Spate · Sandstone · North York Moors / Whitby, GB-ENG

River Esk (North Yorkshire Moors)

The River Esk flowing through a wooded valley below Glaisdale on the North Yorkshire Moors

Moorland spate river where you might catch a trout on a Snipe & Purple in the morning and a sea trout at dusk — versatility is the game.

Good · Brown Trout
Pheasant Tail Nymph · 14-16
Goodlive now
A proper day on the water
Low and clear — careful approach country. Stay small, stay accurate.
75% confidence
What moved it
  • Level0.08 m
  • Water temp16.7°C
  • ClarityClear
Today's fly
Pheasant Tail Nymph
Pheasant Tail Nymph14-16
Upstream, sub-surface
Conditions on the water
Live gauge
Level
Steady
0.08 m
Water temp16.7°C
ClarityClear
Weather14°C
WindSW 10 km/h
Pressure1019 hPa
Rain · recent0.0 mm
Rain · ahead6.8 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
Warm — slow
17°C est.ideal 1016°C
0°14°28°
How to fish it · for Brown Trout
When
Olives April through May; sedges through summer evenings; small dark flies into October. The Esk is small spate water — fish the drop after rain.
Where
Upper Esk above Glaisdale is tight moorland pocket water; the lower river through Egton holds longer pools. The whole river is small-scale.
Method
Upstream dry or dry-dropper to risers; North Country spider on the swing in cooler water. The Esk is a small river — short casts, careful approach.
Kit
8'6 to 9 ft #4 — small Pennine spate. Floating line, 9 ft leader to 4 lb fluoro. Studded boots.
Why this works
Good — water clarity is right today, though time of day could be better.
Hatch timeline · todayPeak at 6am

Hatch predictions

Today's headline hatch shown — see all 11 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 4 guilds with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

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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
1
Daddy Long LegsHatch
2
3
2
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Brown Trout fly box
North Country spider water

A moorland river of two minds — a trout on a spider by morning, a sea trout at dusk. The peat stain forgives a heavier hand and rewards a darker fly.

Local classics: Snipe & Purple·Partridge & Orange·Waterhen Bloa
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Gallery · 2
  1. The River Esk flowing through a wooded valley below Glaisdale on the North Yorkshire Moors
    The River Esk below Glaisdale, North Yorkshire Moors
  2. Terrain map of the venue
    Terrain map
About this water

Moorland spate river where you might catch a trout on a Snipe & Purple in the morning and a sea trout at dusk — versatility is the game. Fast response (4 hours) and broken water suit darker flies and bolder presentation than chalk streams. The water often carries peat stain after rain — fish darker spiders and bigger wets when conditions darken. Salmon and sea trout run April–October; brown trout throughout. Flexible access via local ticketing (Danby, Egton Bridge, Ruswarp) — contact ahead for best options. The Esk Fishery Association controls roughly eight miles of named beats including Lealholm, Glaisdale, Limber Hill and Sleights; membership has a joining fee, an annual subscription and (for adults) a waiting list. Visitor day tickets are available only on a limited stretch via boat hire at Ruswarp. Sandstone freestone bedrock underlies this river. Atlantic salmon are assessed by the Environment Agency against each river's Conservation Limit — many principal rivers are classed 'at risk' with mandatory catch-and-release byelaws; check current rules before fishing.

Sea trout here

Summer-autumn runs (June–September), nocturnal peak season pattern

  • Sandstone
Water quality (WFD)
  • EcologyGood
  • ChemicalFail
What this classification means

EA waterbody 'Esk from Sleddale Beck to Ruswarp' (GB104027068150) — the lowest non-tidal main stem of the North York Moors Esk (Sleights/Grosmont down to the Ruswarp tidal limit above Whitby). Latest EA data (Cycle 3, 2022): Good ecological status. Chemical 'Fail' reflects the England-wide ubiquitous-substance failure (mercury and PBDE in biota); the 2022 cycle itself records chemical as 'does not require assessment'. Corrected 2026-06-18 from GB104027068710, which is East Row Beck (a separate coastal beck), not the Esk.

EA (England) · GB104027068150

The full read · show the working · for Brown Trout · confidence 75%
How the 77 is built — score × weight = contribution
Temperature83 × 28%23.2
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time50 × 13%6.5
Pressure80 × 7%5.6
Insect activity60 × 12%7.2
Conditions total= 77
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
  • Salmon 1 March31 October

Sea trout: Variable seasonal (2026)

Salmon: Negligible (2026) — EA 2024 Salmon Stocks Assessment classifies this river 'at risk' — egg deposition below Conservation Limit. Conservation priority; not a salmon fishing destination.

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