Mountain West
Fly fishing in Utah
Short answer
Utah fly fishing is tailwater and mountain lake fishing in desert country, with rainbow, brown and brook trout, three native cutthroat subspecies and a well-known tiger trout fishery. The Green, Provo and Weber are the headline rivers. A license is required from age 12, and most waters are open all year.
What makes Utah different
The Green River below Flaming Gorge is the reason people fly to Utah. Water released from the bottom of the reservoir runs cold and startlingly clear all year, and the stretch below the dam carries one of the densest trout populations in the United States — clear enough that the trail along the canyon rim is a viewing platform, and you can choose a fish before you cast to it. That visibility cuts both ways: these trout see the angler as plainly as the angler sees them, and long leaders and small flies are not optional. Utah's second quirk is its stillwater. The mountain lakes on Boulder Mountain and the Uintas are stocked with tiger trout, a sterile brown-brook hybrid that grows fast and takes a fly hard, and they have turned alpine lake fishing from a curiosity into a reason to plan a trip.
What trout are in Utah?
- Rainbow trout
- Widespread, and the backbone of the Green and the Provo.
- Brown trout
- Wild and large on the Green and the lower Provo.
- Bonneville cutthroat
- Native to the Bonneville basin, and the state fish.
- Colorado River cutthroat
- Native in the eastern drainages.
- Yellowstone cutthroat
- Native in the Bear River drainage in the north.
- Tiger trout
- A sterile brown-brook hybrid stocked in mountain lakes. Aggressive, and grows quickly.
- Brook trout
- High streams and lakes across the Uintas and Boulder Mountain.
Where to fly fish in Utah
- Green River — A section
- Below Flaming Gorge. Extraordinary trout numbers in water clear enough to sight fish from above.
- Middle Provo River
- Restored meanders between Jordanelle and Deer Creek. Even flows and a dependable hatch calendar.
- Lower Provo River
- Below Deer Creek, running into Provo Canyon. Heavier browns and more pressure.
- Weber River
- Less famous than the Provo and often less crowded, with good brown trout water.
- Logan River
- Northern canyon water holding native Bonneville cutthroat.
- Boulder Mountain lakes
- A high plateau of small lakes for tiger, brook and cutthroat trout.
When to fly fish in Utah
| When | What is happening |
|---|---|
| January – March | The Green and the Provo fish all winter. Midges, small Baetis, and very few people. |
| April – May | Blue-wing olives, then the cicadas on the Green in late May — the busiest and best-known weeks of the year. |
| June | Runoff on the freestone water. Tailwaters carry the month, and the high lakes begin to open. |
| July – August | PMDs, terrestrials, and the mountain lakes at their best. Fish the canyon water early in the heat. |
| September – December | Baetis, pre-spawn browns, and streamer fishing. The tailwaters never close. |
Do you need a license to fly fish in Utah?
Yes. Licenses are issued by Utah Division of Wildlife Resources.
| License | Price |
|---|---|
| Resident, annual | $40 |
| Non-resident, annual | $120 |
Figures are the DWR's 2026 rates for an adult 365-day fishing license, ages 18 to 64. Non-resident fees rose from $94 to $120 on 1 July 2025. Prices change — check with the agency before you buy.
Rules worth knowing before you go
- A fishing license is required from age 12. Most Utah waters are open to fishing year-round, with exceptions listed in the guidebook.
- Fishing with two poles at once requires a separate two-pole permit.
- Blue Ribbon and other special-regulation waters carry their own tackle and harvest rules — much of the Green and stretches of the Provo among them.
- Rules are set water by water in the annual fishing guidebook, and they change. Check the stretch before you fish it.
Regulations change every year and vary water by water. The Utah Division of Wildlife Resources rule book is the only authority — this page is a starting point, not a legal reference.
Flies that matter in Utah
Each of these is a card in the deck, and each has a full page in Our Fly-brary.
Keep reading
- Do I need a fishing license? — how licensing works across states
- How to read water — where trout hold, anywhere
- Best time of day to fly fish — the seasonal logic behind the table above
- Our Fly-brary — every fly in the deck, explained
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The deck
54 flies, drawn by hand, in your jacket pocket.
A 54-card fly-fishing deck of original hand-drawn flies, each explaining what it imitates. Made by a father-and-daughter team in Eagle, Idaho.
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