Boaters should carry and navigate with up-to-date nautical charts ( Most charts are marked with latitude and longitude coordinates based on horizontal datum NAD83, however some charts may be based on NAD27 (remember to adjust your GPS unit accordingly).

On the Rideau Canal, nautical charts may be purchased at most lockstations or at the Friends of the Rideau Depot in Merrickville. 

Nautical charts, guides and other publications are available (including by mail) from the Rideau Canal