Chalk · Normandy / Seine-Maritime (Coastal chalk stream)

Durdent

Durdent venue image
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Small Normandy chalk stream with quiet character and consistent flow.

Species

A proper day on the water

Low and clear — careful approach country. Stay small, stay accurate.

90% confidence in this read
Water temperature for brown trout
Cool — slow
9°C est.ideal 10–16°C
0°14°28°
Why this score · for brown trout
  • Temperature8028% weight
  • Flow6022% weight
  • Clarity9518% weight
  • Feeding Time7013% weight
  • Pressure807% weight
  • Prey Activity5312% weight
Conditions
Level
Dry recently
No gauge reading
Water temp
8.9°C
Estimated
Clarity
Clear
Air temp
10°C
Wind
S 15 km/h
Gentle breeze
Pressure
1012 hPa
Rain · 48h
0.9 mm
No meaningful rain
Rain · ahead
4.9 mm
Light rain · next 48h

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

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
Good conditions. Clarity is favourable (95), Prey activity is weakest (53).
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Grayling seasonSeason
1
2
2
2
2
2
2
1
Large Dark OliveHatch
1
2
2
1
March BrownHatch
1
2
1
Iron BlueHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1

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

Gallery · 1
  1. Terrain map of the venue
    Terrain map
Permits & access
Permit required — see local rules.
  • AAPPMA permits.
Directions
Apple MapsGoogle Maps
About this water

Small Normandy chalk stream with quiet character and consistent flow. Wild brown trout and grayling respond to seasonal insect patterns. Clear water, stable temperature typical of chalk geology. Small flies required: olives and ephemeralids (16–18), sedges (14–16) in evening. Presentation matters more than fly choice. Some stretches private. Check access with local club.

  • Chalk
Seasons & zones
  • Trout2nd Saturday of March → 3rd Sunday of September
  • Grayling3rd Saturday of May → 31 December
Other water nearby · 5
Booking & contacts