Current Conditions

Blue River – Near Dillon

Flow: 47 ft3/s
Temp: N/A F
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Blue River – Below Dillon

Flow: 96 ft3/s
Temp: N/A F
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Blue River – Below Slate Creek

Flow: N/A ft3/s
Temp: N/A F
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Blue River – Above Green Mountain Reservoir

Flow: N/A ft3/s
Temp: N/A F
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Recent Reports

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: Good throughout its entirety

Water Temperature: Low to mid 40’s near the dam, mid to upper on the lower reaches

Hatches: Midges and blue-winged olives

14 Day Forecast:  Look for hatches of midges and blue-winged olives.

Tips and Other Information:  The Blue River is in good shape from Dillon Reservoir until the mouth of Green Mountain Reservoir. In town, use the standard tailwater bugs, small midges and mayfly nymphs. It’s hard to go wrong with egg Baetis nymph combos this time of year. The lower Blue is a “nice fish” plus you can escape the crowds. The trade off is worth the compromise in my opinion.

Effective Patterns:  #10 Pats Rubber Legs,  #16 Graphic Caddis, ​ #20-22 Mercury Flashback Pheasant Tail, #20 Laney’s Mysis, #20 Jujabaetis, #22 Stalcup’s Baetis, #20 Mercury Flashback Pheasant Tail,  #22 Red Midge Larva, #20-24 Brassie, #20 WD 40, #16 Elk Hair Caddis, #14-16 Yellow Stimulator, #16 Pale Morning Dun, and #10 Amy’s Ant.

About the Blue River

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.