Freestone · Mixed · Cumbria / Hadrian's Wall country (Eden tributary), GB-ENG

River Irthing

River Irthing venue image

A flashy Pennine-fringe tributary of the Eden, rising on the peat mosses of Spadeadam Waste on the Cumbria–Northumberland border and cutting west through Hadrian's Wall country — past the Roman fort at Birdoswald and the gorge at Gilsland — before easing down through Brampton to join the Eden near Warwick Bridge.

Tomorrow · Not the day for it
Pheasant Tail Nymph
Forecast · Tomorrow
Not the day for it
Not much stacked in your favour today. Worth an hour if you are nearby, not worth the special trip.
45% projected
Today's fly
Pheasant Tail Nymph
Pheasant Tail Nymph
Conditions on the water · Tomorrow
Proxy gauge
Level
Rising
Proxy
via River Eden
Water temp8.5°C
ClarityUnfishable
Weather6°C
WindN 35 km/h
Pressure993 hPa
Rain · recent2.2 mm
Rain · ahead5.8 mm

No gauge on this water — conditions are inferred from River Eden. The trend transfers, the absolute level does not.

Water temperature for Grayling
Ideal
9°C est.ideal 4–14°C
0°14°28°
How to fish it · for Grayling
When
Midday window — grayling feed best from late morning into early afternoon.
Where
Work runs and glides — grayling shoal in the bottom third of the water column.
Method
Tight-line nymph the bottom third with weighted patterns.
Kit
10 ft #3 rod, floating line, long leader to 4 lb fluoro for nymphs.
Why this works
Excellent — conditions well-balanced, with water temperature particularly in your favour. Grayling feeds actively in cold water — peak winter sport.
Likely species
Mayflies
Stoneflies
Caddisflies
Gammarids
Hatch timeline · tomorrowPeak at 1pm

12pm(now) — Iron Blue

Stage: On emergersApproach: Emerger or dryActivity: 35%
Weather boost

Peak activity at 1pm — Iron Blue (Iron Blue, Weather boost)

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Supporters see what else is on the menu.

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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 · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Grayling seasonSeason
2
2
1
1
2
2
2
2
2
2
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
Grayling fly box

Spider-heavy and practical. Strong tradition of North Country soft hackles, useful nymphing, and simple dry flies when fish rise properly.

Permits & access
Permit required — see local rules.
  • Brampton AA association water; grayling access sold from 1 October (statutory season opens 16 June)
  • Confirm current association rules for methods, day tickets and beats before travelling.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
River Eden
11 km
85
Brown trout · Grayling · Salmon
Border Esk
30 km
Brown trout · Salmon · Sea trout
River Eamont
37 km
71
Brown trout · Grayling
Annan
38 km
Brown trout · Salmon · Sea trout
River Tyne
41 km
86
Brown trout · Salmon · Sea trout
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

A flashy Pennine-fringe tributary of the Eden, rising on the peat mosses of Spadeadam Waste on the Cumbria–Northumberland border and cutting west through Hadrian's Wall country — past the Roman fort at Birdoswald and the gorge at Gilsland — before easing down through Brampton to join the Eden near Warwick Bridge. It responds quickly to hill rain and clears just as fast. Wild brown trout throughout, and a genuine head of grayling that the local association fishes as a winter product: the statutory grayling season opens in June, but access is sold from October when the trout season has closed. North Country spider water in summer, and honest winter grayling fishing on falling, clearing water thereafter.

  • River
  • Mixed
The full read · show the working · for Grayling · confidence 90%
How the 86 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time85 × 13%11.1
Pressure80 × 7%5.6
Insect activity68 × 12%8.2
Conditions total= 86
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via River Edenproxy
Prey activitysurvey-backed invertebrate datasurvey
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 25 March → 30 September
  • Grayling 16 June → 14 March

    Statutory grayling window is 16 June – 14 March, but Brampton AA typically sells grayling on the Irthing as a winter product from 1 October to mid-March. Confirm current association rules for methods and access before travelling.

    Legally open from 16 June, but access is typically sold from 1 October.

    Prime sport 1 October → 28 February

Related guides
Grayling Playbookgrayling tacticsYorkshire & SpidersNorth Country methodsTrout Near Londonaccess guide
Casting instructors near here
Booking & contacts