Blue River Report

Blue River Report

9-14-2026

Flows are still at the standard of 53.9 CFS. Fish are still moody at times, prefering typical tailwater stuff like smaller midges and BWO immitations in natural colors, with little to no flash. The river has been a bit more open in terms of less angling pressure, which has been nice. On weekends however, it can still be a bit busy. Sight fishing continues the best way to target bigger fish. Hatches have been primarily Midges, Caddis and BWOs.


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For dries, use a Sparkle Dun BWO, Hanging Midge, AR's BWO Adult, Parachute Adams, Chubby Chernobyl, Film Critic, Mole Fly, Ms. Tickle Cripple in BWO, Hot Mess Midge, AR's BWO Emerger and a Dry Humper, Hi Viz Beetle, No See Um Hi Vis BWO and Superman Caddis.


For subsurface presentation, use a HDA Variant, BTS Mysis, Jigged Mysis, Simple PTN, Baby Gonga, Barr's Emerger, Sculpzilla, AR's Perdigon, Poudre Pupa, RS-2, Lil Bit, Hogan's S&M Nymph, Juju Baetis, and a Croston's FMJ.

Guide Rating

4/5

Weather Experienced

- Temperature: Lower 70's

- Wind Conditions: Breezy

- Precipitation: 30% chance of rain

Water Observations

- Water Temperature: 44.8 degrees

- Flow Level: 53.9 CFS

- Water Clarity: Near crystal clear

About Blue River Fly Fishing

For Denver area flyfishers, the Blue River, which rests just an hour-and-a-half west of the city off I-70, is an excellent after-work and short weekend option. However, due to its location, it can suffer from crowding.

Despite its location and a good population of trout, not many people consider the Blue their favorite river. However, for those who know the Blue, “Big trout,” “Broken tippet” and “the one that came off,” are all phrases that are commonly heard as those anglers head home from the river.

It hasn’t always been that way; improvements on the Blue over the last four or five years have benefited the fishery. New catch-and-release regulations to strengthen the population of larger fish and the fact that the rainbows, browns, and brookies in this river have bellied up to a diet of seafood – a white shrimp called Mysis – have played a big part in these improvements.

The Blue below Dillon Reservoir is not a typical Colorado tailwater. In fact, fishing the Blue below Dillon is a somewhat urban experience – it flows through Silverthorne, and those fast food joints, gas stations, and factory outlet stores make a strange setting for a gold medal trout stream.