Mammoth Creek

<b>Access:</b> is limited in lower Mammoth Creek by private land that is posted closed to trespassing. Please respect private property rights and obey signs and other postings.
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<b>Fall Fishing Forecast (September – November):</b> Brown trout in the lower reaches of Mammoth Creek (below the campground to the confluence of Asay Creek) get aggressive in the fall as they prepare to spawn and can be effectively caught with various flies (streamers, egg patterns), lures (spinners, Rapalas), and jigs (marabou, tubes). Individual fish spawn at various times, so there will always be a few fish in pre-spawn aggression mode or post-spawn feeding mode. Fishing for cutthroat and tiger trout in the upper reaches (headwaters to the campground, and tributaries) can be good to great as the weather begins to cool, with a variety of flies and lures. Summer sampling found abundant numbers of fish in the upper reaches, with some cutthroat and tiger trout reaching up to 15 inches.
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<b>Notice:</b> The parasite that causes <b>whirling disease</b> is known to occur in Mammoth Creek. <b>Please prevent the spread</b> of whirling disease by thoroughly cleaning mud from your waders after fishing here and letting them dry completely before wading at another location. Do not transport fish or their parts from Mammoth Creek to other waters. <a href="https://wildlife.utah.gov/diseases/whirling" target="_blank">Do your part to keep from spreading whirling disease across the state.</a> <br>