Spate · Granite · Honshū, JP

Miomote River

Miomotegawa river

The Miomote falls out of the snow country of northern Niigata, a powerful river famed for the sea-run cherry salmon — sakuramasu — that climb it in spring, and for resident yamame and iwana above.

Good · White-spotted Char
Tenkara kebari (reverse-hackle) · 12–16
Goodlive now
A proper day on the water
Low and clear — careful approach country. Stay small, stay accurate.
90% confidence
What moved it
  • LevelModerate rain recentlyNo gauge reading
  • Water temp8.0°C
  • ClarityClear
Today's fly
Tenkara kebari (reverse-hackle)
Tenkara kebari (reverse-hackle)12–16
A dependable searching pattern for these waters.
Conditions on the water
Estimate
Level
Moderate rain recently
No gauge reading
Water temp8.0°C
ClarityClear
Weather11°C
WindN 13 km/h
Pressure1013 hPa
Rain · recent10.9 mm
Rain · ahead29.3 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 after the thaw, into autumn
Where
The Miomote falls out of the snow country of northern Niigata, a powerful river famed for the sea-run cherry salmon — sakuramasu — that climb it in spring,…
Why this works
Good — water temperature 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 as a supporter.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Supporters see the full sub-surface read.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

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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
Cicada (Semi)Hatch
2
2
Stenopsyche CaddisHatch
2
3
3
2
Autumn DunHatch
2
3
2
Ephemera strigata (Mid-Reach Keiryu Mayfly)Hatch
2
3
3
3
2

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

Ranked for today
White-spotted Char fly box
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; sakuramasu are often specially regulated or restricted — verify before targeting
  • Spawning closure in autumn.
What's coming
Plan ahead
5-day outlook
Gallery · 2
  1. Miomotegawa river
    River in Niigata Prefecture.
  2. Terrain map of the venue
    Terrain map
About this water

Big snowmelt water, heavy in the thaw and clearing into summer, with a strong fishing culture in the valley towns below.

Under the surface

A strong snow-country river off the northern Niigata mountains, running heavy with the spring thaw and clearing through summer. Sea-run sakuramasu ascend in spring; yamame and iwana hold in the resident water above. Big, serious keiryu in deep-snow country.

Wading: Heavy snowmelt flows, powerful water

  • River
  • Granite
  • Partly confined
  • Pool riffle
  • Large river
Conservation note

White-spotted char (iwana), yamame, and the sea-run cherry salmon sakuramasu (the migratory form of yamame); sakuramasu are conservation-sensitive and often restricted.

The full read · show the working · for White-spotted Char · confidence 90%
How the 79 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 activity57 × 12%6.8
Conditions total= 80
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
At a glance

Miomote River is a spate river in Honshū — Niigata (Murakami), Japan. The catchment geology is recorded as granite, and the water sits at about 37 m above sea level. Species listed for this water: white spotted char and yamame. Best window recorded for anglers: Late spring after the thaw, into autumn. Core methods listed: Tenkara/fly in resident water.