Explanatory Note Regarding the Practice of CHS on the Communication of Hazards to Navigation
CHS may receive new information pertaining to navigation from various sources. All information is assessed to evaluate its quality and determine if it is a potential hazard to navigation.
Contribute with your experience
The International Hydrographic Organisation would like to learn about the needs of users of information about currents, tidal flow and river flow. They have an online User Requirements Survey Questionnaire.
Low Water Levels on the Great Lakes
Water levels in the Great Lakes are below their all-time averages and below last year's levels . The water levels are below the level of Chart Datum for Lake Superior (-0.3 metres), and Lakes Michigan and Huron (-0.4 metres).
Below average water levels in the Great Lakes are expected to continue into the summer months, according to the forecast prepared by Environment Canada and the United States Army Corps of Engineers. Mariners should exercise extreme caution while navigating in the Great Lakes, especially during periods of strong winds when water levels can rise or fall significantly very quickly.
Consult Sailing Directions booklet CEN 300 - General Information, Great Lakes for more information on water levels and for a list of voice-announcing water level gauges in the Great Lakes area visit the website: http://www.waterlevels.gc.ca/C&A/tidal_e.html
Eliminating Canada – U.S. ENC Overlaps in the Great Lakes
To comply with internationally agreed practices, Canada and the United States of America have agreed to eliminate overlapping coverage of Electronic Navigation Charts (ENCs).
BSB Raster Chart Registration Status
15-Feb-2013: The maintenance to the BSB raster chart registration server is now complete. Should you experience any difficulties registering your charts, or if you have any questions, please contact us at email@example.com .
The BSB Registration service may be interrupted, from February 6 to 15, 2013
As a result of a server maintenance, the BSB registration system may be only sporadically available from February 6 to 15, 2013. It is anticipated that the system will resume normal service on February 16, 2013. For any question or concerns, please contact firstname.lastname@example.org or 1-866-546-3613.
Eliminating Canada - U.S. ENC Overlaps
To comply with internationally agreed practices, Canada and the United States have agreed to eliminate overlapping coverage of Electronic Navigation Charts (ENCs). The first area affected by the changes includes Juan de Fuca Stait, Haro Strait and Boundary Pass, was implemented December 15, 2011. Canada and the United States will continue to resolve ENC overlaps in the Pacific, Atlantic and Great Lakes regions. This new ENC coverage scheme will result in each country changing their areas of coverage, so that only one country's ENC would be available for any given area at a particular scale.
Termination of Tracings Production and Distribution
On December 31, 2012, CHS will no longer produce and distribute Tracings and the associated website section will be closed. As the result of the improved chart production and maintenance processes, CHS no longer needs to produce Tracings to update its charts, so it will no longer be distributing them.
Low Water Levels in the St. Lawrence: Recreational Boaters and Mariners Are Urged to Use Caution
Fisheries and Oceans Canada has issued a public advisory warning that water levels are lower than average in the Port of Montréal and in the Deux Montagnes lake. For the sector between Montréal and Varennes, water levels are below chart datum.
- Date Modified: