For most geographical names there is only one official form. However, certain geographical names require presentation in both official languages of Canada on federal maps.
Pan-Canadian names: 81 large and well-known Canadian features and areas were designated in Treasury Board Circular 1983-58 (e.g., Lake Winnipeg / Lac Winnipeg). In October 2008, the Geographical Names Board of Canada approved a new list which incorporates changes due to legislation since that time. The changes are listed below :
As of 1 April 1999, the following names are no longer in use in the Northwest Territories and Nunavut.
Keewatin, District of / District de Keewatin
Mackenzie, District of / District de Mackenzie
On 6 December 2001, the Governor General of Canada proclaimed the constitutional amendment changing the name of the Province of Newfoundland to Newfoundland and Labrador.
Effective 1 April 2003, the name of Yukon Territory became Yukon, as per the Yukon Act (c. 7 SC 27 March, 2002).