Blue River - Silverthorne

Weekly Overview:

November 26, 2020: 

  • Difficulty: Intermediate/Advanced

  • Low flows, high water clarity and skittish trout will certainly test your skills as an angler. That said, use high water clarity to your advantage and do your best to sight fish. Keep a low profile and approach the water with caution. We like to observe from afar before getting too close. Nymphing is going to be your best bet here. Small and simple nymph rigs with imitative midge or baetis patterns will garner the best results. Black Beauties, Mercury Midges, RS2s, Tube Midges, Darth Baetis, Jujubaetis and Chocolate Foamback Emergers have been the MVPs. That said, don’t hesitate to lead with a bigger searcher pattern like a Flashback PT, Hare’s Ear or Electric Cadds. Surface action has been hit or miss, but you will likely come across some rising trout in areas with cover, particularly under the I-70 bridge. In this case, go with small midge or BWO patterns. We like to lead with a dry fly followed by an emerger as these trout are often barely sipping. Air temps are forecast to be on the cooler end for the next few days which will lead to slow mornings on the water. This coupled with sun exposure will make for a challenge.

  • Ideal Days: 11/26

  • Go to flies:

    • Sub-Surface Flies: Tube Midge (#22-24), Money Midge (#22-24), Zebra Midge (#22-24), Black Beauty (#22-24), Top Secret Midges (#22-24), Mercury Midge (#22-24), WD 40's (#20-22), Sparkle Wing RS2's (#20-22), olive RS2s (#20-22), JuJu Baetis (#20-22), Sparkle Pupa (#16-18), Chocolate Foam Wing Emerger (#22-24), Mysis Shrimp (#18-20), SJ Worms (#10-12), Caddis Candy (#16-18).

    • Surface Flies: Parachute Adams (#20-22), Griffiths Gnat (#22-24), PMD Thorax Dun (#20-22), Parachute PMD (#20-22), Resting Caddis (#16-18), X2 Caddis (#16-18), Elk Hair Caddis (#16-18) 

Detailed River Info:


Below Dillon Dam is a prized section of the Blue River that runs 19 miles until it meets the Green Mountain Reservoir. The stretch of river that runs through the town of Silverthorne is one of the most sought after tail waters in Colorado. Dillon Reservoir is one of the few Colorado reservoirs that was stocked with Mysis Shrimp and as a result, when water is released from the dam, shrimp trickle into the river. This calorie-rich meal is the trout equivalent to a body builders training supplement and results in some beefy fish! This section of the Blue is unique in that it runs through the tourist heavy town of Silverthorne. Therefore, if you are looking for a fishing experience full of spectators touting Tommy Hilfiger bags with a shot at landing a trophy trout, the section through Silverthorne is for you. If you are seeking more solitude and less materialism, head north down Highway 9 and pull off at one of the designated parking areas for fishing access.


The Silverthorne stretch of the Blue is a pocket water paradise. Anglers can leave their “A River Run’s Through It” casts at home and instead focus on short and tactical casts. Anglers can expect to find Rainbow, Brown and Brooke trout along this stretch with the highest concentration of trophy Rainbows being located below the dam. With the exception of Mysis Shrimp, the fly selection for the Blue is relatively consistent with the other popular Colorado tail waters. Size 18 – 24 Midge and Baetis nymphs produce year round. In the warmer months, this stretch of the Blue experiences quality Green Drake and BWO hatches. The Blue River is an accessible year round fishery and can easily be coupled with a half ski, half fish day or a family trip to the outlet malls where you drop the family and you seek much needed alone time on the water. 


River Access:

The tail water section of the Blue River below Dillon Reservoir has several miles of public water access between the town of Silverthorne and Green Mountain Reservoir. The most popular section runs behind the Silverthorne Outlets and can be accessed very easily. If you're looking for more solitude, wander north on Highway 9 towards Green Mountain Reservoir. While there is sporadic stretches of private water, the public water sections can be easily identified by parking and Department of Wildlife signage. 

© 2020

Get Social

  • Instagram Social Icon
  • Facebook Social Icon