Spate · Mixed · Cornwall / Devon border

River Inny

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

The River Inny seen from Bealsmill Bridge, Cornwall.

Tony Atkin, CC BY-SA 2.0

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

Poor · Atlantic Salmon
Shrimp fly theme · small double / treble
Poorlive now
Slow going — better windows ahead
Low and clear — careful approach country. Stale fish in low clear water spook easily — pick your hour.
90% confidence
What moved it
  • Level0.35 m
  • Water temp21.1°C
  • ClarityClear
Today’s fly
SF
Shrimp fly themesmall double / treble
Regional salmon default — river-specific evidence is thin.
Conditions on the water
Live gauge
Level
Steady
0.35 m
Water temp21.1°C
ClarityClear
Weather20°C
WindNE 23 km/h
Pressure1020 hPa
Rain · recent0.1 mm
Rain · ahead0.0 mm

Live readings — water temperature is an estimate where the gauge does not record it.

Water temperature for atlantic salmon
Warm — slow
21°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 21.1°C. This is the line where catch-and-release kills atlantic salmon. Do not fish for them today.
Hatch timeline · todayQuiet day

Hatch predictions

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Beyond the hatch · worth watchingambient prey

Hatch predictions

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Evidence
Survey-backed · regionalModerate confidence

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

Through the year
0–3 scale · July 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
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 1
Probably above the atlantic salmon safety line — these are likely cooler, but carry a thermometer.
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.

  • Mixed
Why this score · for atlantic salmon
  • Temperature130% weight
  • Flow6025% weight
  • Clarity9520% weight
  • Feeding Time8015% weight
  • Pressure8510% weight
Directions
Seasons & zones
  • Salmon1 March → 14 October
  • Trout15 March → 30 September

Sea trout: Variable seasonal (2026)

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Booking & contacts