Spate · Granite · Cornwall

River Lynher

A wide view of the River Lynher valley in Cornwall, with moored boats and rolling green hills under a cloudy sky.
Contributor photo

River Lynher

Tim Green - CC BY 2.0

The Lynher is the largest Tamar tributary on the Cornish side — a small, fast spate river off Bodmin Moor that runs through quiet farmland and wooded valleys before joining the Tamar estuary at St Germans.

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
  • Level0.22 m
  • Water temp21.3°C
  • ClarityClear
Today’s fly
SF
Shrimp fly themesmall double / treble
From the river-specific salmon pack.
Conditions on the water
Live gauge
Level
Steady
0.22 m
Water temp21.3°C
ClarityClear
Weather21°C
WindE 13 km/h
Pressure1020 hPa
Rain · recent0.0 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 21.3°C. This is the line where catch-and-release kills atlantic salmon. Do not fish for them today.
Hatch timeline · todayPeak at 6pm

Hatch predictions

Today's headline hatch shown — see all 2 active hatches hour by hour with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

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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. A wide view of the River Lynher valley in Cornwall, with moored boats and rolling green hills under a cloudy sky.
    River Lynher
  2. Terrain map of the venue
    Terrain map
About this water

The Lynher is the largest Tamar tributary on the Cornish side — a small, fast spate river off Bodmin Moor that runs through quiet farmland and wooded valleys before joining the Tamar estuary at St Germans. It is principally a wild brown trout river, with sea trout (peal) on the lower beats from mid-June and an autumn salmon run that follows the lower Tamar. The Pillaton gauge sits low down, so by the time water shows there the upper river is already dropping; the fishery is best read by treating Pillaton as a falling-water indicator rather than a real-time level. Bodmin Moor granite gives the upper river the character of a Dartmoor headwater — short pools, broken pocket water, and the kind of small wild trout that reward 8ft 4wt and a careful walk. 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.

  • Granite
Why this score · for atlantic salmon
  • Temperature130% weight
  • Flow6025% weight
  • Clarity9520% weight
  • Feeding Time8015% weight
  • Pressure9010% weight
Directions
Seasons & zones
  • Salmon1 March → 14 October
  • Trout15 March → 30 September

Sea trout: Variable seasonal (2026)

Related guides
Booking & contacts