Freestone · Mixed · South Lanarkshire, GB-SCT

Upper Clyde

A path beside the young River Clyde near Abington, South Lanarkshire, Scotland

The Upper Clyde above Lanark is the Central Belt's proper trout water — a river most people associate with shipyards and wondering what on earth you would fish for, until they see the headwaters above Abington and the conversation stops.

Tomorrow · Closed season
Czech Nymph
Forecast · Tomorrow
Closed season
Out of season. Try elsewhere.
75% projected
Today's fly
Czech Nymph
Czech Nymph
Conditions on the water · Tomorrow
Live gauge
Level
Steady
0.54 m
Water temp6.4°C
ClarityClear
Weather4°C
WindN 21 km/h
Pressure1009 hPa
Rain · recent0.0 mm
Rain · ahead3.0 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
Cool — slow
6°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.
Likely species
Hatch timeline · tomorrowPeak at 11am

12pm(now) — Autumn Needle Fly

Stage: Creeping nymphsApproach: Heavy nymphActivity: 29%
Also:Black Midge26%Autumn Olive21%
Peak emergence window4 food groups active

Peak activity at 11am — Autumn Needle Fly (Autumn Needle Fly, Peak emergence window)

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds 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 · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Daddy Long LegsHatch
2
3
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. A path beside the young River Clyde near Abington, South Lanarkshire, Scotland
    The River Clyde near Abington in the Upper Clyde valley, South Lanarkshire
  2. Terrain map of the venue
    Terrain map
About this water

This is a clean, upland stream running over boulders and gravel, browning up after the summer rain the way a hill stream should, and holding wild brown trout in numbers that would surprise you. Upper Clyde Angling Protective Association manage long stretches; day tickets are accessible and the beats are wadeable throughout. Best fishing is April to June on small wet flies and spiders, then again in September when the fish thicken up before spawning. The Clyde taught a whole generation of Scottish trout fishers how to fish the North Country wet — it still does.

  • Mixed
The full read · show the working · for Brown Trout · confidence 75%
How the 0 is built — score × weight = contribution
Temperature38 × 28%10.6
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity43 × 12%5.2
Conditions total= 63
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Warmer water — toward the 10–16 °C ideal band — would lift the temperature score.
The dawn and dusk windows score higher than the midday lull.
Related guides
Casting instructors near here
Booking & contacts
At a glance

Upper Clyde is a freestone river in South Lanarkshire, Scotland. It sits at about 265 m above sea level. The river is described as roughly 35 km long. The species listed for this water is brown trout. Best window recorded for anglers: April to June, September. Core methods listed: upstream wet fly; North Country spiders; upstream nymph. Level and flow data for this water is linked from 1 gauge. Nearby waters in our listings include Avon Water (Lanarkshire) at 29 km, West Water Reservoir at 35 km and Kailzie Trout and Salmon Fishery at 38 km.