Colorado River | Kremmling | River Report

FLOW
See Chart Below
WIND
19 mph
TEMP
33 F
HIGH/LOW
49/31 F

Colorado River near Kremmling – April Fly Fishing Report: As of early April, the Colorado River near Kremmling is exhibiting favorable fishing conditions. Recent reports indicate that flows are steady, providing excellent opportunities for both wade and float anglers. Water temperatures are in the 40s°F, which has stimulated increased trout activity. Anglers are observing consistent midday hatches of midges and blue-winged olives (BWOs), leading to productive nymphing and occasional dry fly opportunities. Effective fly patterns include Pat’s Rubber Legs in black, brown, or olive (sizes 10–14), Tungsten Flashback Pheasant Tail (sizes 14–20), and Sparkle Wing RS2 in grey or olive (sizes 18–22). Additionally, streamer fishing can be productive, with patterns like Baby Gonga in brown trout colors and Slump Busters in olive or black (sizes 4–6) yielding positive results. With the anticipated onset of the Mother’s Day caddis hatch later this month, anglers should be prepared for increased surface activity. Overall, the Kremmling stretch of the Colorado River offers promising opportunities for anglers this April.​

5 Day Outlook

Colorado River’s insect life provides a smorgasbord for hungry trout. AvidMax recommends these key fly patterns:

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THE FISHERY

The Colorado River at Kremmling provides anglers with access to diverse trout waters, where the combination of riffles, deep pools, and stunning canyon scenery creates an exceptional fishing experience.

Fish Species
The Colorado River near Kremmling is home to thriving populations of brown and rainbow trout, with browns being the dominant species. Trout in this section often range from 12-20 inches, with opportunities for larger fish, especially during the fall when brown trout are more aggressive as they prepare for spawning.

Unique Fishing Conditions
This section of the Colorado River offers diverse water conditions, including riffles, deep runs, and slower pools, making it suitable for various fishing techniques. Summer and fall are the best times for fly fishing, with dry fly action peaking during caddis and blue-winged olive hatches. Nymphing with small midges, mayflies, and stonefly patterns (sizes 16-22) is effective year-round, while streamers are especially productive in the fall for targeting larger brown trout. The water clarity and depth make this a great spot for both wading and float fishing.

Access and Regulations
Public access is available through several spots near Kremmling, including the Radium and Pumphouse Recreation Areas, which are popular for wading and floating. This section is managed as Gold Medal Waters, meaning it is regulated for trophy trout, and artificial flies and lures are required. Anglers should practice catch-and-release to help preserve the fishery, especially during the spawning season. Water flows can vary depending on upstream releases, so checking conditions before heading out is recommended.

AvidMax encourages anglers to explore their full repertoire on the Colorado River:

Nymphing

Nymphing allows anglers to target trout feeding below the surface, with or without an indicator, making it an effective technique for covering deep runs and slow pools where fish are actively feeding on subsurface insects.

Dry Fly Fishing

Fishing with dry flies provides the ultimate surface experience, imitating adult insects and offering exciting visual strikes, particularly during hatches when trout are feeding on the water’s surface.

Streamer Fishing

Using streamers mimics baitfish and other larger prey, offering an aggressive approach that can entice bigger, predatory trout, especially when fishing deeper water or fast-moving currents.

Each season on the Colorado River brings unique joys and challenges for AvidMax anglers:

Spring

Spring runoff can raise water levels, making nymphing with stonefly and baetis patterns effective in slower water near the banks. Focus on eddies and deeper pools where trout find refuge from faster currents.

Summer

Summer provides excellent dry fly fishing with strong hatches of caddis, PMDs, and terrestrials like hoppers. Early morning and late evening are the best times for surface action in riffles and along the banks.

Fall

Fall is prime time for targeting large brown trout as they prepare to spawn, making streamers and egg patterns highly effective. Fish deeper pools and structure for the best chance at catching aggressive, trophy-sized trout.

Winter

Winter fishing can still be productive, especially in slower, deeper runs where trout hold during colder months. Nymphing with small midge and baetis patterns is most effective during the warmest part of the day.

We want to hear from you! Have you fished this River or have any advice for fellow anglers?

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