Overall River Rating:


Blue River - at Silverthorne Fly Fishing Report

Last update 05/05/16 - The flows on the Blue river below Dillon res. have been raised to around 363 cfs, which should introduce some good numbers of Mysis Shrimp into the first quarter mile below the damn. Warming water temperatures should also kick some other bugs into the mix so adding a cased Caddis or Baetis imitation into your rig would be a good call. The Blue River north of town can also be solid option as the water rises and more bugs get kicked up. Cranefly larva and golden stones can be spotted around the middle Blue so a deep nymphing rig with a crane, worm or golden stone on top with a BWO nymph or cased Caddis imitation will produce. Look for velocity shelters such as eddies, boulder jams and the edges where trout can seek shelter from the rising water.

River Information

The Blue River through Silverthorne offers anglers the opportunity to catch a 20" trout in the morning and then shop at the Gap in the afternoon. While it may seem strange to park in an outlet mall's parking lot and get wadered up next to a family looking for some afternoon shopping, the fish that reside here can quickly refocus that distraction. This stretch of river sees considerable pressure, however the fish typically respond favorably to a good dead drift. Sight fishing opportunities abound here and the fish are typically very aestheically pleasing in coloration and size due to the protein rich diet provided by the dam of Dillon Reservoir.


Winter/Spring: Midges, Baetis, Shrimp

Summer: Mayflies, Caddis, Shrimp

Fall: Baetis, Shrimp 

Seasonal Conditions

In true tailwater fashion, the flies you need to catch fish here are typically the same year round. Nymphing will be the rule throughout the majority of the year, however some good summer dry fly fishing can exist given the right conditions. Midges, Baetis, Caddis and the ever popular Mysis Shrimp should be your focus. Small streamers can also be effective during the low light hours. This river is fishable year round and sees no shortage of anglers. 

River Access

The Blue River as it runs through Silverthorne is considered Gold Medal Water and is deemed Catch and Release using only artificial flies and lures.  Access is plentiful in this area, particulalry in and arond the Outlet Mall.  Once you get a bit North of Town, access does become more limited.


  • From Iron Bridge downstream to the Forest Service Building is all public water.  Access is made particularly easy by using the bike path along side the river.
  • Retreat on the Blue, access is limited to the west side of the river.
  • Blue River Run Development, access is limited to the west side of the river only, and anglers must enter easement entrances.
  • The Ponds Development, access is available on both sides of the river.
  • Cottonwood Park Access, access is limited to the west side of the river only.