The links below provide download access for a new tidal current atlas for the Salish Sea in PDF format. This new atlas follows the same basic structure and function of the 1984Â DFO Current Atlas Vol 3.
The updated tidal current maps are generated using Matlab and the tidal model of Foreman et. al. (2004). The first (as of January 2026) Volume (1) covers the same geographic region of the original, including Victoria, the San Juan Islands, the Gulf Islands, and the southern Strait of Georgia. Other volumes will follow.
To use these new tidal current maps, download the Atlas file and the Calendar Lookup Table file for the year of interest. For each hour of the year, the tables indicate which map to refer to for most appropriate tidal current prediction. These maps are not for navigational purposes and provide only an approximation to the tidal current patterns.
Disclaimer:
The use of data sourced from the Canadian Hydrographic Service in this product shall not be construed as constituting an endorsement by CHS of this product. This product does not meet the requirements of the Charts and Nautical Publications Regulations, 1995, (repealed in 2020, prior version) under the Canada Shipping Act, 2001. Official CHS charts and publications, corrected and up-to-date, must be used to meet the requirements of these regulations.
Salish Sea Tidal Current Atlas - Volume 1 This volume covers the region from Victoria to the Southern Strait of Georgia. The PDF file is 491 pages and 440 MB.
Calendar Lookup Tables: A set of calendar based lookup tables to link dates and times to maps found in the atlas, year specific.
All feedback or comments should be directed to the author, Dr. Richard Dewey.