Spate · Slate · Wallonia / East Belgium, BE

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 52 min ago
  • Water temp22.3°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 52 min ago
Water temp22.3°C
ClarityClear
Weather30°C
WindW 9 km/h
Pressure1014 hPa
Rain · recent0.0 mm
Rain · ahead3.6 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 22.3°C. This is the line where catch-and-release kills brown trout. Do not fish for them today.
Hatch timeline · todayQuiet day

Hatch predictions

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Beyond the hatch · worth watchingambient prey

Hatch predictions

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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.

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
Water here around 22°C. Nothing cooler within range — 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 10 is built — score × weight = contribution
Temperature5 × 28%1.4
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time65 × 13%8.5
Pressure70 × 7%4.9
Insect activity49 × 12%5.9
Limiting factor: Water temperature (22.3°C) is outside Brown Trout's preferred range (10–16°C)= 55
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.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
  • Trout 3rd Saturday of March30 September
Related guides
Booking & contacts