Chalk · Normandy / Seine-Maritime (Dieppe area)

Scie

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Small Normandy chalk stream flowing toward the Seine estuary where spring water keeps temperature stable and trout selective.

Prime · Brown Trout
Spent Spinner · 16-20
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
  • Level0.40 mLast reading 1h ago
  • Water temp14.7°C
  • ClarityClear
Today’s fly
Spent Spinner
Spent Spinner16-20
Upstream dry
Conditions on the water
Live gauge
Level
Steady
0.40 m
Last reading 1h ago
Water temp14.7°C
ClarityClear
Weather13°C
WindW 15 km/h
Pressure1023 hPa
Rain · recent0.0 mm
Rain · ahead0.9 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
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
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 11 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
1
2
2
2
2
2
2
1
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
1

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

Ranked for today
Brown Trout fly box
Permits & access
Permit required — see local rules.
  • AAPPMA permits.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Saâne
10 km
75
Brown trout · Grayling
Béthune / Eaulne
12 km
80
Brown trout · Grayling · Sea trout
Paradis Aquatique
14 km
Rainbow trout
Yères
23 km
71
Brown trout · Grayling
Durdent
28 km
80
Brown trout · Grayling
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

Small Normandy chalk stream flowing toward the Seine estuary where spring water keeps temperature stable and trout selective. Wild brown trout and grayling. Classic patterns: small olives and ephemeralids (16–18), sedges (14–16) evening. Pocket water where reading current and understanding trout lies matters more than distance casting. Some access restricted; check AAPPMA.

  • Chalk
Water quality (WFD)
  • Ecology: Good
  • Chemical: Unknown

WFD classification · FRHR167

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
  • Trout2nd Saturday of March → 3rd Sunday of September
  • Grayling3rd Saturday of May → 31 December
Related guides
Chalkstream Playbookchalk stream tacticsGrayling Playbookgrayling tacticsPyrenees PlaybookFrench rivers
Booking & contacts