Prohibition of travel: By any custodial group in avalanche terrain described by the Avalanche Terrain Exposure Scale (ATES) as class 2 and 3.

Issued: November 01, 2019

Prohibition of travel by any custodial group* in avalanche terrain described by the Avalanche Terrain Exposure Scale (ATES) as class 2 and 3.

Effective date: Nov 15 to April 30

Activities prohibited: 
Pursuant to section 7(1) of the national parks general regulations,  travel by any custodial group* in avalanche terrain described by the Avalanche Terrain Exposure Scale (ATES) as class 2 and 3 is hereby restricted by order of the superintendent, Jasper National Park.

* A“custodial group” means a group affiliated with an institution, where at least one person is below the age of majority and that minor is not in the company of his/her parent or legal guardian. Institutions include but are not limited to schools, Scouts/Guides, churches, clubs, cadets, and community youth programs.

NOTE:

  1. Subject to the following restrictions, authorization for a custodial group to travel in ATES class 2 avalanche terrain may be granted by the Superintendent:
    • The custodial group must be led by a mountain, alpine or ski guide certified by the Association of Canadian Mountain Guides or International Federation of Mountain Guide Associations.
    • Maximum group size is nine (9) persons plus certified guide(s).
    • Authorization for travel by a custodial group in class 2 terrain will only apply when the certified guide has rated the slope specific snow stability of that area to be ‘GOOD’ or ‘VERY GOOD’.
  2. Travel by a custodial group in areas of the Park designated as ATES class 3 avalanche terrain, is prohibited.
  3. Travel in ATES class 1 avalanche terrain is not restricted.
Avalanche Terrain Exposure Scale (ATES)
Class Description Terrain criteria
1 Simple Exposure to low angle or primarily forested terrain. Some forest openings may involve the run out zones of infrequent avalanches. Many options to reduce or eliminate exposure. No glacier travel.
2 Challenging Exposure to well-defined avalanche paths, starting zones or terrain traps; options exist to reduce or eliminate exposure with careful route finding. Glacier travel is straightforward but crevasse hazards may exist.
3 Complex Exposure to multiple overlapping avalanche paths or large expanses of steep, open terrain; multiple avalanche starting zones and terrain traps below; minimal options to reduce exposure. Complicated glacier travel with extensive crevasse bands or icefalls.

Further information on hiring guides, obtaining permits, and a complete listing of rated trips can be found at Parks Canada Information Centers or at: www.pc.gc.ca/avalanche