Tailwater · Mixed · Colorado

Gunnison River — Black Canyon & Gunnison Gorge

Gunnison River — Black Canyon & Gunnison Gorge terrain map
Terrain map

The Black Canyon is the Gunnison at its most serious — trophy browns and rainbows in a sheer, dark gorge you reach by a brutal hike down or a raft through, under National Park rules that mean exactly what they say.

Species

A proper day on the water

River steady at a fishable height. A proper day for it.

75% confidence in this read
Water temperature for brown trout
Cool — slow
9°C est.ideal 10–16°C
0°14°28°
Why this score · for brown trout
  • Temperature8228% weight
  • Flow8022% weight
  • Clarity9518% weight
  • Feeding Time5013% weight
  • Pressure807% weight
  • Insect activity6212% weight
Conditions
Level
0.55 m
Water temp
9.0°C
Estimated
Clarity
Clear
Air temp
24°C
Wind
W 18 km/h
Gentle breeze
Pressure
1010 hPa
Rain · 24h
0.0 mm
No rain
Rain · ahead
0.5 mm
No meaningful rain · next 48h

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

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.
Through the year
0–3 scale · June 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
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Western Blue-Winged OliveHatch
2
3
3
3
3
3
3
3
2
Pale Morning DunHatch
2
3
3
2

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

Permits & access
Permit required — see local rules.
  • Colorado licence
  • NPS Black Canyon: flies/lures only, all rainbows C&R, brown limit 4, 200-yard closure below Crystal Dam
  • BLM Gunnison Gorge has its own rules
  • VERIFY NPS + BLM + CPW regs before fishing.
Directions
Apple MapsGoogle Maps
About this water

The Black Canyon is the Gunnison at its most serious — trophy browns and rainbows in a sheer, dark gorge you reach by a brutal hike down or a raft through, under National Park rules that mean exactly what they say. Below it the Gunnison Gorge is BLM wilderness water, float-in trophy fishing of the kind people plan trips around. This is not a flatten-it-into-one-page fishery: the Park, the BLM gorge and the tailwater release each carry their own rules and risks. Flow comes off the Aspinall dams, the wading is genuinely dangerous, and the reward is some of the best big-trout water in Colorado for anglers willing to work and respect the regulations.

Under the surface

The Gunnison through the Black Canyon is less a river you fish than a place you descend into. The canyon is one of the steepest, narrowest, deepest in North America — walls of Precambrian gneiss and schist nearly black with age, dropping two thousand feet to a river you reach by a route with a name like the Gauging Station Trail and a warning about how much harder it is coming back up. The reward is a wild, powerful Gold Medal freestone of big browns and rainbows, plunging through boulder gardens and deep green pools in a slot where the sun reaches the water only a few hours a day. The bed is house-sized boulder and bedrock; the wading is genuinely dangerous and the crossings often impossible. This is a place for the fit, the careful and the slightly obsessed — which is to say, exactly the right kind of angler.

Wading: Dangerous boulder wading, brutal climb out

  • Mixed
  • Confined
  • Step pool
  • Pool riffle
Seasons & zones
  • Trout1 January → 31 December
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