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South Boulder Creek

South Boulder Creek has to be one of the most scenic rivers within a half hour of downtown Boulder. This creek starts up in the Indian Peaks near the Moffat Tunnel and gains momentum on its journey towards the cool deep waters of Gross Reservoir. Below Gross Reservoir, South Boulder Creek becomes a great tailwater flowing through the Walker Ranch open space. This area is the most popular section of the creek due to the great hatches and consistent flows through the summer months. The access to this section is fairly easy taking visitors up and over Flagstaff Mountain, onto a dirt road, and into the wilderness.


There is no road following the creek so if you are looking for some solitude this is the spot. The aquatic insect activity in this part of the creek is incredible, it sees hatches of Caddis, BWO’s, PMD’s, Midges and great Terrestrial fishing.  South Boulder Creek might be your best chance for a big wild brown in Boulder County.  Every year anglers routinely catch browns in excess of 18 inches. The river heads east through some public and private water before dumping into Eldorado Canyon State park. After the plunge pools of Eldorado, the creek mellows out upon entering the flats of Boulder and eventually joins Boulder Creek.


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Fishing Report Date: 05-30-2016

Finally the flows have come up.  Now around 50cfs, SBC is back up and running.  The fish have spread out and are on the feed big time.  Don’t look over the shallow riffles.  A dry dropper rig will pick up nice fish in these stretches.  The deeper stuff is still holding more fish, but they will continue to spread out in the coming days.  I fished both nymph rigs, dry dropper, and single dry and all did well.  Midges, BWO, and a few caddis around in the late afternoons and evenings.  Anglers that stick around will be rewarded with good dry fly fishing.

For nymphs, smaller rubber legs, twenty inchers, iron lotus, jigged assasin’s, and psycho princes all did well. For dries, try BWO variations like the film critic to turn fish.

I didn’t fish any streamers, but small olive/black streamers can turn some nice fish this time of year.

Very glad to see this flow finally on the rise.

Report Statistics
4/5Time on Water: 4
Number of Anglers: 1
Hoook Ups: 12
Fish Landed: 10
Weather Experienced

Wind Conditions: Calm
Precipitation: None
Water Observations

Water Temperature:
Flow Level: 50 CFS
Runoff? Clear
Nick Camusi

Report Submitted By: Nick Camusi

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South Boulder Creek Water Flow Graphs