Open 9 a.m. to 6 p.m. daily

Report Date: 10/28/2026

Conditions:

Releases from Cheesman Reservoir have bumped flows up to 96 cfs, filling out the canyon’s deep plunge pools, granite ledge slots, and boulder-choked runs. While this increased flow provides trout with additional overhead depth cover compared to the lower water conditions that we've been seeing lately, Cheesman Canyon remains a ultra-technical, sight-nymphing fishery. Resident trout are heavily educated and selectively picking off food along primary current seams, pocket-water eddies, and deep drop-offs. Autumn brown trout continue staging for the spawn; anglers must remain vigilant to identify shallow gravel tailouts, strictly avoid targeting fish on redds, and keep all fishing pressure focused on deep holding structure.

Guide Report:

JOSH HENEY - 10/24/26  Very tough day with low flows, still managed to get a few fish in the net!

Weather:

Short-term

High-country autumn weather over the next 3 days will feature daytime highs reaching the upper 50s to low 60s under partly cloudy skies. Crisp morning starts in the 30s will quickly give way to midday sun, while thermal canyon breezes of 8 to 14 mph pick up by early afternoon, creating a light surface chop that helps break up line shadows across glassy pool tails.

Long-term

The 10-day regional outlook points to a steady seasonal drop across the South Platte drainage. Highs will gradually level off in the upper 40s and 50s, with overnight temperatures routinely dipping into the 20s to bring hard morning valley freezes. Reliable bottom-release flows out of Cheesman Dam will keep water temperatures stable, maintaining consistent midday feeding windows despite cooling ambient conditions.

Hatches:

Black, cream, and olive midges remain a primary dietary staple, emerging steadily along slow foam lines through late morning and afternoon. On overcast days, Blue-Winged Olives pop selectively along quiet inside seams, offering brief dry-fly opportunities. Terrestrial activity has effectively wound down for the season, locking trout focus onto subsurface nymphs and pupae.

Tactics:

Even with flows nearly doubling to 96 cfs, Cheesman trout remain notoriously selective and easily spooked. Stealth is paramount: keep a low profile, tread lightly along the granite banks, and avoid casting shadows over holding water. Lengthen your leaders to 10–12 feet tapered down to 6X fluorocarbon tippet to eliminate micro-drag across multi-directional canyon currents. Ditch heavy plastic indicators for micro-yarn, wool, or putty indicators that land softly without startling wary fish in clear glides. Focus your presentations on the leading edges of deep plunge pools, shaded pocket water, and primary channel drop-offs where non-spawning trout are actively feeding.

Tips:

This is an area where we offer guided fly fishing trips. We are one of two outfitters permitted to operate in Cheesman. There is no better way to learn an area like Cheesman Canyon than hiring one of our Orvis-endorsed professional guides!