Mohkinstsis | Calgary
Treaty 7, Alberta
January 26, 2026

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In early 2025, we published the  Native Trout Critical Habitat Loss in Southern Alberta  report. This outlined how since habitat protections were implemented for threatened Westslope Cutthroat Trout and Bull Trout, Critical Habitat destruction due to logging operations has been regularly occurring. The report documented losses of riparian (stream-adjacent) Critical Habitat and identified over 100 crossings of Critical Habitat for access roads, none of which had been authorized under the Species at Risk Act.

Erosion at crossings and along access roads, leading to sediment entering streams, is a major problem for native trout, impacting their ability to survive and reproduce.

In the summer of 2025, we conducted stream crossing assessments and Critical Habitat assessments at crossings in the Oldman, Livingstone, Elbow, and Ghost regions. This work was done to validate remote sensing data presented in the report and quantify the scale of erosion and sedimentation issues occurring at crossings. Our new StoryMap summarizes this work.

Erosion and sedimentation issues were common:

• 71% of crossings showing evidence of erosion and/or sedimentation.
• Half of crossings had erosion controls present, and most of those (87%) were failing to some degree.

Check out our newest storymap for details.