Cutthroat Anglers · Silverthorne
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Blue River (Silverthorne tailwater)
Tailwater · Dillon Dam through SilverthorneClass 2Fair / Picky
100
● Live flow & water temp from USGS
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Get Pro151 cfs
Flow
44°F
Water temp
39.626, -106.066
Location · USGS gauge
40–200
Ideal flow · cfs
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Open TroutRoutesCurated tactics (not live weather). Evergreen tactics and dated shop notes. Today's flow and water temp are the live gauge readings above; today's weather is the NWS forecast.
Shop-reported conditions · water 40–46°F
~54 cfs Silverthorne (Cutthroat Anglers 6/15) · low/clear · sight-fishing classic · stocked fish wisened up · water temp 40s°F · Blue below Green Mtn spiked to ~579 cfs (CTA 6/15: flows 'all over the place,' fluctuating sporadically — check gauge every AM before driving down)
Strategy
Per Cutthroat Anglers 5/26: 'Fish were stocked end of March but fishing pressure has caught up and most fish have been caught and wisened up. Back to technical tailwater strategies with tiny flies (22-24) and 5x tippet. Flies like the RS2, WD40, and basic thread midges have been great. Think natural, no bead heads, minimal flashback. Sight fishing the key to success.' Long 12-14 ft leaders.
Detailed report
Cutthroat Anglers 6/15: Silverthorne holding ~54 cfs, water temp 40s°F, clear; Blue below Green Mountain spiked to ~579 cfs (CTA 6/15: flows 'all over the place,' expect sporadic fluctuation — check gauge every AM before heading down). Mysis stays year-round staple; tiny mayfly/midge stuff doing heavy lifting on Silverthorne section. Long leaders (12-14 ft) with 5X tippet. Sight fishing the key. CTA FREE evening workshop series every Wed.
Report: Cutthroat Anglers / Fly Fish Food · June 15, 2026 (CTA last update) · Cutthroat Anglers staff + Fly Fish Food
Fly-shop reports
Support your local fly shops3 shops report on Blue River (Silverthorne tailwater)Fly Fish Food
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BlueStream Fly
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Live where shops report — call for what’s biting today.
Where a shop's report can be read, it is pulled live when you open this river; the rest link to the shop. Shop wording varies — tap through for the full, original report.
Fishability Score breakdown
How today's 100 is built: flow and water temp, weighted 35:25 and rescaled to 100.
Flow100/100
Water temp100/100
Scored on live flow and water temperature only. Weather and hatch are not in the number yet.
What to throw — by time of day
MorningNOW
Dawn – 11am
RS-2 #22–24, WD-40 #22, basic thread midge #22, Mysis #18–22 (no bead-head)
Midday
11am – 5pm
BWO emerger #20 to risers (overcast), Mysis #18, Black Beauty #22, JuJu Baetis #18
Evening
5pm – dark
Tiny midge cluster #22, soft hackle swing, fish-the-film with parachute Adams #20
Species
Rainbow · Brown
Seasonal hatch report
In season now
Fall — BWOs & Streamers
Cooling water wakes the fish up. Blue-Winged Olives return on grey afternoons, and pre-spawn browns chase streamers hard.
Morning
NOWDawn – 11am
Hatching
Midges · BWO nymphs · Trico (early fall)
Flies
Pheasant Tail #18, RS-2 #20, Trico spinner #24
Rig
Nymph deep; streamer the banks early for aggressive browns.
Afternoon
11am – 5pm
Hatching
Blue-Winged Olives · October caddis (freestone)
Flies
BWO dun #20-22, Parachute Adams #20, October Caddis #10
Rig
Overcast = dry BWOs; otherwise swing/strip streamers for browns.
Evening
5pm – dark
Hatching
BWO spinners · Streamer window
Flies
Sculpin/Woolly Bugger #6-8, RS-2 #20
Rig
Strip big flies through frog water at last light for the biggest fish.
Source: Hatchwise Seasonal Guide · updated Jul 5, 12:00 PM MT. General seasonal patterns — verify against a current local shop report before you go.
Sources & last updated
| Source | Feeds | Most recent update |
|---|---|---|
| USGS 09050700 | Blue River (Silverthorne tailwater) | Oct 30, 8:15 AM MT · flow + temp live |
| Hatchwise Seasonal Guide | Hatch & fly guidance | Jul 5, 12:00 PM MT · editorial |
| Cutthroat Anglers | Shop fly report | Live — see report |
| Fly Fish Food | Shop fly report | Live — see report |
| BlueStream Fly | Shop fly report | Live — see report |
Live flow & water temp come straight from the USGS Instantaneous Values service; timestamps are the gauge's own reading times (Mountain Time).