Freestone · Quartzite Granite · Utah, US

Uinta south-slope streams cluster

Uinta south-slope streams cluster terrain map

The south slope of the High Uintas is the Utah expansion that will make a Californian angler stop comparing everything to the Sierra.

Today · A proper day on the water
Sculpin Streamer
Forecast · Today
A proper day on the water
A proper day for it. Work the seams with an upstream nymph, switch to the dry when they show.
90% projected
Today's fly
Sculpin Streamer
Sculpin Streamer
Conditions on the water · Today
Proxy gauge
Level
Steady
Proxy
via Duchesne River
Water temp7.5°C
ClarityClear
Weather9°C
WindN 10 km/h
Pressure1018 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

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

Water temperature for Brook Trout
Cool — slow
8°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brook 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 water temperature is the limiting factor today.
Likely species
Mayflies
Caddisflies
Hatch timeline · todayPeak at 10am

12pm(now) — Black Midge

Stage: On emergersApproach: Emerger or dryActivity: 77%
Peak emergence window3 food groups active

Peak activity at 10am — Black Midge (Black Midge, Peak emergence window)

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

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Evidence
Records-basedModerate confidence

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

Through the year
0–3 scale · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
2
2
2
2
2
1
Sculpin (North America)Hatch
2
3
2
Brown DunHatch
2
3
3
3
3
3
3
2
SalmonflyHatch
2
3
2
Golden StoneHatch
2
3
2

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

Ranked for today
Brook Trout fly box
SD
Sex Dungeon
2-6 · Pattern
Proven pattern for this period
Permits & access
Permit required — see local rules.
  • Cluster overview
  • Verify each stream's access, guide-permit context, and cutthroat-specific rules before surfacing individual reaches
  • Handle native cutthroat conservatively.
What's coming
Plan ahead
5-day outlook
Other water nearby · 1
Duchesne River
29 km
Brown trout · Rainbow trout · Cutthroat trout
About this water

The south slope of the High Uintas is the Utah expansion that will make a Californian angler stop comparing everything to the Sierra. Lake Fork, Rock Creek, Yellowstone, Whiterocks and the Uinta River drain cold, high country into the Uinta Basin, with wild trout, native cutthroat context, pocket water and a fraction of the pressure of the Provo corridor. Treat this as a cluster of options rather than one precise river: the waters are numerous, access varies, and some reaches deserve careful native-fish handling. The appeal is obvious — high-country trout, guideable walk-wade water, and a real sense of being somewhere different.

  • Quartzite granite
Water quality · US Clean Water Act
  • Aquatic life: Impaired
What this classification means

EPA ATTAINS assessment unit 'Uinta River-4' (UT14060003-024_00), 2024 Integrated Report. Aquatic Life use: Not Supporting. Listed impairment causes: Metals Other Than Mercury. This is a Clean Water Act assessment-unit classification (the US analogue of WFD), not a live reading.

Status is for the Clean Water Act assessment unit covering this reach.

EPA ATTAINS (Clean Water Act) · UT14060003-024_00

The full read · show the working · for Brook Trout · confidence 75%
How the 61 is built — score × weight = contribution
Temperature29 × 28%8.1
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure75 × 7%5.3
Insect activity31 × 12%3.7
Conditions total= 61
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Duchesne Riverproxy
Prey activitymodelled from regional profilemodelled
What would change the calculation
Warmer water — toward the 10–16 °C ideal band — would lift the temperature score.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 January → 31 December
Related guides
Euro Nymphingsubsurface methods
Booking & contacts