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Boulder Creek Fishing Report

Our Boulder Creek fishing report will give you an idea of what flies to use and general conditions you can expect. Boulder Creek is one of Boulder’s most prized possessions, running from Barker Reservoir through town past the campus of CU and out into the flats of Colorado. From start to finish this is a fine trout fishery full of wild browns, rainbows, and even some colorful brookies up towards the town of Nederland. If you can really devote some time to fishing the creek there are even a few cutthroats to be found. Go for the Boulder Creek grand slam!

The creek is full of opportunistic fish that are eager to take a dry fly, so take advantage of the great caddis, blue wing olive and terrestrial fishing. The midges that call Boulder Creek home are active all year and are always a safe bet come the colder months of the year. This is a great chance to get out and test some of those midge patterns that you have been drooling over all winter. The caddis hatches on the creek makes for some of the best evening fishing Boulder has to offer.  A simple dry fly with a dropper hanging off the back will light up fish all day long and into the night.

The creek fishes well from start to finish, hitting bigger browns outside of town, or even in town, more rainbows than you can stick in one day up in the canyon and brookies that will keep you grinning until dark near the upper stretches of the creek. The fish size averages around 8in, but there are plenty of larger fish to be had in the creek.

Latest Guide Report

Fishing Report Date: 05-20-2015

With the snow falling there was no shortage of moisture in the air, but Boulder Creek was still producing a lot of activity.

We headed up the Canyon past Boulder Falls and right into the heart of Castle Rock. The water levels are up but the visibility is still pretty clear and with the added overcast the fish were less aware of our presence. We fished the slow water as much as possible and even had a few strikes in faster water.

Later we moved to multiple locations above the falls and had some luck. But where we had the most action was below the falls and below the tunnel. Even with the muddy, fast moving water the fish were ready to eat and looked quite healthy.

The most productive patterns above the falls were rainbow warriors, two-bit hookers, pheasant tails and occasional hits on pats rubber legs. Try to stay with smaller sizes, less than 18. Dry fly action was pretty slim.

Below the falls we used big bright flies. San Juan worms, pat rubber legs, pheasant tails and hare’s ears. Get out and fish in this cold weather and enjoy the craziness of Colorado!

Adam guide Trip Boulder Creek

Boulder Creek continues to fish well right through run-off

Report Statistics
3/5Time on Water:
Number of Anglers:
Hoook Ups:
Fish Landed:
Weather Experienced

Temperature: 40-50
Wind Conditions: Light-Breeze
Precipitation: Snow
Water Observations

Water Temperature:
Flow Level: 275 CFS
Runoff? on
Adam Spoerl

Report Submitted By: Adam Spoerl

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Boulder Creek Water Flow Graphs