South Boulder Creek Fishing Report Header

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: 10-30-2015

South Boulder Creek has been dropped to 9 cfs for the past two weeks. Although it is very fish-able at this flow, I would recommend fishing Clear Creek or Boulder Creek instead. With the low water fish are easily spooked and become more lethargic. If your headed up to South Boulder Creek look for fish to be concentrated in the deeper pools. A typical setup for this low water would be dry-dropper or a single dry depending on the depth of water being fished. For the shallow riffles and pockets, fishing a single dry is going to be the most effective. I would be fishing a 9ft 5x or 6x leader to the dry, with 6x and in some cases 7x fluorocarbon tippet to the nymph.

Recommended Flies:

Dry: Ext. Body BWO 16-18, Parachute Adams 16-18, Peacock Cluster 18-22, CDC BWO 16-18, JC Special 12-14, Tan Chubby Chernobyl 12-16

Nymphs: Rainbow Warrior 16-20, Olive Zebra Midge 18-22, Cheeseman Emerger 18-22, Bead head PT 16-20, Peach Egg 12-14, Jujubaetis 18-22, Copper ribbed RS-2 18-22.

Report Statistics
2/5Time on Water:
Number of Anglers:
Hoook Ups:
Fish Landed:
Weather Experienced

Wind Conditions: Calm
Precipitation: None
Water Observations

Water Temperature:
Flow Level: CFS
Runoff? Clear
Cody Burgdorff

Report Submitted By: Cody Burgdorff

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South Boulder Creek Water Flow Graphs