Blue River Silverthorne

Blue River - Silverthorne

Difficulty Intermediate/Advanced
Ideal Days To Fish 11/25 through 11/27 & 12/1

Weekly Report

Report DateNov. 24, 2022

Since increasing earlier in the month, flows on the Blue have largely held steady and remain on the lower end, but are within the ideal flow range for this time of year. With this in mind, there is more room for trout to spread out. However, they are continuing to stack up in the soft water like the slow runs, deep pools and slack water. Water clarity is still about as good as it gets and the water is cold. In the mornings, trout are favoring the slack water along the banks as this is where water temps are warmest and trout are able to conserve the most energy. As such, be cautious when approaching the water and keep a low profile when moving from point A to point B. Midges have quickly become the prominent food source and remain the primary hatch. Surface action has been hit or miss over the last few days, but should be decent in the afternoons in the days to come. Either way, nymphing with plenty of weight and smaller imitations will be a good place to start. Midge larva will be effective in the early hours and a midge larva to one or more pupa will be the way to go in the late morning/early afternoon. That being said, don’t be afraid to mix in some bigger bugs at the lead like a Mysis, UV Scud or San Juan Worm.

Recommended Flies

River Flow

Flow Region

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.