Dolores River: Slick Rock Canyon
Dolores River: Slick Rock Canyon — Fishing Report for April 24, 2026
Quick Stats
Flow: 4 CFS | Trend: Stable | Fishability: Unfishable | Weather: Mostly Sunny, High 69°F
The Bite
This is a hard report to write, because Slick Rock Canyon in a good April is one of the most beautiful and productive stretches of fly water in Colorado. This is not a good April. The gauge near Bedrock is reading 4 CFS — a trickle — and has been locked there for at least ten days. The seasonal outlook expected 50–200 CFS with McPhee releases supporting both wading and floating. Instead, the reservoir has almost nothing to give: snowpack across the southwest basin came in at roughly 10% of normal this year, one of the most severe deficits in recent memory. Even with water-year precipitation sitting near 88% of normal, the lack of snowmelt means McPhee never built the storage needed to support meaningful spring releases. The river is paying the price.
At 4 CFS, the canyon pools are reduced to isolated puddles connected by barely-moving riffles. Water temperature is already at 60°F in late April — warm for this time of year, and a sign of how little cold snowmelt is entering the system. Brown trout that would normally be spread across the canyon are concentrated in whatever deep water remains, stressed and unlikely to feed actively. The BWO hatch that makes this section legendary in April has no real stage to perform on. Attempting to fish this water risks further stressing fish that have nowhere to retreat.
The honest call here: skip Slick Rock Canyon this weekend. This isn't a "tough conditions" situation where adjusting your tactics gets you into fish — it's a flow crisis. The Dolores River below McPhee is one of Colorado's most flow-dependent fisheries, and right now it simply doesn't have the water. If you've been dreaming of a packraft float through the red rock canyon, hold that plan for a year when the snowpack cooperates.
What to Fish
Pattern recommendations are suspended for this report — conditions don't support a fishable presentation at current flows. For reference, when flows recover to the 50+ CFS range, these would be the go-to patterns:
- Parachute BWO #18–20
- CDC BWO Emerger #20
- Sparkle Dun (olive) #18–20
- Pheasant Tail Nymph #18–20
- Griffith's Gnat #20
- Elk Hair Caddis (tan) #16
Tactics & Rigging
There's no productive rig to recommend for 4 CFS. If you're in the area and determined to explore the canyon on foot — it is genuinely stunning country — keep your rod in the tube and enjoy the desert wildflowers and canyon walls. The cactus blooms in late April are worth the drive on their own. If flows recover meaningfully later this season, a dry-dropper setup with a Parachute BWO over a CDC Emerger dropper 16" below will be the first rig to reach for in the glassy canyon pools.
Access & Logistics
The remote nature of Slick Rock Canyon — float access primary, limited walk-in at road crossings — makes a low-flow visit even less practical. There's no point running the shuttle for a float that isn't possible, and hiking in to fish isolated puddles isn't a good use of the trip. Redirect your energy to better-supported water this weekend. Verify current regulations with CPW before fishing any Colorado water.
The Dolores River's long-term health depends on advocacy for minimum instream flows. Organizations like Dolores River Anglers and Trout Unlimited are working on exactly this issue — worth supporting if this fishery matters to you.
Looking Ahead
Sunday's forecast brings rain showers to the region, but scattered precipitation won't move the needle on a flow deficit this severe — meaningful recovery would require a policy change in McPhee releases, not a weekend storm. Keep an eye on McPhee storage and release data through the spring; if the reservoir receives unexpected late-season inflows, conditions could shift quickly.