Boulder Creek Fishing Report Header


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 up to 18″+.


Interested in fishing this watershed? Let us know and we will pair you up with one of our local experts.

Book a Guide


Latest Guide Report

Fishing Report Date: 09-09-2016

A Great B.C. Brown.

Boulder Creek has remained strong & Dry/Dropper still reigns supreme. Chubbies, Hoppers, and Stimmies are provoking strikes on the surface while cdc tung PT’s, Brush Hogs, Torpedos, Micro Mays. and Tung headed midges are accounting for loads of fish below. Recent cool weather has improved middle day activity, including hatches. With cloudy afternoons we continue to see increasing numbers of BWO’s along with a few lingering Drakes, Red Quills, Caddis and Yellow Sallies. With the larger Mays try a Film Critic, Flag Dun, or Larger Adams on the surface! Caddis flies are still a great choice before dark.

“Mostly caught on a Stimmie and Frenchie trailed. Fishing was good.  It has been great this whole week!!. Water level for Castle Rock is perfect. Not as many crowds as I expected either.  Other good nymphs include pheasant tails, brush hogs, and tailwater tiny’s in sz 18.  Cloud cover can produce good single dry fly fishing Adam’s and other smallish mayfly patterns.” ~ Wallace

Adam Guide Trip“Well Boulder Creek is definately still producing some great fish and they are very eager to eat. We used a dry dropper with a chubby Chernobyl and a brush hog. But we also got several strikes on a tung torpedo, pheasant tail and frenchie. Nymph wise we we stuck with size 16 to 18. We didnt get much of any activity on anything smaller than that. And dry flies we stuck with size 14 and 16.” ~Adam


Top 5 Dries for Boulder Creek Right Now

  1. Parachute Adams sz 12-20
  2. Purple Haze sz 16-18
  3. Hoppers sz 10-14
  4. Chubby Chernobyl sz 12-16
  5. Crystal Stimulator sz 12-16

Top 5 Nymphs for Boulder Creek Right Now

  1. Frenchie sz 16-18
  2. Pheasant Tail sz 12-18
  3. Tung Torpedo sz 16-18
  4. Brush Hog sz 16-18
  5. Tailwater Tiny sz 18


Our proffessional guide team fishes Boulder Creek more than anyone. Take one out for a day and learn some of the tricks that will make you a B.C. expert.

Report Statistics
4/5Time 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

Report Submitted By: Rob Kolanda

Boulder Creek Water Flow Graphs