Blue River (Silverthorne tailwater)
● Live flow & water temp from USGS
~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)
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. Today (Wed) ~76°F mountain pocket, mild and pleasant, the real heat building toward midweek; fish all day.
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. Mountain pattern: today (Wed) ~76°F, sunny and dry with the weekend front cleared; mostly sunny ~73–76°F through Thu with only slight storm chances, the real heat building on the plains toward midweek. CTA FREE evening workshop series every Wed.
Fly-shop reports
3 shops report on Blue River (Silverthorne tailwater)Reports are pulled live from each shop when you open this river. Shop wording varies — tap through for the full, original report.
Fishability Score breakdown
How today's 92 is built. Flow 35% · Water temp 25% · Weather 20% · Hatch 20%.
Weather & hatch are placeholder factors until wired to live sources.
What to throw — by time of day
RS-2 #22–24, WD-40 #22, basic thread midge #22, Mysis #18–22 (no bead-head)
BWO emerger #20 to risers (overcast), Mysis #18, Black Beauty #22, JuJu Baetis #18
Tiny midge cluster #22, soft hackle swing, fish-the-film with parachute Adams #20
Seasonal hatch report
Fall — BWOs & Streamers
Cooling water wakes the fish up. Blue-Winged Olives return on grey afternoons, and pre-spawn browns chase streamers hard.
Sources & last updated
| Source | Feeds | Most recent update |
|---|---|---|
| USGS 09050700 | Blue River (Silverthorne tailwater) | Sep 14, 11:15 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).