Tarryall Creek

Freestone · below Tarryall ReservoirClass 2Fair / Picky

○ Live fetch unavailable — showing sample data

45 cfs

Flow

47°F

Water temp

38.967, -105.581

Location · USGS gauge

25–90

Ideal flow · cfs

Conditions · water 44–50°F

~40–50 cfs below the reservoir — stable, healthy, up from spring lows · bug life ramping (caddis/midges/BWOs) · hopper-dropper water · watch afternoon water temps; mosquitoes heavy

Strategy

Small freestone, dry-dropper paradise. Meadow sections slower/clearer — sight fish. Riffle sections like Stimulator. Recent Collard Ranch public access. Best from late spring through early winter. South Park calm pocket — today (Sun Jul 5) ~72°F, mostly sunny; scattered PM storms return Tue–Wed.

Detailed report

Stable spring-fed ~28 cfs below Tarryall Reservoir — bug life ramping. Caddis hatching with midges and BWOs (caddis hatch runs to end of October). Spring-fed, fishes through most weather. South Park pattern: today (Sun Jul 5) ~72°F, mostly sunny; scattered PM storms return Tue–Wed. Collard Ranch new public access stretch worth a look. Chubby Chernobyl/Yellow Stim + PT or RS-2 dropper is the rig.

Report: Rise Beyond / Colorado Trout Hunters · June 4, 2026 · Rise Beyond staff

Fly-shop reports

2 shops report on Tarryall Creek

Rise Beyond Fly Fishing

Live report

Colorado Trout Hunters

Live report

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 #16–20, BWO emerger #20, dry-dropper, small caddis #16

Evening

5pm – dark

Yellow Stimulator #12–14 (faster water), Adams #18, Elk Hair Caddis #16

Species

Brown · Rainbow · Brook

USGS gauge 06695000

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

Source	Feeds	Most recent update
USGS 06695000	Tarryall Creek	Sample data — no live reading
Hatchwise Seasonal Guide	Hatch & fly guidance	Jul 5, 12:00 PM MT · editorial
Rise Beyond Fly Fishing	Shop fly report	Live — see report
Colorado Trout Hunters	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).