Freestone · Mixed · Alaska

Alagnak River

Aerial photograph of the braided channels of the Alagnak Wild River winding through green tundra and boreal forest in southwest Alaska.
Good · Rainbow Trout
Bead · 6-10
Goodlive now
A proper day on the water
River dropping into shape after a lift. Fishing well — get there before it drops out.
75% confidence
What moved it
  • LevelProxyvia Kvichak River (Iliamna outlet)
  • Water temp8.9°C
  • ClaritySlightly colouredClearing
Today's fly
BE
Bead6-10
Dead-drift, sub-surface
Conditions on the water
Proxy gauge
Level
Steady
Proxy
via Kvichak River (Iliamna outlet)
Water temp8.9°C
ClaritySlightly coloured
Weather8°C
WindS 4 km/h
Pressure1013 hPa
Rain · recent8.3 mm
Rain · ahead4.0 mm

No gauge on this water — conditions are inferred from Kvichak River (Iliamna outlet). The trend transfers, the absolute level does not.

Water temperature for Rainbow Trout
Cool — slow
9°C est.ideal 10–18°C
0°14°28°
How to fish it · for Rainbow 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 insect activity could be better.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 3 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

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Evidence
ModelledModerate confidence

Modelled from regional ecology — no survey or occurrence data for this water yet.

Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
1
Western Green DrakeHatch
2
2
Flav (Small Western Green Drake)Hatch
2
3
2
Mahogany DunHatch
2
2
American March BrownHatch
2
3
2

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

Ranked for today
Rainbow Trout fly box
MO
Mouse
2-6 · Pattern
Dead-drift, on top
Permits & access
Permit required — see local rules.
  • Spring rainbow-closure and unbaited single-hook artificial/fly rules typically apply — EMERGENCY-ORDER SENSITIVE; verify current dates, lake exceptions and EOs against ADF&G 2026 Bristol Bay regs
  • No salmon legality claim
  • Remote fly-out/lodge access; high brown-bear density around salmon.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Kvichak River (Iliamna outlet)
29 km
81
Rainbow trout
Moraine Creek
34 km
Rainbow trout
American Creek
35 km
Rainbow trout
Gallery · 2
  1. Aerial photograph of the braided channels of the Alagnak Wild River winding through green tundra and boreal forest in southwest Alaska.
    Aerial view of the braided Alagnak Wild River, Katmai, Alaska
  2. Terrain map of the venue
    Terrain map
The full read · show the working · for Rainbow Trout · confidence 75%
How the 74 is built — score × weight = contribution
Temperature80 × 28%22.4
Flow80 × 22%17.6
Clarity90 × 18%16.2
Feeding Time55 × 13%7.2
Pressure75 × 7%5.3
Insect activity48 × 12%5.8
Conditions total= 75
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Kvichak River (Iliamna outlet)proxy
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout8 June → 31 October
Related guides
Euro Nymphingsubsurface methods
Booking & contacts