IN CASE OF EMERGENCY call 911 (state that you are calling from Waterton Lakes National Park).
Cell phones are not always reliable in the backcountry.
Phone: 1-888-WARDENS (927-3367).
The reservation service is available at reservation.pc.gc.ca or 1-877-RESERVE (1-877-737-3783).
Waterton Lakes National Park
Waterton Park, AB