All rivers

West Creek (Glenhaven)

Freestone · Cow Creek Trailhead → 1.3 mi hike-in · RMNP boundaryClass 3Fair / Picky
92

○ Live fetch unavailable — showing sample data

8 cfs
Flow
44°F
Water temp
40.452, -105.403
Location · approximate
5–30
Ideal flow · cfs
Conditions · water 40–48°F

low spring creek · post-storm bump

Strategy

Hike-in only — 1.3 mi from Cow Creek TH off CR-43 / McGraw Ranch Rd. Worth pushing 0.5 mi upstream to West Creek Falls. NO STOCKING — purely wild trout. Small water, light rod (3–4wt), short casts. Trail conditions drying out fast through a warm, mostly sunny week, but expect mud spots at elevation.

Detailed report

Off-the-beaten-path RMNP wild fishery. Quiet alternative to crowded Big Thompson / Fall River. Bring bear spray — Cow Creek drainage. Trail consolidating fast — a warm, mostly sunny week helping. Mountain pattern: today (Wed) ~76°F, mostly sunny with the heat easing toward seasonal normals, afternoon storm chances midweek with isolated afternoon storms. RMNP timed-entry permit IN EFFECT (9am-2pm daily) — Cow Creek TH outside timed-entry zone but verify status.

Report: Steve Schweitzer (independent author) / Kirk's Fly Shop · June 4, 2026 (general reference, low public report cadence) · Steve Schweitzer — A Fly Fishing Guide to Rocky Mountain National Park

Fly-shop reports

3 shops report on West Creek (Glenhaven)

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%.

Flow100/100
Water temp100/100
Weather76/100
Hatch match82/100

Weather & hatch are placeholder factors until wired to live sources.

What to throw — by time of day

Morning
Dawn – 11am

Pheasant Tail #18, RS-2 #20, midge larva #20

MiddayNOW
11am – 5pm

Parachute Adams #16, dry-dropper rig (Stimulator #14 + Hare's Ear #16), small caddis #16

Evening
5pm – dark

Elk Hair Caddis #16, Adams #18

Species
Brown (wild) · Brook (wild)
Ungauged — park water

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
Dawn – 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
NOW
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

SourceFeedsMost recent update
USGS West Creek (Glenhaven)Sample data — no live reading
Hatchwise Seasonal GuideHatch & fly guidanceJul 5, 12:00 PM MT · editorial
Steve Schweitzer — A Fly Fishing Guide to Rocky Mountain National Park Shop fly reportLive — see report
FishExplorer Shop fly reportLive — see report
NPS — Rocky Mountain National Park Shop fly reportLive — see report

Live flow & water temp come straight from the USGS Instantaneous Values service; timestamps are the gauge's own reading times (Mountain Time).