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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.

Latest Guide Report

Fishing Report Date: 04-12-2015

With the consistent warmer temperatures along the front range recently, I figured some of the higher watersheds might be waking up a little earlier than usual. I decided to spend some time exploring the Pinecliffe area of S. Boulder Creek. As expected at this elevation, water temps were still a little on the low side, so it seemed like it was still mostly a midge game. The fish seemed to still be holding in slack water behind boulders and along the edge, so a dry-dropper rig was how I approached it. This gives the nymphs time to get down into the deeper pools.

My most successful fly was a #18 brush hog, with a #20 mercury black beauty a close second.
S. Boulder Creek Rainbo April 2015S. Boulder Creek Rainbo April 2015 2

Report Statistics
3/5Time on Water: 1.5 Hour
Number of Anglers: 1
Hoook Ups: 14
Fish Landed: 12
Weather Experienced

Temperature: 40
Wind Conditions: Light-Breeze
Precipitation: None
Water Observations

Water Temperature: 42
Flow Level: 46 CFS
Runoff? Clear
Erik Myhre

Report Submitted By: Erik Myhre

South Boulder Creek Water Flow Graphs