Blue River Silverthorne

Blue River - Silverthorne

Difficulty Intermediate/Advanced
Ideal Days To Fish 8/11 & 8/14 through 8/16

Weekly Report

Report DateAug. 11, 2022

It is business as usual on the Blue River, near Silverthorne. Flows, while low, have held steady for the last several weeks and trout are well adapted to their habitat. With this in mind, you are going to need to work for it as trout can be highly selective and stubborn at times. Sight fishing will dramatically improve your odds so do your best to locate holding trout before aimlessly casting. Otherwise, survey the slack water and areas along the bank in the early hours, but as things warm up and hatch activity materializes, look to the faster riffles, runs and seems as this is where trout will feed on emerging bugs. The mid morning hours through the early afternoon have been the most productive given consistent rain on the later parts of the day. Hatch activity has been strong with a variety of bugs in and on the water. However, dry fly fishing can be hit or miss. With a number of voluntary fishing closures across the Colorado River Basins, the Blue is a great option this time of year. Nymphing will do most of the heavy lifting, but come prepared to fish some dry flies, particularly in the late morning and early afternoon. As for nymphing, lead with something slightly bigger like a stonefly, leech or searcher pattern like a Hare’s Ear or Flashback PT followed by one or more smaller imitations.

Recommended Flies

River Flow

Flow Region
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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.