Chalk · Normandy / Seine-Maritime (Criel-sur-Mer)

Yères

Yères terrain map
Terrain map

The Yères is the quietest of the Seine-Maritime chalk streams, running for sixty-odd kilometres from its rise near Fresnoy-Folny down to the sea at Criel-sur-Mer.

Species

A proper day on the water

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

75% 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
  • Temperature8428% weight
  • Flow6022% weight
  • Clarity9518% weight
  • Feeding Time5013% weight
  • Pressure807% weight
  • Prey Activity4912% weight
Conditions
Level
Dry recently
No gauge reading
Water temp
9.1°C
Estimated
Clarity
Clear
Air temp
11°C
Wind
SW 28 km/h
Moderate breeze
Pressure
1011 hPa
Rain · 48h
0.1 mm
No meaningful rain
Rain · ahead
6.1 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 (49).
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.

Permits & access
Permit required — see local rules.
  • AAPPMA access
  • Lower pressure than Arques or Bresle
  • Several fly-only parcours.
Directions
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About this water

The Yères is the quietest of the Seine-Maritime chalk streams, running for sixty-odd kilometres from its rise near Fresnoy-Folny down to the sea at Criel-sur-Mer. It's pure chalk — clear, cold, stable, slightly less buffered than the bigger Normandy rivers but still running within five or six degrees of its annual mean — and it holds wild brown trout throughout, with grayling in the better pools below Sept-Meules. Not a river of monsters. The average fish is modest and the technique is classic: small flies, fine tippets, long leaders, patience. Mayfly through the third week of May, sedges through June, and blue-winged olives into September. AAPPMA access for most of the length. A good choice when the Arques or the Bresle are too crowded and you want a quiet day on water that rewards knowing how to read it.

  • Chalk
Seasons & zones
  • Trout2nd Saturday of March → 3rd Sunday of September
  • Grayling3rd Saturday of May → 31 December
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