Freestone · Mixed · Glasgow, GB-SCT

River Kelvin

The River Kelvin flowing through Glasgow, Scotland, near Maryhill.

The Kelvin is Glasgow's urban trout river — the kind of water that the casual visitor walks over without a second glance and the local fly fisher knows intimately.

Tomorrow · About as good as it gets
G&H Sedge
Forecast · Tomorrow
About as good as it gets
On the feed top to bottom — start on the rises with a dry, drop a nymph if they stay down.
90% projected
Today's fly
G&H Sedge
G&H Sedge
Conditions on the water · Tomorrow
Live gauge
Level
Falling
0.79 m
Dropping after lift
Water temp11.1°C
ClarityClearing
Weather12°C
WindN 22 km/h
Pressure1017 hPa
Rain · recent0.0 mm
Rain · ahead8.7 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
Ideal
11°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
Poor — water temperature is working for you, but water clarity is the limiting factor today.
Likely species
Hatch timeline · tomorrowPeak at 6pm

12pm(now) — Black Gnat

Stage: On emergersApproach: Emerger or dryActivity: 54%
Also:Autumn Olive51%Autumn Needle Fly40%
Peak emergence windowWeather boost8 food groups active

Peak activity at 6pm — Caperer (Caperer, Weather boost)

Sub-surface · on the nymphunder the surface

Hatch predictions

Supporters see the full sub-surface read.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 3 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
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
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
Other water nearby · 5
Gallery · 2
  1. The River Kelvin flowing through Glasgow, Scotland, near Maryhill.
    The River Kelvin near Maryhill, Glasgow.
  2. Terrain map of the venue
    Terrain map
About this water

The Kelvin is Glasgow's urban trout river — the kind of water that the casual visitor walks over without a second glance and the local fly fisher knows intimately. It runs twenty-odd miles from the hills above Kilsyth through Kirkintilloch, Maryhill, and the Botanic Gardens to meet the Clyde under the M8 flyover. For a river that spends most of its lower life threading through housing estates and industrial fringe, it holds an astonishing population of wild brown trout — some of them surprisingly decent fish in the six to twelve ounce range, with the occasional pounder for the angler who knows the good runs. The water recovered remarkably from its industrial past; otters are back, kingfishers nest along the banks, and the trout rise to olives and sedges through the standard Scottish season. The Kelvin Anglers control much of the fishing and issue day tickets. Fish the park water early or late to avoid the dog walkers, work the streamy necks above the old weirs, and keep a low profile — the trout are not stupid, and neither are the cyclists.

  • Mixed
Water quality (WFD)
  • Ecology: Moderate
  • Chemical: Unknown
What this classification means

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

SEPA (Scotland) · UKSC010130

The full read · show the working · for Brown Trout · confidence 45%
How the 30 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow55 × 22%12.1
Clarity15 × 18%2.7
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity59 × 12%7.1
Limiting factor: Water is very coloured — too coloured for Brown Trout= 64
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
A drop and clear would lift the flow and clarity scores.
The dawn and dusk windows score higher than the midday lull.
Related guides
Casting instructors near here
Booking & contacts