Winter Fly Fishing on the Upper Colorado River Near Kremmling

Welcome to the Upper Colorado Near Kremmling, where the trout are hungry, and the water’s as wild as your casting arm! Flowing at a mellow pace between Kremmling and Parshall, this section is a fly fisher’s dream with its mix of slow runs, gentle riffles, and deep pockets perfect for sneaky nymphing or swinging streamers.

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The Colorado River near Kremmling in March offers early spring vibes with cold water, low flows, and trout still in winter mode. But don't be fooled, this river holds potential for trophy fish if you’re patient and persistent. As the snowmelt begins, the water level remains low, and the fish aren't in their most aggressive state—yet. Midges and Baetis (BWO) are showing up, so if you time it right, you can hook into some hungry fish looking for a meal before the water warms too much.

The key is precision fishing. Nymphing is your best bet with small patterns, and long drifts in deeper pockets will bring the most success. Dry fly fishing? Possible if you get lucky with a hatch, but don’t expect consistent surface action. If you’re after a challenge, Kremmling’s stretch of the Colorado River is a beautiful, yet fickle fishery—perfect for those who like the solitude of the high country and are up for a technical approach.

Conditions Summary

• Flow Rate: 150-200 CFS (Low, steady)
• Water Temperature: 34-38°F
• Clarity: Clear—very visible fish
• Best Times: Late morning to mid-afternoon
• Star Rating: ⭐⭐ (2/5 – Cold and low, but good potential for those willing to work for it)

River Flow Chart

Source: Colorado DWR River Station Reports

Colorado River Hatch Chart

Top Flies for the Week

• Dry Fly: Blue Wing Olive (#18-22) – Ideal on overcast afternoons when Baetis hatches are likely.
• Nymph: Pheasant Tail (#16-20) – Excellent for imitating Baetis nymphs in deep pools.
• Streamer: Mini Leech (#8-12) – Best fished slowly in deep runs or undercut banks.

Tips for Fly Fishing the Colorado River Near Kremmling in March

Seasonal Tip

Fish slow and deep—trout aren’t moving aggressively yet, so focus on deep, slow-moving water with precise casts.

Dry Fly

Dry fly fishing is spotty, but watch for Baetis hatches on overcast days.

Nymphing

Nymphing is your best option—use small midges and Baetis patterns for deep, slow presentations.

Streamer Fishing

Not great right now, but a slow drift of a mini leech might trigger a fish in the right spot.

Access Points

Pumphouse Recreation Area

• Description: Main access point with a boat ramp, parking, and camping facilities.
• Why Fish Here: Easy access to deeper pools and riffles.
• Locals’ Rating: ⭐⭐⭐⭐

Radium Area

• Description: More technical water, less pressure.
• Why Fish Here: Deeper pockets and undercut banks are worth the hike.
• Locals’ Rating: ⭐⭐⭐

Kremmling Bridge Access

• Description: Urban section with easier access but more fishing pressure.
• Why Fish Here: Great for quick trips when you’re short on time.
• Locals’ Rating: ⭐⭐⭐

Local Regulations and Notes on Landowner Rights

• Artificial flies and lures only in most sections.
• Respect private property—check for posted signs, especially near Kremmling.
• Flows are low—stay light on your feet and avoid spooking fish.

Kremmling’s stretch of the Colorado River is a hidden gem, but it requires patience and precision. If you can time it right, you might just land a trophy—but it’s definitely not for the faint of heart.

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