The Left Fork Fire burned heavily through the Kanab Creek drainage area in early summer of 2022. Summer rainstorms washed large amounts of ash into the stream, killing all fish in Kanab Creek. The upper East Fork Sevier River, from Kanab Creek downstream to Tropic Reservoir, appears to have also suffered large losses of fish due to the ash flow. The East Fork and all tributaries upstream of Kanab Creek were unaffected by the fire and still have abundant trout.