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

Saâne

Saâne terrain map
Terrain map

Normandy chalk stream with rich character — clear, spring-fed, home to wild brown trout and grayling that have had generations to become sophisticated.

Good · Brown Trout
Spent Spinner · 16-20
Goodlive now
A proper day on the water
Low and clear — careful approach country. Stay small, stay accurate.
75% confidence
What moved it
  • LevelDry recentlyNo gauge reading
  • Water temp14.6°C
  • ClarityClear
Today’s fly
Spent Spinner
Spent Spinner16-20
Upstream dry
Conditions on the water
Estimate
Level
Dry recently
No gauge reading
Water temp14.6°C
ClarityClear
Weather13°C
WindW 9 km/h
Pressure1023 hPa
Rain · recent0.0 mm
Rain · ahead1.8 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

Water temperature for brown trout
Ideal
15°C est.ideal 10–16°C
0°14°28°
How to fish it · for brown trout
When
Through the open trout season. Iron Blue and CDC grannom in April; olives through May; sedges through summer evenings.
Where
Pool tails and weeded glides through the small chalk-stream stretches. The Saâne is intimate Normandy chalk water.
Method
Upstream dry to spotted rising fish; long fine leader. The water reads clear — careful approach matters more than fly choice. Move slowly upstream, cast accurately, accept the result.
Kit
9 ft #4 — French karst-stream default. Floating line, 14 ft leader to 4 lb fluoro. Polarising glasses non-negotiable.
Why this works
Good — 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 9 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
Béthune / Eaulne
2.0 km
80
Brown trout · Grayling · Sea trout
Scie
10 km
Brown trout · Grayling
Paradis Aquatique
17 km
Rainbow trout
Yères
26 km
Brown trout · Grayling
Arques
32 km
80
Brown trout · Grayling · Sea trout
About this water

Normandy chalk stream with rich character — clear, spring-fed, home to wild brown trout and grayling that have had generations to become sophisticated. Selective water demanding small, precise presentations. Classic mayfly, olive, and sedge hatches (April–June best). Grayling winter fishing effective. Stable temperature from chalk geology. Some beats private; public access available. Check AAPPMA.

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

WFD classification · FRHR169

The full read · show the working · for brown trout · confidence 75%
How the 75 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow60 × 22%13.2
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity47 × 12%5.6
Conditions total= 75
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