Freestone · Mixed · Glasgow, GB-SCT

River Kelvin

The River Kelvin flowing through Glasgow, Scotland, near Maryhill.
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
Mayflies
Stoneflies
Caddisflies
Gammarids
Hatch timeline · tomorrowPeak at 18:00

12:00(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 18:00 — Caperer (Caperer, Weather boost)

Sub-surface · on the nymphunder the surface

Hatch predictions

Supporters see the full sub-surface read.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 3 as a supporter.

Start free trial

14-day free trial. Cancel anytime.

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
Fly box · Brown Trout
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Loch Ardinning
8.0 km
Brown trout
Carbeth Fishery
8.0 km
Rainbow trout
Endrick Water
17 km
Brown trout · Sea trout · Atlantic salmon
Carman Fishery
19 km
Rainbow trout
Castle Semple Loch
21 km
Rainbow trout · Brown trout
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
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
Scotland Playbookloch & river fishingYorkshire & SpidersNorth Country methodsEuro Nymphingsubsurface methods
Casting instructors near here
Booking & contacts