Blue River

Current Conditions:

Recent Reports
Pat Dorsey’s Stream Report:

Pat Dorsey’s Stream Report: Blue River

The Blue River is a pocket water paradise. There are miles of public water between the town of Silverthorne and Green Mountain Reservoir for you to sample.

Current Conditions

Clarity: Excellent

14 Day Forecast:  Look for low flows and sporadic hatches of midges and baetis.

Tips and Other Information: The Blue River in the town of Silverthorne is your best bet right now. Effective patterns include Mysis Shrimp, egg patterns, or a red larvae, trailed by an assortment of small mayfly and midge imitations. These fish see a ton of flies so having light tippet and tiny sparse flies can be the ticket on a tough day. Having your flies right above the bottom of the river will be your best bet to hook these wary trout. Using a yarn indicator is key for this river as these fish will spook easily to an indicator smacking the surface. We have had good luck using a #16 jigged pheasant tail as a lead pattern then dropping a size #22-24 midge emerger behind it. Top patterns here are red larva, mercury midges, top secret midges, and stalcups baetis.

Effective Patterns:

#18-20 Mysis Shrimp, #20-22 Medallion Midge, #20-22 Mercury Midge, #22-22 Black Beauty, #20-22 Red Larva, #20-22 Sparkle Wing RS 2, #20-22 Manhattan Midge, #20-24 Top Secret Midge, #20 JujuBaetis, #18-22 Mercury Flashback Pheasant Tail, #22-24 Chocolate Foam Wing Emerger, #18 Hot Tail Flash Egg, #20-24 Griffith Gnat, #22-24 Matt’s Midge, and 22-26 Parachute Adams.

Many anglers I know have a love-hate relationship with the Blue River. Just about the time you think you have the river figured out, a humbling experience devastates your ego. The Blue River is a fantastic fishery and a favorite of mine. The Blue certainly is a beautiful as they come, and gives visiting anglers a real sense of “Colorado”. It’s a tough river at times, but a good challenge will always make you a better fly-fisherman. The water is extremely cold coming off the bottom of Lake Dillon. This cold water dictates and controls the feeding window of the trout. It’s not a great morning fishery, but as the water gradually warms up throughout the day, the fishing improves dramatically. The upper stretches of the Blue (from the base of the dam through Silverthorne) holds trophy trout, fattening up on Mysis Shrimp from the lake above. The water is gin clear requiring perfect presentations. Down stream the Blue River changes back in a typical mountain trout stream with a diverse insect life. Several tributaries enter the river before it spills into Green Mountain Reservoir.

The river is  lined with cottonwood trees and willows and is tucked to the east of the beautiful Gore Range. Because the water is so cold the river fishes best from mid-day to dark. Anglers can expect to catch mostly brown trout, a hand full of cut-bows as well as a few rainbows and the river can be excellent with dry fly patterns later in the afternoons and evenings. The hatches include blue wing olives, caddis, red quills, green drakes, pmd’s, and stoneflies. The regulations are catch and release in Silverthorne and on the lower reaches the limit is two trout over 16 inches in length and is artificial flies and lures only.

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