Spate · Mixed · Cornwall / Devon border

River Inny

The River Inny, a large tributary of the River Tamar, flowing beneath Bealsmill Bridge in Cornwall.

The Inny is a small Tamar tributary — Cornish in character, rising above Altarnun and running through wooded country to the Tamar near Greystone Bridge.

Marginal · Atlantic Salmon
Willie Gunn · tube / double
Marginallive now
Marginal — persistence required
Low and clear — careful approach country. Hard going on bright water. Favour cloud and shadow.
80% confidence
What moved it
  • Level0.32 m
  • Water temp18.7°C
  • ClarityClear
Today's fly
Willie Gunn
Willie Gunntube / double
Regional salmon default — river-specific evidence is thin.
Conditions on the water
Live gauge
Level
Steady
0.32 m
Water temp18.7°C
ClarityClear
Weather17°C
WindN 23 km/h
Pressure1019 hPa
Rain · recent0.0 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 Atlantic Salmon
Warm — slow
19°C est.ideal 1014°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Morning into early afternoon.
Where
Pool tails, steadier runs, and any water with pace.
Method
Fish a sensible line-and-fly combination for the height and pace of water.
Kit
13 ft #8/9 double-hander in spate, 10 ft #8 single in low water. Floating line plus a fast-sink tip. 12–15 lb fluoro tippet.
Why this works
Water at 18.7°C — above the atlantic salmon caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Hatch timeline · todayPeak at 6am

Hatch predictions

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Sub-surface · on the nymphunder the surface

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Beyond the hatch · worth watchingambient prey

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Evidence
Survey-backed · regionalHigh confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
2
2
2
2
2
1
Trout seasonSeason
1
2
2
2
2
2
1
Daddy Long LegsHatch
2
3
2
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2

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

Ranked for today
Atlantic Salmon fly box

A small Cornish Tamar tributary — wild browns throughout, peal on the lower river from midsummer. Standard short-rod Westcountry fishing.

What's coming
Plan ahead
5-day outlook
Cooler water nearby · 1
Water here around 19°C — probably warm enough to stress Atlantic Salmon . These are likely cooler.
Gallery · 2
  1. The River Inny, a large tributary of the River Tamar, flowing beneath Bealsmill Bridge in Cornwall.
    The River Inny seen from Bealsmill Bridge, Cornwall.
  2. Terrain map of the venue
    Terrain map
About this water

The Inny is a small Tamar tributary — Cornish in character, rising above Altarnun and running through wooded country to the Tamar near Greystone Bridge. It is principally wild brown trout fishing on Bodmin-fringe water, with sea trout (peal) on the lower beats from mid-June and a small autumn salmon run that follows the lower Tamar. Bealsmill is the only gauge and sits low down, near the Tamar confluence; for the upper river it should be read as a falling-water indicator rather than a real-time level. The Inny has the same kind of intimate pocket-water character as the upper Lynher. Atlantic salmon are assessed by the Environment Agency against each river's Conservation Limit — many principal rivers are classed 'at risk' with mandatory catch-and-release byelaws; check current rules before fishing.

Sea trout here

Summer-autumn runs (June–September), nocturnal peak season pattern

  • Mixed
Why this score · for Atlantic Salmon
  • Temperature1730% weight
  • Flow6025% weight
  • Clarity9520% weight
  • Feeding Time1015% weight
  • Pressure8510% weight
Directions
Seasons & zones
  • Salmon 1 March14 October
  • Trout 15 March30 September

Sea trout: Variable seasonal (2026)

Related guides
Casting instructors near here
Booking & contacts