Stillwater · Slate · Wallonia / East Belgium, BE

Lake Robertville

Lake Robertville — File:Lac de Robertville , Pont Haelen.jpg

Reservoir on the Warche near Malmedy with stocked trout in a scenic Ardennes setting.

Closed season · Rainbow
Blob · 10–12
Closed season
Season reopens 3rd Saturday of March. Try elsewhere.
Closed — confidence not applicable today.

Lake Robertville is often best in spring through autumn.

What moved it
  • WindE 8 km/hLight breeze
Today's fly
Blob
Blob10–12
Retrieve
Conditions on the water
Estimate
Wind
Light breeze
E 8 km/h
N
E
from the east
WaveRipple
Water temp3.4°C
Air temp0°C
CloudOvercast
Pressure1021 hPa
Rain · recent0.0 mm

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

Head to
Wind driftSE wind
North-western end

A southeasterly has held for 6 hours at much the same temperature as the 3°C water. No thermal steer either way, but the drift still stacks food against the north-western end — the bank it is blowing into — so start there. This reads the upper water, though — a bottom bait at range feels it far less than a floater or a fish in the margins. Treat it as a tiebreaker between good swims rather than an override — features and angling pressure usually count for more.

How to fish it · for Rainbow
When
Current conditions suit Lake Robertville well for winter tactics. The ripple should help fish move and feed more confidently.
Where
Start with Diawl Bach (12–14) — on the bob / top dropper — slow figure-of-eight retrieve. Rainbows respond to more active retrieves — try short strips between pauses. If that does not produce, switch depth or speed before changing the pattern entirely.
The plan
Plan A

Start with Diawl Bach (12–14) — on the bob / top dropper — slow figure-of-eight retrieve. Rainbows respond to more active retrieves — try short strips between pauses. If that does not produce, switch depth or speed before changing the pattern entirely.

Plan B

Slow down everything. A booby on a fast-sinking line, left static, can pick up deep fish.

Watch for

Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.

Bank

Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 3 as a supporter.

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Through the year
0–3 scale · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Reservoir BuzzerHatch
2
3
3
3
3
3
2
Lake OliveHatch
2
3
3
3
3
3
2
Silverhorns & LonghornsHatch
1
2
2
2
1

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

Ranked for today
Rainbow fly box

A practical Walloon stillwater pack for Ardennes reservoirs and stocked lakes where stocking history, bank access and wind matter more than classic river drift-fishing. Small lures, buzzers, nymphs and simple streamers belong here.

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
Condition match
73%
Cloud50%
Wind100%
Temp60%

A good match for Lake Robertville — most conditions are close to what it fishes best in.

Other water nearby · 5
Gallery · 2
  1. Lake Robertville — File:Lac de Robertville , Pont Haelen.jpg
    File:Lac de Robertville , Pont Haelen.jpg
  2. Terrain map of the venue
    Terrain map
About this water

Bank fishing and limited boat access available. LRPE permit required.

  • Lake
  • Slate
Water quality (WFD)
  • Ecology: Unknown
  • Chemical: Unknown

WFD classification · BERW06_AM02L

Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
Directions
Seasons & zones
  • Trout 3rd Saturday of March → 30 September
Related guides
Booking & contacts
At a glance

Lake Robertville is a lake in Wallonia / East Belgium. Its recorded elevation is about 528 m above sea level and the catchment geology is slate. Our data lists brown trout and rainbow trout here. The trout season is recorded as running from 3rd Saturday of March to 30 September. Best window recorded for anglers: 3rd Saturday of March – 30 September (Wallonia); spring and early autumn usually best for stocked trout. Core methods listed: Nymph; Dry fly; Wet fly / soft hackle. Nearby waters in our listings include Warche at 7.0 km, Holzwarche at 7.0 km and Lake Bütgenbach at 7.0 km.