Fly Fishing Reports For Boulder Colorado

We realize that for most folks, fly fishing is a passion you enjoy on the weekends, after work, or when the conditions justify calling in sick! You want to maximize your time when you do get an opportunity to get out to your favorite spot. That’s exactly why we strive to keep our Boulder fly fishing reports up to date more than any other shop in the region. No more spending half of your outing trying to figure out why the fish keep refusing your fly!

Fishing Around Boulder In A Nutshell

Boulder Creek See Full Report

As of 3/25 the canyon is open for business! Everything is wide open all the way to Nederland. Once you get above the falls the water is extremely skinny though, so we’d probably stay lower. Now is a great time to hook into fish that haven’t seen a fly in months in the canyon! Note that there is a lot of construction going on in the canyon during weekdays, so between the runoff coming into the creek and the heavy equipment, you may see some off-color water. The warming trend has brought water temps above 40 and has gotten some of the bugs moving. As a result we’re starting to see increased midge and baetis activity. A few fish have even been willing to play with a dry fly!

Flows are perfect right now for a euro-style rig in the canyon. Stop by and we can show you the basics of how to rig up to feel every take!

Boulder Creek Water Flow Graphs


South Boulder Creek See Full Report

Denver water clamped down the flows bigtime on Mar. 6th, all the way down to 10 CFS. This is going to make things tricky. SBC below gross res wouldn’t be our first choice at the moment, but if you want to hit a tailwater close to home, you’ll have to use stealth, 6x, and a delicate presentation. It will be obvious where the fish are holding as there are limited holding holes. As the warmer weather moves through the section of SBC between 93 and Baseline might be a good option for exploration.

South Boulder Creek Water Flow Graphs

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Clear Creek See Full Report

As of 3/16 the canyon was 95% ice free. There are some remnants of shelf ice on the banks in the deepest parts of the canyon, but it’s essentially entirely ice free. Flows are perfect for euro-nymphing right now. Water temps were creeping up near 50, but fish still seem to be in their winter holding lies. Looks for fish in slack water behind structure or up against the bank in a foot or less of water. Worm, Stonefly, Midge and Caddis imitations are all pulling fish. Note that between the trail construction and runoff coming in off North Clear Creek there is some stain to the water in the canyon.

Clear Creek Water Flow Graphs


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Big Thompson See Full Report

This is the time of year that the Big-T really shines. Bring a good selection of midge dries and nymphs #20 or smaller. Cover water and find feeding fish. 6-7x is a necessity to get the fish to eat. As the warm days continue, the dry fly bite should continue to pick up!

Big Thompson River Water Flow Graphs


Blue River See Full Report

The Blue is the hottest water close to home right now. It’s definitely shrimpacolypse up there! Make sure you have a mysis somewhere in the mix at all times right now. Because of the size of the fish you’ll encounter start with 5x, and downsize from there. Egg Patterns and tiny red Midge patterns should also be a part of your starting lineup.

Blue River Water Flow Graphs