Green (below Flaming Gorge) Fishing Forecast
The Green (below Flaming Gorge) is a Utah freestone where flows and clarity swing with storms—meaning the bite window can flip in a single afternoon. Anglers target rainbow trout, brown trout, and lake trout across riffles, seams, and undercut banks in this region, with prime dry-fly and nymph windows typically clustering in April through October. USGS gauge 09234500 tracks live flow and temperature for planning wade or float days. Local tactics angle: The Green River below Flaming Gorge Dam is one of the finest tailwaters in the world, producing trophy brown and rainbow trout in incredible numbers. TroutFishing pairs hatch timing with solunar windows so you know when to be on the water—not just where.
Spring-fed Green (below Flaming Gorge) is flowing at 2600 CFS CFS with surface temps near 58°F°F — 6/10 today. Top pick: a LaFontaine's Deep Pupa.
Open year-round
Year-round below Flaming Gorge Dam. Blue-ribbon fishery. Special regs in some sections
Forecast and on-page guide updated September 8, 2026 (UTC). Open the app for hourly conditions.
Today's Fishing Conditions
Fair
Updated 12:26 AM
58°F
2600 CFS
4 AM - 6 AM
LaFontaine's Deep Pupa
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What Makes the Green (below Flaming Gorge) Unique?
Signature hatch or window
BWO (Mayfly) is a headline hatch to watch in September. Peak activity often tracks 38–55°F water temps.
Distinctive access
Flaming Gorge Dam: Immediately below dam - trophy water.
Rules anglers miss
A section has special regulations.
Optimal Fishing Conditions
Optimal Flow
800 - 2400 CFS
Best fishing conditions
Optimal Water Temperature
46° - 56°F
Ideal for active trout
Quick Facts
Rainbow Trout, Brown Trout, and Lake Trout
freestone
54°F - 64°F
September Hatches
BWO
Mayfly
Blue Wing Olives hatch on overcast days, spring and fall
Caddis
Caddis
Evening caddis hatches prolific through summer
Hopper
Terrestrial
Grasshoppers effective on windy afternoons
Trico
Mayfly
Early morning spinner falls, tiny flies
October Caddis
Caddis
Large fall caddis, evening emergence
September Fishing Tactics
Primary Targets
Recommended Tactics
Fall fishing improves. BWOs return, browns become aggressive.
Year-Round Fishing Guide
| Month | Water Temp | Tactics |
|---|---|---|
| January | 32-38°F | Nymphing, Midges, Small Streamers |
| February | 32-40°F | Nymphing, Midges, Small Streamers |
| March | 36-46°F | Dry Flies, BWOs, Skwala |
| April | 42-52°F | Dry Flies, BWOs, Skwala |
| May | 48-58°F | Dry Flies, BWOs, Skwala |
| June | 54-64°F | Hoppers, Terrestrials, PMDs |
| July | 58-68°F | Hoppers, Terrestrials, PMDs |
| August | 60-70°F | Hoppers, Terrestrials, PMDs |
| September(Now) | 54-64°F | Streamers, BWOs, October Caddis |
| October | 46-56°F | Streamers, BWOs, October Caddis |
| November | 38-46°F | Streamers, BWOs, October Caddis |
| December | 32-40°F | Nymphing, Midges, Small Streamers |
Recommended Equipment for Green (below Flaming Gorge)
Rod
9-foot, 5 or 6-weight. 7-weight for streamers.
Line
Floating for dries. Sink-tip for streamers.
Leader & Tippet
9-12 foot leaders, 5X-6X tippet.
Waders
Breathable waders. Cold water year-round.
Essential Flies
How to Fish Green (below Flaming Gorge): Tips & Tactics
The Green River below Flaming Gorge Dam is one of the finest tailwaters in the world, producing trophy brown and rainbow trout in incredible numbers.
Best Times of Day
Year-round fishing is excellent due to stable dam releases. The cicada hatch in summer is legendary. Fall brings aggressive brown trout.
Recommended Techniques
Match the prolific hatches - midges, BWOs, PMDs. Streamers produce trophy fish. Float fishing covers the most water.
Water Conditions
Cold dam releases create exceptional conditions. Water clarity is excellent. Fish counts exceed 8,000 trout per mile in the A section.
Fly Selection
Midge and BWO patterns essential. Cicada patterns in summer. Scuds and sowbugs year-round. Streamers for browns.
When is the Best Time to Fish Green (below Flaming Gorge)?
Spring
BWO hatches excellent. Great conditions.
Summer
Cicada hatch is legendary. Terrestrials.
Fall
Brown trout become aggressive. Trophy time.
Winter
Year-round tailwater stays productive.
Access Points & Parking for Green (below Flaming Gorge)
Flaming Gorge Dam
Immediately below dam - trophy water.
Little Hole
Famous access to quality water.
Red Creek
Mid-section access.
Browns Park
Lower river access.
Spawning Seasons
Please respect spawning fish and their redds. Avoid fishing over actively spawning trout.
Brown Trout
Spawn months: October, November
Night spawning common. Males become very dark with pronounced kype during spawn.
Rainbow Trout
Spawn months: March, April
Resident rainbow trout spawn in smaller tributaries and tend to build smaller redds than steelhead.
Lake Trout
Spawn months: October, November
Fall spawners. Unique among trout - do not build redds. Spawn over rocky shoals and reefs. Eggs incubate over winter and hatch in spring.
Green (below Flaming Gorge) Fishing Regulations
Season
Open year-round.
Limits
Slot limits protect trophy fish. Check Utah DWR.
Special Regulations
A section has special regulations.
Bait Restrictions
Artificial flies and lures only.
Notes
One of the finest tailwaters in the world.
Always verify current regulations with Utah fish and wildlife agency before fishing. Regulations can change annually.
Fly Shops & Guides Near Green (below Flaming Gorge)
Local Fly Shops
- Trout Creek Flies - Dutch John
- Flaming Gorge Lodge
- Green River Outfitters
Guide Services
- Trout Creek Flies Guides
- Green River Guides
- Utah Fly Fishing
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Green (below Flaming Gorge) — frequently asked questions
When is the best time to fish the Green (below Flaming Gorge)?
Fall fishing improves. BWOs return, browns become aggressive.
What flies should I bring to the Green (below Flaming Gorge)?
For the Green (below Flaming Gorge) (freestone), carry: Midge, BWO, Cicada, Scud, Woolly Bugger.
What water temperature is best for trout on the Green (below Flaming Gorge)?
On the Green (below Flaming Gorge), trout hold between 46° and 56°F. In summer, expect temps to swing with air temperature — fish early.
Do I need a fishing license for the Green (below Flaming Gorge)?
Yes — you need a valid Utah fishing license to fish the Green (below Flaming Gorge). Local season: Open year-round.. Daily limit: Slot limits protect trophy fish. Check Utah DWR..
What hatches should I watch for on the Green (below Flaming Gorge) in September?
BWO is the signature hatch on the Green (below Flaming Gorge) in September. Match size and adjust leader size to 5X-6X. The fish key in on the emergence during low-light hours, so plan to be on the water at first light.
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