Tailwater · Mixed · Utah

Green River below Flaming Gorge Dam

One of the great trout tailwaters anywhere, and famous enough that it doesn't need the hard sell.

Species

A proper day on the water

Low and clear — careful approach country. Stay small, stay accurate.

75% confidence in this read
Water temperature for brown trout
Cool — slow
9°C est.ideal 1016°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
Dry recently
No gauge reading
Water temp
9.0°C
Estimated
Clarity
Clear
Air temp
22°C
Wind
NW 21 km/h
Moderate breeze
Pressure
1014 hPa
Rain · 24h
0.0 mm
No rain
Rain · ahead
0.8 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.
  • Open all year
  • The Green is a special-regulation water — verify current tackle and limit rules against the UDWR 2026 Fishing Guidebook before relying on them
  • Flow is set by Flaming Gorge releases (Bureau of Reclamation); a cfs number alone isn't the whole story — watch the release trend and ramping.
Directions
About this water

One of the great trout tailwaters anywhere, and famous enough that it doesn't need the hard sell. Cold, clear water spilling out of Flaming Gorge into a red-rock canyon, water so clear you can count the fish before you spook them — which, on a busy day below the dam, you will. It fishes as three different rivers. Section A from the dam to Little Hole is the postcard: high fish density, high pressure, wade-and-drift water where the trout have seen every fly in the bin. Section B down to Indian Crossing trades some of that density for a quieter, more boat-friendly float. Section C runs lower and wilder toward the Colorado line, where a streamer and some solitude do well. Browns and rainbows the length of it, plus whitefish if you nymph deep in winter. Sight-fishing here is a craft, not a gimmick — long leaders, small flies, and the patience to fish to a fish you can actually see.

Under the surface

The Green below Flaming Gorge Dam is the river on all the postcards — emerald water running clear over pale cobble at the foot of soaring red Uinta quartzite walls, in a canyon so striking you keep forgetting to fish. Cold, even water comes off the dam and runs through Red Canyon past Little Hole, the famous seven-mile A-section, where the trout are so numerous and so visible in the clear current that the fishing feels almost unfair until you actually try to fool one. The bed is rounded cobble and ledge; the geology is ancient Uinta Mountain Group quartzite and shale, red as rust above the green water. The flow is tailwater-steady. Wading the edges is good and a raft or drift boat opens the rest. It is, by common consent, one of the most beautiful trout rivers in America.

Wading: Strong clear current over visible, wary fish

  • Mixed
  • Partly confined
  • Pool riffle
Seasons & zones
  • Trout1 January → 31 December