April Fishing Report: Colorado River, Roaring Fork & Frying Pan — Glenwood Springs 2026
Spring Conditions on the Colorado, Roaring Fork & Frying Pan Rivers
As we leave winter behind and move into spring, we're experiencing the classic Roaring Fork Valley weather pattern — warm, clear days followed by rain or snow and cooler temperatures. With a low-moisture winter behind us, flows from the Frying Pan are running well below average, which is carrying through to the Fork and the Colorado.
Spring conditions on the Colorado River are shaping up nicely, provided you hit the right window of clear water. A few warm days can quickly add color from early runoff, but when flows stabilize and visibility improves, fishing can be excellent. The key right now is timing — check flows before you head out and be ready to adjust your approach based on what the river gives you.
Fish are coming out of winter in a highly opportunistic feeding mode. With limited food over the colder months, trout are willing to eat if you can get flies in front of them. This makes early spring one of the more forgiving times of year — if you're dialed in on presentation and depth.
Hatches & Food Sources
Bug activity is already underway and can be surprisingly strong for early April:
- Midges are the most consistent hatch right now, occurring daily and forming the backbone of the food supply. Look for subtle surface activity, especially late morning into the afternoon.
- Blue-Winged Olives (BWOs) are showing up well on cooler, overcast days and can bring steady dry fly action when conditions align.
- Caddis are beginning to appear in good numbers and will become increasingly important as afternoon temperatures warm through the month.
When conditions line up, these hatches can overlap and offer exceptional fishing across all three rivers.
Recommended Fly Patterns
Based on current conditions, here's what's working:
- Zebra Midges — #18 to #22
- BWO Nymphs and Emergers — #18 to #22
- Small Caddis Patterns — #16 to #18
- Egg Patterns — effective where water has a stain or flows are fluctuating
- Pat's Rubber Legs — excellent as a lead fly for locating fish in off-color water
Our recommended rig in stained or fluctuating water: run an egg pattern or Pat's Rubber Legs as the lead fly with a midge or small BWO as a dropper. This combination covers multiple feeding zones and has been consistently productive this week.
Stop in at Glenwood Springs Outdoors and we'll set you up with exactly what's working right now. You can also browse our current fly inventory online.
Streamer Fishing
Streamer fishing has been very productive when the water is colored up. During off-color or slightly dirty conditions, fish rely more on movement and silhouette than on precise imitation — and larger, predatory trout become noticeably more aggressive. Stripping streamers through deeper runs and seams can produce some of the best fish of the day, including the browns that are otherwise difficult to target on the nymph.
Spawning — Please Protect the Fishery
Rainbow trout are currently spawning throughout the system. Keep an eye out for redds — the gravel nests where fish are actively spawning — and avoid wading through or fishing directly over them. Additionally, tributary creeks throughout the Colorado drainage should be avoided, as many are closed or functionally off-limits during spawning season. These areas are critical for reproduction and the long-term health of the fishery.
Bottom Line
There is excellent fishing available right now — hungry fish, low angler pressure, and multiple hatches coming on. The bigger Colorado River water is particularly worth your attention. It's often overlooked in favor of the Frying Pan and Roaring Fork, but it's producing some of the best fishing of the early season.
Drop by the shop at 831 Grand Ave, Glenwood Springs and we'll point you in the right direction. Interested in a guided trip? Book a guided float or wade trip with our experienced local guides who are on the water every day.
