Tailwater · Mixed · Colorado

Uncompahgre River (Pa-Co-Chu-Puk / Ridgway)

Uncompahgre River (Pa-Co-Chu-Puk / Ridgway) terrain map

The Uncompahgre below Ridgway Reservoir — the reach everyone calls Pa-Co-Chu-Puk — is a compact, manicured tailwater inside the state park, the kind of accessible technical water that's perfect for a half-day when the freestones are blown or frozen.

Prime · Brown Trout
Sparkle Dun · 14-18
Primelive now
About as good as it gets
River steady at a fishable height. On the feed top to bottom — start on the rises with a dry, drop a nymph if they stay down.
75% confidence
What moved it
  • Level0.67 mLast reading 23h ago
  • Water temp10.3°C
  • ClarityClear
Today's fly
SD
Sparkle Dun14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.67 m
Last reading 23h ago
Water temp10.3°C
ClarityClear
Weather21°C
WindSE 6 km/h
Pressure1015 hPa
Rain · recent0.0 mm
Rain · ahead3.2 mm

Live readings — water temperature is an estimate where the gauge does not record it.

Water temperature for Brown Trout
Ideal
10°C est.ideal 1016°C
0°14°28°
How to fish it · for Brown 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
Excellent — water temperature is working for you, but time of day is the limiting factor today.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 3 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

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Evidence
ModelledModerate confidence

Modelled from regional ecology — no survey or occurrence data for this water yet.

Through the year
0–3 scale · July 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
Western Blue-Winged OliveHatch
2
3
3
3
3
3
3
3
2
Pale Morning DunHatch
2
3
3
2
TricoHatch
2
3
2
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2

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

Ranked for today
Brown Trout fly box
Permits & access
Permit required — see local rules.
  • Colorado licence
  • Pa-Co-Chu-Puk special regulations (flies/lures, C&R) and Ridgway State Park access — verify CPW rules and park fees.
What's coming
Plan ahead
5-day outlook
Other water nearby · 1
About this water

The Uncompahgre below Ridgway Reservoir — the reach everyone calls Pa-Co-Chu-Puk — is a compact, manicured tailwater inside the state park, the kind of accessible technical water that's perfect for a half-day when the freestones are blown or frozen. Browns and rainbows in clear, cold, release-controlled flows, willing to look at small flies if you fish them honestly. It's tidy and busy and not wild, but it fishes year-round and it's a genuinely useful stop on the way to the bigger San Juan country around Ouray and Ridgway.

  • Mixed
Water quality · US Clean Water Act
  • Aquatic lifeSupporting
What this classification means

EPA ATTAINS assessment unit 'Uncompahgre River, all tributaries.' (COGUUN10a_A), 2024 Integrated Report. Aquatic Life use: Fully Supporting. 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) · COGUUN10a_A

The full read · show the working · for Brown Trout · confidence 75%
How the 81 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity64 × 12%7.7
Conditions total= 81
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
  • Trout1 January31 December
Related guides
Booking & contacts