Freestone · Mixed · Peak District / Derbyshire

River Derwent (Derbyshire)

River Derwent (Derbyshire) terrain map
Terrain map

Two rivers in one: the upper Derwent above Baslow is fast gritstone moorland water (small flies, duller colours), becoming limestone freestone from Baslow onwards through Derbyshire.

Prime · Brown Trout
Greenwell's Glory · 16-18
Primelive now
About as good as it gets
Low and clear — careful approach country. Take your time — read the water before you cast.
75% confidence
What moved it
  • Level0.05 m
  • Water temp14.8°C
  • ClarityClear
Today’s fly
Greenwell's Glory
Greenwell's Glory16-18
Upstream dry, on top
Conditions on the water
Live gauge
Level
Steady
0.05 m
Water temp14.8°C
ClarityClear
Weather13°C
WindW 9 km/h
Pressure1021 hPa
Rain · recent2.0 mm
Rain · ahead1.6 mm

Live readings — water temperature is an estimate where the gauge does not record it.

Water temperature for brown trout
Ideal
15°C est.ideal 10–16°C
0°14°28°
How to fish it · for brown trout
When
Olives April through May; Mayfly late May where it shows; sedges through summer; small dark flies into October. Peak District weather changes fast.
Where
Upper Derwent above Bamford is tight pocket water; the middle river through Hathersage and Calver runs through productive trout water.
Method
Upstream dry to risers when olives or sedges are off; North Country spider on the swing in cooler water — Snipe and Purple, Partridge and Orange, Waterhen Bloa. Move upstream slowly, fish each lie properly.
Kit
9 ft #4 — Yorkshire freestone default. Floating line, 9 to 12 ft leader to 4 to 5 lb fluoro. Studded boots for slick stones.
Why this works
Excellent — water temperature is working for you, but time of day is the limiting factor today.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 10 active hatches hour by hour with Pro.

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Evidence
Survey-backed · regionalModerate confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · July 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
2
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1

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

Ranked for today
Brown Trout fly box
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Derbyshire Wye
6.0 km
Brown trout · Rainbow trout · Grayling
Barlow Country Club Fishery
8.0 km
Rainbow trout · Brown trout
Press Manor Fishing Lakes
13 km
Rainbow trout · Brown trout · Blue trout
Ladybower Reservoir
17 km
Brown trout · Rainbow trout
Ogston Reservoir (Fisherman's Carpark)
17 km
Rainbow trout · Brown trout
About this water

Two rivers in one: the upper Derwent above Baslow is fast gritstone moorland water (small flies, duller colours), becoming limestone freestone from Baslow onwards through Derbyshire. The upper reaches offer varied character (riffles, glides, pools); the limestone sections have better hatches. The Wye tributary at Bakewell is arguably better trout water than the main river itself. Good grayling throughout the middle reaches. The transition from gritstone to limestone means adapting your approach as you fish downstream. Club and association water with some day tickets available.

  • Mixed
Water quality (WFD)
  • Ecology: Moderate
  • Chemical: Unknown

EA (England) · UKGB104028052390

The full read · show the working · for brown trout · confidence 75%
How the 80 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity51 × 12%6.1
Conditions total= 80
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
Apple MapsGoogle Maps
Seasons & zones
  • Trout22 March → 30 September
  • Grayling16 June → 14 March
Related guides
Grayling Playbookgrayling tacticsYorkshire & SpidersNorth Country methodsTrout Near Londonaccess guide
Booking & contacts