Wade Galloway, who was 37, was killed Saturday at Waterton Lakes National Park near the United States border.
The City of Lethbridge says in a statement that the first-term councillor had been with a friend when a wave of snow slid down a mountain.
The friend tried to resuscitate Galloway before going for help.
Searchers have not been able to recover his body because of bad weather and blowing snow.
Galloway, a married father of two children, was elected to Lethbridge city council last fall.
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