Chalk · Pas-de-Calais / Montreuil, FR

Course

Beussent - Vue de la Course
Poor · Brown Trout
Parachute Adams · 14-16
Closed season
Out of season. Try elsewhere.
Closed — confidence not applicable today.
What moved it
  • LevelProxyvia Scie
  • Water temp14.5°C
  • ClarityClear
Today's fly
Parachute Adams
Parachute Adams14-16
Upstream dry
Conditions on the water
Proxy gauge
Level
Steady
Proxy
via Scie
Water temp14.5°C
ClarityClear
Weather17°C
WindSW 20 km/h
Pressure1018 hPa
Rain · recent0.0 mm
Rain · ahead0.8 mm

No gauge on this water — conditions are inferred from Scie. The trend transfers, the absolute level does not.

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.
Likely species
Stoneflies
Gammarids
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 12 active hatches hour by hour as a supporter.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 2 as a supporter.

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Evidence
Survey-backed · regionalHigh confidence

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

Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Brown SedgeHatch
2
3
3
3
2
Small SpurwingHatch
2
3
3
3
2
Small Dark OliveHatch
2
3
3
3
2

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

Ranked for today
Fly box · Brown Trout
Permits & access
Permit required — see local rules.
  • AAPPMA access
  • Small water — low angler density expected but verify beats locally
  • Fly-only typical.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Canche
17 km
0
Brown trout · Grayling · Sea trout
Liane
18 km
0
Brown trout · Sea trout
Lys (headwaters)
26 km
Brown trout
Pisciculture de Wail
33 km
Rainbow trout
Pisciculture de Monchel
40 km
Rainbow trout
Gallery · 2
  1. Beussent - Vue de la Course
  2. Terrain map of the venue
    Terrain map
The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity67 × 12%8.0
Conditions total= 84
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Scieproxy
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
  • Trout 2. Saturday im March → 3. Sunday im September
Related guides
Chalkstream Playbookchalk stream tacticsPyrenees PlaybookFrench riversEuro Nymphingsubsurface methods
Casting instructors near here
Booking & contacts