Freestone · Mixed · Perthshire and Angus

River Isla (Tayside)

The River Isla flowing past Bridge of Dillavaird in Perthshire, Scotland, on its course to join the River Tay at Cargill.
Fair · Atlantic Salmon
Fairlive now
Decent — worth a look
Low and clear — careful approach country. Low water tactics — small singles, riffling hitch in the smooth glides.
75% confidence
What moved it
  • Level0.37 mLast reading 59 min ago
  • Water temp15.1°C
  • ClarityClear
Conditions on the water
Live gauge
Level
Steady
0.37 m
Last reading 59 min ago
Water temp15.1°C
ClarityClear
Weather14°C
WindW 11 km/h
Pressure1017 hPa
Rain · recent0.0 mm
Rain · ahead0.6 mm

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

Water temperature for Atlantic Salmon
Warm — slow
15°C est.ideal 10–14°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
Fair conditions based on river hydrology and migration patterns.
Hatch timeline · todayPeak at 6am

Hatch predictions

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Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey

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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
Salmon runRun
1
2
2
2
2
2
2
2
2
1
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.

What's coming
Plan ahead
5-day outlook
Other water nearby · 5
River Tummel
36 km
50
Atlantic salmon · Brown trout · Grayling
Tay
14 km
Brown trout · Salmon · Sea trout
River Earn
28 km
Atlantic salmon · Brown trout · Sea trout
South Esk
33 km
Brown trout · Salmon · Sea trout
River Eden (Fife)
33 km
Brown trout
Gallery · 2
  1. The River Isla flowing past Bridge of Dillavaird in Perthshire, Scotland, on its course to join the River Tay at Cargill.
    The River Isla at Bridge of Dillavaird, Perthshire, looking downstream towards its confluence with the Tay.
  2. Terrain map of the venue
    Terrain map
The full read · show the working · for Atlantic Salmon · confidence 75%
How the river scores — hydrology factors
Water heightMedium Ideal0.0
Recent riseNone0.0
Falling after liftNot Applicable0.0
Water temperatureCool To Moderate0.0
Time in seasonOpening Period0.0
ClarityClearing0.0
Hydrology base0.0
Legal gate: Unknown Check Local Rules
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Salmon 15 January → 15 October

Sea trout: Variable seasonal (2026)

Related guides
Scotland Playbookloch & river fishingAtlantic Salmonsalmon tacticsGrayling Playbookgrayling tactics
Casting instructors near here
Booking & contacts