Freestone · Mixed · Stirlingshire

Allan Water

Allan Water venue image
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The Allan runs off the Ochils and joins the Forth near Bridge of Allan, and for its modest size it is one of the most productive little trout rivers in the Central Belt.

Poor · Brown Trout
Elk Hair Caddis · 12-16
Poorlive now
Not the day for it
River lifting fast on the rain. Take your time — read the water before you cast.
80% confidence
What moved it
  • Level0.56 mLifting fast
  • Water temp20.9°C
  • ClarityVery colouredColouring up
Today’s fly
Elk Hair Caddis
Elk Hair Caddis12-16
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Rising
0.56 m
Lifting fast
Water temp20.9°C
ClarityVery coloured
Weather14°C
WindE 3 km/h
Pressure1020 hPa
Rain · recent11.0 mm
Rain · ahead12.7 mm

Live readings only. Trends shown where the gauge supports them.

Water temperature for brown trout
Warm — slow
20.9°Cideal 1016°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 20.9°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots. Otherwise poor — barometric pressure is in the right range.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 3 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
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
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 1
Water here at 20.9°C — the fishing's alive, but these are cooler if you'd rather rest the warm water.
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

The Allan runs off the Ochils and joins the Forth near Bridge of Allan, and for its modest size it is one of the most productive little trout rivers in the Central Belt. It carries a proper Lowland insect population — big dark olives in March, medium olives through May, caddis in the evenings — and holds wild brown trout throughout. The banks are easy, the wading is straightforward, and the fishing is democratically priced through local clubs with day tickets. A couple of small sea trout run up from the Forth in summer but nobody fishes the Allan for them. You fish it for wild brown trout on spiders and dry fly, which is exactly what it asks of you.

  • Mixed
Water quality (WFD)
  • EcologyModerate
  • ChemicalUnknown
What this classification means

SEPA WFD 2022 — Allan Water: Moderate status. Corrected 2026-06-18 (was recorded Bad). Source: SEPA WFD 2022 classification (spatialdata.gov.scot / SEPA Aquatic Classification Hub).

SEPA (Scotland) · UKSC004601

The full read · show the working · for brown trout · confidence 80%
How the 22 is built — score × weight = contribution
Temperature15 × 28%4.2
Flow55 × 22%12.1
Clarity15 × 18%2.7
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity44 × 12%5.3
Limiting factor: Water temperature (20.9°C) is outside Brown Trout's preferred range (10–16°C)= 38
Can you trust it?
Water temperaturelive gauge readinggauge
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.
A drop and clear would lift the flow and clarity scores.
The dawn and dusk windows score higher than the midday lull.
Related guides
Booking & contacts