Tailwater · Mixed · Colorado, US

Fryingpan River

The Fryingpan River flowing through a red sandstone canyon lined with trees near Basalt, Colorado.

The Fryingpan is the classic Colorado technical tailwater, fourteen miles of cold, clear, mysis-rich water below Ruedi Dam where rainbows and browns grow heavy and selective.

Good · Brown Trout
RS2 · 18–22
Goodlive now
A proper day on the water
Low and clear — careful approach country. Stay small, stay accurate.
90% confidence
What moved it
  • Level0.30 mLast reading 2h ago
  • Water temp8.3°C
  • ClarityClear
Today's fly
RS2
RS218–22
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.30 m
Last reading 2h ago
Water temp8.3°C
ClarityClear
Weather14°C
WindSW 20 km/h
Pressure1012 hPa
Rain · recent4.7 mm
Rain · ahead1.3 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Brown Trout
Cool — slow
8°C est.ideal 10–16°C
0°14°28°

We have not characterised this dam's release, so this is a general cold-release figure and could be several degrees out in either direction. Treat it as a hint, not a reading, and check locally before you fish.

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
Good — water clarity is right today, though time of day could be better.
Likely species
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 6 active hatches hour by hour as a supporter.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 4 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 3 as a supporter.

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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
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
  • Gold Medal / special-regulation water — verify CPW rules.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Gallery · 2
  1. The Fryingpan River flowing through a red sandstone canyon lined with trees near Basalt, Colorado.
    The Fryingpan River winding below red-rock canyon walls near Basalt, Colorado.
  2. Terrain map of the venue
    Terrain map
About this water

The Fryingpan is the classic Colorado technical tailwater, fourteen miles of cold, clear, mysis-rich water below Ruedi Dam where rainbows and browns grow heavy and selective. The first pool under the dam — the one everybody calls the Toilet Bowl — holds outrageous fish and an equally outrageous crowd, and there's a temptation to oversell it that's worth resisting. The honest pitch is the rest of the river: small flies, long leaders, and water that fishes through the winter when half the state is iced up. Bring patience and your reading glasses for tying on size 24s.

Under the surface

The Fryingpan comes out of Ruedi Reservoir and runs fourteen miles down a tightening valley to meet the Roaring Fork at Basalt, and the first mile of it — the plunge below the dam that everyone calls the Toilet Bowl — may hold more big trout per yard than anywhere in Colorado. The reason floats out of the dam: Mysis shrimp, tiny translucent crustaceans flushed from the depths of the reservoir, a year-round protein conveyor that grows rainbows to absurd sizes and makes them maddeningly selective. The river is a clear, cold tailwater forty to eighty feet wide, flatter and weedier up top, more freestone and canyon-like as it nears Basalt. The bed is gravel and rock, the water gin-clear. Wading is straightforward, but the fish have advanced degrees and the famous water can be elbow-to-elbow.

Wading: Gin clear water over wary, well fed trout

  • Mixed
  • Partly confined
  • Pool riffle
Water quality · US Clean Water Act
  • Aquatic life: Supporting
What this classification means

EPA ATTAINS assessment unit 'Fryingpan River, all tributaries' (COUCRF07_C), 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) · COUCRF07_C

The full read · show the working · for Brown Trout · confidence 90%
How the 77 is built — score × weight = contribution
Temperature70 × 28%19.6
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity76 × 12%9.1
Conditions total= 77
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
  • Trout 1 January → 31 December
Related guides
Booking & contacts