Freestone · Volcanic · Honshū, JP

Tadami River

Tadami River 01
Tomorrow · Slow going — pick your moments
Pheasant Tail nymph
Forecast · Tomorrow
Slow going — pick your moments
Slow going — pick your moments and do not force it.
45% projected
Today's fly
Pheasant Tail nymph
Pheasant Tail nymph
Conditions on the water · Tomorrow
Estimate
Level
Heavy rain recently
No gauge reading
Water temp7.7°C
ClarityVery coloured
Weather12°C
WindN 22 km/h
Pressure1010 hPa
Rain · recent29.6 mm
Rain · ahead7.0 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

Water temperature for White-spotted Char
Ideal
8°C est.ideal 7–14°C
0°14°28°
How to fish it · for White-spotted Char
When
Late spring to the autumn closure
Where
The Tadami winds through the deep-snow wilderness of Oku-Aizu, a remote valley of dams, gorges and beech forest where iwana and yamame run wild and the…
Why this works
Excellent — water temperature is right today, though river flow could be better.
Hatch timeline · tomorrowPeak at 11h

12h(now) — Autumn Needle Fly

Stage: Creeping nymphsApproach: Heavy nymphActivity: 23%
Also:Black Midge21%

Peak activity at 11h — Autumn Needle Fly

Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 3 as a supporter.

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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
Stenopsyche CaddisHatch
2
3
3
2
Cicada (Semi)Hatch
2
2
Ephemera strigata (Mid-Reach Keiryu Mayfly)Hatch
2
3
3
3
2
Epeorus latifolium (Riffle Mayfly)Hatch
2
3
3
3
3
3
2

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

Ranked for today
Fly box · White-spotted Char
EH
Elk Hair / Stenopsyche caddis
12–14 · Sedge
Evening sedge — twitch or dead-drift it as the light goes.
CB
Cicada & beetle terrestrials (midsummer)
10–12 · Terrestrial
Fish it tight to the bank on warm, breezy days.
Permits & access
Permit required — see local rules.
  • Co-operative yugyoken required; spawning closure in autumn
  • Confirm reach and access.
What's coming
Plan ahead
5-day outlook
Gallery · 2
  1. Tadami River 01
    River flowing through three prefectures.
  2. Terrain map of the venue
    Terrain map
Conservation note

Wild white-spotted char (iwana) and yamame, some stocked rainbow.

The full read · show the working · for White-spotted Char · confidence 90%
How the 81 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow60 × 22%13.2
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure75 × 7%5.3
Insect activity66 × 12%7.9
Conditions total= 81
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Char late February to April → late September to mid-October

    Honshu/Shikoku/Kyushu keiryu are managed by local fishery co-operatives — a yugyoken (day/annual ticket) is required, and most streams close around 30 September / mid-October for spawning. Species are surfaced in prose only (no engine slugs for yamame, amago or iwana). Legal status: guidance_not_permission.

Related guides
Euro Nymphingsubsurface methods
Booking & contacts