Freestone · Mixed · Wyoming/Montana, US

Slough Creek

Slough Creek (95368p)
Today · About as good as it gets
Sculpin Streamer
Forecast · Today
About as good as it gets
On the feed top to bottom — start on the rises with a dry, drop a nymph if they stay down.
90% projected
Today's fly
Sculpin Streamer
Sculpin Streamer
Conditions on the water · Today
Proxy gauge
Level
Falling
Proxy
via Soda Butte Creek
Water temp8.5°C
ClarityClearing
Weather7°C
WindN 10 km/h
Pressure1029 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

No gauge on this water — conditions are inferred from Soda Butte Creek. The trend transfers, the absolute level does not.

Water temperature for Cutthroat Trout
Cool — slow
9°C est.ideal 9–15°C
0°14°28°
How to fish it · for Cutthroat Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Good — water clarity is working for you, but time of day is the limiting factor today.
Likely species
Mayflies
Chironomids
Damselflies & dragonflies
Hatch timeline · todayPeak at 21:00

12:00(now) — Western Blue-Winged Olive

Stage: On emergersApproach: Emerger or dryActivity: 45%
Also:Black Midge40%
Peak emergence window4 food groups active

Peak activity at 21:00 — Brown Dun (Brown Dun, 3 food groups active)

Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey(1)

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Evidence
Records-basedModerate confidence

Based on species-occurrence records, not local invertebrate surveys.

Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Brown DunHatch
2
3
3
3
3
3
3
2
Western Green DrakeHatch
2
2
Flav (Small Western Green Drake)Hatch
2
3
2
Mahogany DunHatch
2
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Fly box · Cutthroat Trout
SD
Sex Dungeon
2-6 · Pattern
Proven pattern for this period
Permits & access
Permit required — see local rules.
  • Yellowstone NP licence and native-cutthroat rules (barbless catch-and-release) — check current NPS regulations.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Lamar River
7.0 km
65
Cutthroat trout
Soda Butte Creek
14 km
64
Cutthroat trout
Gardner River
31 km
80
Cutthroat trout · Brown trout · Rainbow trout
Gibbon River
41 km
Brown trout · Rainbow trout · Brook trout
Yellowstone Lake
53 km
Cutthroat trout
Gallery · 2
  1. Slough Creek (95368p)
  2. Terrain map of the venue
    Terrain map
Conservation note

Native Yellowstone cutthroat — barbless catch-and-release under Park rules; handle minimally.

The full read · show the working · for Cutthroat Trout · confidence 75%
How the 65 is built — score × weight = contribution
Temperature55 × 28%15.4
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time40 × 13%5.2
Pressure75 × 7%5.3
Insect activity49 × 12%5.9
Conditions total= 65
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Soda Butte Creekproxy
Prey activitymodelled from regional profilemodelled
What would change the calculation
Warmer water — toward the 9–15 °C ideal band — would lift the temperature score.
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout Saturday de Memorial Day weekend → Primer Sunday in November
Related guides
Euro Nymphingsubsurface methods
Booking & contacts