Fall fishing is good to excellent for Bonneville cutthroat trout throughout the Clear Creek drainage. In addition to Clear Creek, the associated tributaries — Mill Creek, Fish Creek, Shingle Creek and Pole Creek — all have good populations of cutthroat trout. You may also find an occasional tiger trout. A variety of flies, lures and natural baits can produce good to excellent fishing. Note: A portion of Fish Creek was treated in August 2025 with rotenone to remove invasive brown trout before they could expand throughout the drainage and threaten the conservation populations of fish. The target area was approximately 2 miles upstream of the Picnic Creek confluence, as well as Fish Creek, from its confluence with Clear Creek downstream about 3 miles. All other stream reaches within the drainage, including Fremont Indian State Park, were unaffected by the treatment and still have abundant numbers of cutthroat trout. The treated area will be restocked with more fingerling cutthroat in 2026.