Spate · Granite · Devon

River Tavy

River Tavy venue image
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A western Dartmoor spate river running fast over granite into the Tamar.

Poor · Sea Trout
Black & Silver Tube · 1-2 inch
Poorlive now
Slow going — better windows ahead
River dropping into shape after a lift. Cover the water properly, fish each lie once.
55% confidence
What moved it
  • Level0.16 mDropping after lift
  • Water temp15.6°C
  • ClarityUnfishableColouring up
Today’s fly
BS
Black & Silver Tube1-2 inch
In deep pools and dark water, silhouette and contrast do the work colour cannot. A fly that reads as black against depth is enough. Fish it broadside, hold the swing, let it hang at the dangle — that is when the best fish take.
Conditions on the water
Live gauge
Level
Steady
0.16 m
Dropping after lift
Water temp15.6°C
ClarityUnfishable
Weather14°C
WindNW 15 km/h
Pressure1024 hPa
Rain · recent0.3 mm
Rain · ahead1.3 mm

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

Water temperature for sea trout
Warm — slow
16°C est.ideal 815°C
0°14°28°
How to fish it · for sea trout
When
From dusk into the first half of the night.
Where
Deeper pools and slower glides · hold water and current seams.
Method
Fish dark patterns on a sink-tip or lightly sunk line, especially near structure.
Kit
10 ft #6/7 rod, floating line with a sink-tip option, 8–10 lb fluoro tippet for the swing.
Why this works
Poor — barometric pressure is working for you, but water clarity is the limiting factor today. ⏰ Sea trout become most active after dark, but this stretch closes at 21:18 — before that window fully opens. Fish hard in the last legal hour: overcast skies and warm evenings can bring fish on early even in fading light.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 4 active hatches hour by hour 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
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
Sea Trout fly box
BS
Black & Silver TubeTop
1-2 inch · Tube
In deep pools and dark water, silhouette and contrast do the work colour cannot. A fly that reads as black against depth is enough. Fish it broadside, hold the swing, let it hang at the dangle — that is when the best fish take.
SF
Snake Fly (Black)
2-4 inch · Streamer
A mobile eel-like profile that undulates through deep pools — effective when sea trout are lying deep and not responding to conventional wets.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

A western Dartmoor spate river running fast over granite into the Tamar. Salmon and sea trout with wild brown trout in the moorland sections. Short, steep and responsive to rain — classic Devon spate water. 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.

Under the surface

The Tavy rises in the high blanket bog of northern Dartmoor, at Tavy Head just south of Fur Tor and Cut Hill, within half a mile of the sources of the Taw and the Okement. From there it cuts a rough, steep-sided valley south-west, squeezing through the boulder chaos of Tavy Cleave before it emerges among the farmland and runs down past Tavistock to join the Tamar near the tide. It is no gentle lowland river: swift and clean, it crashes over and around a granite bed, rising and falling hard with the moorland weather. The water is acidic and quick-clearing off the granite, peat-stained in spate. The Tavy carries a good run of salmon and the sea trout — peal — for which the Devon rivers are known. Wading is serious granite-boulder work, slick and uneven, and the Cleave in particular is no place to be caught by a rising river.

Wading: Slick granite boulders, fast to rise in Tavy Cleave

  • Granite
  • Partly confined
  • Step pool
  • Pool riffle
Why this score · for sea trout
  • Temperature7728% weight
  • Flow8022% weight
  • Clarity1018% weight
  • Feeding Time4013% weight
  • Pressure857% weight
  • Insect activity2212% weight
Directions
Seasons & zones
  • Salmon1 March → 30 September
  • Trout15 March → 30 September

Sea trout: Variable seasonal (2026)

Salmon: Negligible (2026) — EA 2024 Salmon Stocks Assessment classifies this river 'at risk' — egg deposition below Conservation Limit. Conservation priority; not a salmon fishing destination. The Tavy is one of several West Country rivers in steep decline.

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