
   at Amherstburg - (519) 736-4357

   
   

   Lake Erie
   at Bar Point - (519) 736-7488
   at Kingsville - (519) 733-4417
   at Erieau - (519) 676-1915
   at Port Stanley - (519) 782-3866
   at Port Dover - (519) 583-2259
   at Port Colborne - (905) 835-2501

   
   

   Lake Ontario
   at Port Weller - (905) 646-9568
   at Burlington - (905) 544-5610
   at Toronto - (416) 868-6026
   at Cobourg - (905) 372-6214
   at Kingston - (613) 544-9264

   
   

   St. Lawrence River
   at Brockville - (613) 345-0095
   above the lock at Iroquois - (613) 652-4426
   below the lock at Iroquois - (613) 652-4839
   at Morrisburg - (613) 543-3361
   at Cornwall - (613) 930-9373
   at Summerstown (Lake St. Francis) - (613) 931-2089

   When one of these gauging stations is called, the caller will be asked to press 1 on the touch-tone telephone for English or 2 for French. If a touch-tone phone is not used, the message in English will start after a few seconds and the message in French will follow. The message gives the present water levels in metres above chart datum at that station, followed by the high and low water levels recorded during the previous 12 hours. The height of the presently adopted chart datum for that station is then given in metres above International Great Lakes Datum 1985 (IGLD 1985).

   Pressing 1 or 2 at any time during the message will restart the announcement from the beginning and pressing 0 at any time will end the call. Please contact our Burlington office at 1-877-247-5465 (during office hours 08:00 to 16:00) or by fax at (905) 336-8916 or by e-mail to CATCWL@dfo-mpo.gc.ca to report any problems or for additional information of water levels on the Great Lakes and Hudson Bay.