Freestone · Mixed · South Lanarkshire

Avon Water (Lanarkshire)

A rocky, tree-lined stretch of the River Avon (Lanarkshire) with shallow water running over boulders.

The Avon is the Clyde's nearest major tributary on the south side and a proper little trout river — fast, tumbling, and the kind of water where a short rod and a few spider patterns is all the equipment you actually need.

Poor · Brown Trout
Elk Hair Caddis · 12-16
Poorlive now
Not the day for it
River temperature is the limiting factor today, not the flow. This is not the day to push it. Check the thermal advice above before you head out.
90% confidence
What moved it
  • Level0.34 mLast reading 8h ago
  • Water temp22.0°C
  • ClarityClear
Today's fly
Elk Hair Caddis
Elk Hair Caddis12-16
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.34 m
Last reading 8h ago
Water temp22.0°C
ClarityClear
Weather22°C
WindSW 14 km/h
Pressure1019 hPa
Rain · recent0.3 mm
Rain · ahead1.1 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
22°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
Water at 22°C. This is the line where catch-and-release kills brown trout. Do not fish for them today.
Hatch timeline · todayPeak at 6am

Hatch predictions

Today's headline hatch shown — see all 9 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds 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 · 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
Daddy Long LegsHatch
2
3
2
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1

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

Ranked for today
Brown Trout fly box

A balanced Scottish river profile. Early season nymphs and spiders, then more dry-fly and emerger fishing as hatches strengthen on steadier glides and richer water.

What's coming
Plan ahead
5-day outlook
Water here around 22°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
  1. A rocky, tree-lined stretch of the River Avon (Lanarkshire) with shallow water running over boulders.
    River Avon
  2. Terrain map of the venue
    Terrain map
About this water

The Avon is the Clyde's nearest major tributary on the south side and a proper little trout river — fast, tumbling, and the kind of water where a short rod and a few spider patterns is all the equipment you actually need. It runs off the Lanarkshire hills through farmland and wooded gorges, gathering colour quickly after rain and dropping clear almost as quickly, which is exactly what a wild trout fisher wants. The fishing is controlled by the Avon Angling Association; day tickets are available, and the beats are wadeable with care. Best in April and May when the large dark olives are hatching, and again in early autumn. Not a river to make you famous — just a reliable few hours of wild trout on small flies, which is quite a lot when you think about it.

  • Mixed
The full read · show the working · for Brown Trout · confidence 90%
How the 12 is built — score × weight = contribution
Temperature6 × 28%1.7
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity62 × 12%7.4
Limiting factor: Water temperature (22°C) is outside Brown Trout's preferred range (10–16°C)= 58
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Related guides
Scotland Playbookloch & river fishingYorkshire & SpidersNorth Country methodsEuro Nymphingsubsurface methods
Casting instructors near here
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