North St. Vrain Creek
● Live flow from USGS · water temp from sample (no temp sensor at this gauge)
whole drainage now open — melt essentially done (~2–3 weeks ahead) · RMA 6/20: St. Vrain system flows a bit on the higher side with unusually warm-ish water temps for late June · Wild Basin trails drying (6/21–6/23 reports: scattered mud, occasional high drifts) · fish AM for cooler water
Whole drainage now open — melt essentially done. RMA 6/20 notes the St. Vrain system running a bit high with unusually warm-ish water temps for the date, so fish mornings and watch the thermometer on the lower stretch. Wild Basin trails drying out (late-June reports: scattered mud spots, occasional drifts up high). Tight, brushy stream — short rod (7.5–8 ft), beadhead dropper to reach pool fish, dry-dropper for eager brookies up high. Park pass required for Wild Basin (RMNP timed-entry IN EFFECT — verify if your TH is inside zone). Trail Ridge Road open.
STATUS CHANGED to Fair / Picky (from Pre-runoff window): melt is done and the whole drainage is open — Wild Basin included (trail reports 6/21–6/23: scattered mud, occasional high drifts only). RMA 6/20: system flows a bit high with warm-ish water temps for the date — morning sessions favored. Designated wild trout water in places. Wild Basin trailhead — ~30 min walk to good water. Mountain pattern: today (Sun Jul 5) ~77°F, mostly sunny — all-day window; scattered storms return Tue–Wed.
Fly-shop reports
5 shops report on North St. Vrain CreekReports 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 86 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
Lower stretch: small midge #20, Pheasant Tail #18 — upper Wild Basin: not yet
Lower (around Lyons): BWO #20, dry-dropper Adams + dropper. Wild Basin: typically May–Sept only.
Lower: Elk Hair Caddis #16, Adams #18
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 06721000 | North St. Vrain Creek | Sep 14, 11:00 AM MT · flow live |
| Hatchwise Seasonal Guide | Hatch & fly guidance | Jul 5, 12:00 PM MT · editorial |
| Front Range Anglers | Shop fly report | Live — see report |
| FishExplorer | Shop fly report | Live — see report |
| NPS — Rocky Mountain National Park | Shop fly report | Live — see report |
| Saint Vrain Anglers TU | Shop fly report | Live — see report |
| The Catch and The Hatch | 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).