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: 10-14-2014

South Boulder Creek continues to fish well as we head deeper into fall.  Anglers fishing smaller dries, mainly BWO patterns have been doing very well.  At just over 90 cfs, the flow is perfect for fishing dry flies!  Right now we are seeing most anglers having success later morning, early afternoon, and right at dusk.  The canyon needs to warm up a bit before the bite is on.  Road work on Flagstaff is keeping traffic down as well.

Dries: Rocky Mountain Mint (BWO, 18-20), CDC Comparadun (BWO), Film Critics (BWO), Sparkle Dunns (BWO).

Nymphs: Juju Baetis (purple 18-20), Rojo midges (18-20), Tailwater Tiny’s (Olive), Cheesman Emergers.

Report Statistics
4/5Time on Water: 6
Number of Anglers:
Hoook Ups:
Fish Landed:
Weather Experienced

Wind Conditions: Calm
Precipitation: None
Water Observations

Water Temperature:
Flow Level: 90 CFS
Runoff? Clear
Zach Lass

Report Submitted By: Zach Lass

South Boulder Creek Water Flow Graphs