Spate · Slate · Wallonia / East Belgium

Warche

Warche — Warche - Malmedy

The Warche flows through proper Ardennes country — slate and beech forest — and it fishes like an honest working river ought to.

Poor · Brown Trout
Pheasant Tail Nymph · 14-18
Poorlive now
Not the day for it
River temperature is the limiting factor today, not the flow. This is not the day to push it. Check the thermal advice above before you head out.
90% confidence
What moved it
  • Level0.20 mLast reading 3h ago
  • Water temp22.0°C
  • ClarityClear
Today's fly
Pheasant Tail Nymph
Pheasant Tail Nymph14-18
Upstream
Conditions on the water
Live gauge
Level
Steady
0.20 m
Last reading 3h ago
Water temp22.0°C
ClarityClear
Weather27°C
WindS 6 km/h
Pressure1021 hPa
Rain · recent0.0 mm
Rain · ahead1.3 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Brown Trout
Warm — slow
22°C est.ideal 1016°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
Water at 22°C. This is the line where catch-and-release kills brown trout. Do not fish for them today.
Hatch timeline · todayPeak at 6pm

Hatch predictions

Today's headline hatch shown — see all 7 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 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 · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2
Yellow SallyHatch
2
3
2

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

Ranked for today
Brown Trout fly box

A proper Ardennes river-trout pack for Wallonia, centred on clear to lightly coloured rivers with trout and some classic fly-fishing culture.

SB
Small Black Beetle
14-18 · Pattern
Upstream dry
Permits & access
Permit required — see local rules.
  • Permis de pêche (Wallonia) / Visverlof (Flanders)
  • Foreign anglers can purchase online or at post offices without residency.
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 1
Probably above the Brown Trout safety line — these are likely cooler, but carry a thermometer.
Gallery · 2
  1. Warche — Warche - Malmedy
    Warche - Malmedy
  2. Terrain map of the venue
    Terrain map
About this water

The Warche flows through proper Ardennes country — slate and beech forest — and it fishes like an honest working river ought to. Brown trout and grayling share the riffles and pools with easy grace. Good spring olives, summer caddis, the sort of hatch calendar that makes you want to sit down with a river-keeper and a notebook. It responds fast to rain, which means either a gift or a curse depending on when you arrive. Club-managed beats give it a lived-in feeling, the sense that someone's been fishing this water properly for a very long time.

  • Slate
Water quality (WFD)
  • EcologyPoor
  • ChemicalUnknown

WFD classification · BERW06_AM07R

The full read · show the working · for Brown Trout · confidence 90%
How the 12 is built — score × weight = contribution
Temperature6 × 28%1.7
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time85 × 13%11.1
Pressure80 × 7%5.6
Insect activity64 × 12%7.7
Limiting factor: Water temperature (22°C) is outside Brown Trout's preferred range (10–16°C)= 61
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
Directions
Seasons & zones
  • Trout 3rd Saturday of March30 September
Related guides
Booking & contacts