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

Report Date: 10/3/2026

Conditions:

Welcome to October! Stream flows are low and stable at approximately 70 CFS, creating exceptionally clear and low-water conditions throughout the canyon. Water temperatures are holding cool in the upper 40s to low 50s, supported by deep releases from Cheesman Reservoir. The trout are highly spookable and spread across shallow seams, tailouts, and slow pocket water, requiring stealthy approaches and minimal splashing on entry. As we cruise closer to cold weather, expect the "Tailwater tiny" to become the norm.

Weather:

Short-term

The short-term outlook features ideal early fall atmospheric stability with mild day-to-day conditions. Warm, sunny afternoons in the mid-to-upper 60s will transition to crisp, sub-freezing mornings in the canyon. Expect light, shifting afternoon winds that can occasionally knock terrestrial life and foliage into quiet bank-side pockets.

Long-term

As autumn progresses toward mid-October, cooler atmospheric fronts will bring increased cloud cover and sporadic dips into the 40s and 50s. This seasonal drop in water and air temperatures will shift fish into deeper, slower winter-holding runs. Low, clear conditions will likely persist late into the fall season, keeping technical stealth a priority until winter flows fully settle.

Hatches:

Midges remain the primary, consistent food source throughout the day. Early mornings feature residual spinner falls in quiet tailouts and backwaters. As overcast skies or cooler early-afternoon conditions settle in, Blue-Winged Olive (BWO) hatches pick up in frequency. On warmer, windier mid-day periods, terrestrial activity—including small ants, beetles, and hoppers—remains active near steep rock faces.

Tactics:

Focus on delicate presentations using long leaders (9 to 12 feet) paired with fine 5X to 7X fluorocarbon tippet. Sight-nymphing and dry-dropper rigs are highly effective in shallow riffles, tailouts, and softer seams. A classic two- or three-fly nymph setup works best: lead with a subtle attractor or small crustacean/worm pattern to get down, followed by tiny midge or baetis emerger trailers.

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!