River · Mixed · West Country / Devon, GB-ENG

The Arundell Arms Hotel & Fishery

A small, clear West Country river flanked by trees and daffodils, with a stone farmhouse visible beyond the bank.
Prime · Brown Trout
Partridge and Orange · 14-16
Primelive now
About as good as it gets
River steady at a fishable height. On the feed top to bottom — start on the rises with a dry, drop a nymph if they stay down.
90% confidence
What moved it
  • Level0.48 mLast reading 3h ago
  • Water temp16.4°C
  • ClarityClear
Today's fly
Partridge and Orange
Partridge and Orange14-16
Upstream, in the film
Conditions on the water
Live gauge
Level
Steady
0.48 m
Last reading 3h ago
Water temp16.4°C
ClarityClear
Weather20°C
WindSE 33 km/h
Pressure1006 hPa
Rain · recent2.7 mm
Rain · ahead24.3 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Brown Trout
Warm — slow
16°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Excellent — water clarity is right today, though time of day could be better.
Likely species
Stoneflies
Caddisflies
Chironomids
Gammarids
Hatch timeline · todayPeak at 17 Uhr

Hatch predictions

Today's headline hatch shown — see all 12 active hatches hour by hour as a supporter.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 5 as a supporter.

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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 · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
2
2
2
2
2
2
1
Trout seasonSeason
1
2
2
2
2
1
Daddy Long LegsHatch
2
3
2
CapererHatch
2
3
3
2
Hawthorn FlyHatch
2
2
GrannomHatch
2
2

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

Ranked for today
Fly box · Brown Trout
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
River Inny
5.0 km
Brown trout · Sea trout · Salmon
River Tamar
8.0 km
Brown trout · Salmon · Sea trout
River Lynher
12 km
76
Brown trout · Sea trout · Salmon
River Tavy
19 km
Brown trout · Salmon · Sea trout
River Walkham
20 km
Brown trout · Sea trout
Gallery · 2
  1. A small, clear West Country river flanked by trees and daffodils, with a stone farmhouse visible beyond the bank.
    River Lyd at Sydenham
  2. Terrain map of the venue
    Terrain map
The full read · show the working · for Brown Trout · confidence 90%
How the 81 is built — score × weight = contribution
Temperature86 × 28%24.1
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity76 × 12%9.1
Conditions total= 81
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Salmon 1 February → 31 October
  • Trout 1 April → 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 Tamar system (Arundell Arms beats) is at risk; salmon are now scarce on these waters.

Related guides
Trout Near Londonaccess guideEuro Nymphingsubsurface methods
Casting instructors near here
Booking & contacts