Freestone · Mixed · Utah, US

Weber River

Fishing the Weber River in Croydon, Utah

The Weber is northern Utah's workhorse trout river — a freestone-and-reservoir hybrid that runs from the Uinta foothills down through Oakley and Morgan, holding strong wild browns and some rainbows.

Good · Brown Trout
Parachute Adams · 16–20
Goodlive now
A proper day on the water
River dropping into shape after a lift. Fishing well — get there before it drops out.
90% confidence
What moved it
  • Level1.76 mDropping after lift
  • Water temp8.8°C
  • ClaritySlightly colouredClearing
Today's fly
Parachute Adams
Parachute Adams16–20
Proven pattern for this period
Conditions on the water
Live gauge
Level
Steady
1.76 m
Dropping after lift
Water temp8.8°C
ClaritySlightly coloured
Weather10°C
WindS 18 km/h
Pressure1013 hPa
Rain · recent16.2 mm
Rain · ahead0.0 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
9°C est.ideal 10–16°C
0°14°28°
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 — conditions well-balanced, with water clarity particularly in your favour.
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 3 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Supporters see what else is on the menu.

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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
Brown DunHatch
2
3
3
3
3
3
3
2
Western Green DrakeHatch
2
2
Flav (Small Western Green Drake)Hatch
2
3
2
Mahogany DunHatch
2
2

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

Ranked for today
Brown Trout fly box
SD
Sex Dungeon
2–6 · Pattern
Proven pattern for this period
Beats · 2

The Weber is northern Utah's workhorse trout river — and its sharpest access test. It runs freestone-and-reservoir hybrid from the Uinta foothills down through Oakley and Morgan, with strong wild browns and some rainbows. The catch is that long stretches cross private ranchland where the streambed is private, and Utah's floating-access law does not turn the right to float into a right to wade. There is real public water here — public access points and lawful bridge / right-of-way crossings — but the unknown reaches should be treated as informational until you've checked. Snowmelt blows the river out in late spring and early summer, so the season is really July through October. Fish the verified public access, mind the ranch boundaries, and you'll have a fine, uncrowded northern Utah day; guess wrong and you'll have a stern conversation with a landowner. Verify navigability and access status reach by reach against UDWR before relying on it.

Public access & bridge crossingsPublic
The verified public end of the Weber — designated public access points and lawful bridge / right-of-way crossings around the Oakley and Morgan reaches.
Private ranchland reachesPrivate
Much of the Weber runs through private ranchland with a private streambed.
Permits & access
Permit required — see local rules.
  • Open all year on most reaches
  • ACCESS CAUTION: much of the Weber runs through private ranchland with a private streambed — Utah's floating-access law does not grant a right to wade
  • Treat unverified reaches as informational only; fish verified public access
  • Snowmelt blows it out late spring/early summer — a seasonal suppressor applies.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Gallery · 2
  1. Fishing the Weber River in Croydon, Utah
  2. Terrain map of the venue
    Terrain map
About this water

The Weber is northern Utah's workhorse trout river — a freestone-and-reservoir hybrid that runs from the Uinta foothills down through Oakley and Morgan, holding strong wild browns and some rainbows. It can fish beautifully: pocket water and undercut banks, hoppers in late summer, a good streamer bite for the browns. It's also exactly the river where bad access advice gets you a stern conversation with a landowner. Stretches run through private ranchland where the streambed is private, and the law's floating right is not a wading right. Treat the unknown reaches as informational only until you've checked, fish the verified public access and the bridge crossings, and you'll have a fine, uncrowded northern Utah day.

  • Mixed
Water quality · US Clean Water Act
  • Aquatic life: Impaired
What this classification means

EPA ATTAINS assessment unit 'Weber River-9' (UT16020101-023_00), 2024 Integrated Report. Aquatic Life use: Not Supporting. Listed impairment causes: Oxygen Depletion. 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) · UT16020101-023_00

The full read · show the working · for Brown Trout · confidence 90%
How the 78 is built — score × weight = contribution
Temperature78 × 28%21.8
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity73 × 12%8.8
Conditions total= 78
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