Reservoir on the Warche near Malmedy with stocked trout in a scenic Ardennes setting. Bank fishing and limited boat access available. LRPE permit required.
- Lake
- Slate
Rules at a glance
- Permit required
How to fish it · for Rainbow
When
Conditions are not ideal but fishable at Lake Robertville. Flat calm means fish may be spookier — longer leaders and subtler flies will help. Very warm conditions — trout have a narrower safe zone of cool, oxygen-rich water. Fish only at first light or last light, use barbless hooks, keep fish in the water during release, and stop if fish struggle to recover.
Where
Start with Damsel Nymph (10-12) — on the point — slow figure-of-eight retrieve. Early in the day, try buzzers on a slow figure-of-eight or a booby on a fast-sink line near the bottom. Rainbows respond to more active retrieves — try short strips between pauses.
The plan
Plan A
Start with Damsel Nymph (10-12) — on the point — slow figure-of-eight retrieve. Early in the day, try buzzers on a slow figure-of-eight or a booby on a fast-sink line near the bottom. Rainbows respond to more active retrieves — try short strips between pauses.
Plan B
Fish early and late, try deeper during the heat of the day with a fast-sinking line.
Watch for
Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.
Bank
Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
Hatch predictions
Top prey shown — see all 2 with Pro.
Start free trial14-day free trial. Cancel anytime.
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
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
41%
Cloud25%
Wind65%
Temp25%
Conditions are away from Lake Robertville's sweet spot — it usually fishes best in ripple wind with cloud skies.
Other water nearby · 5
Gallery · 2
File:Lac de Robertville , Pont Haelen.jpg Terrain map
About this water
Water quality (WFD)
- Ecology: Unknown
- Chemical: Unknown
WFD classification · BERW06_AM02L
Why this score
- High temperatures may push fish deeper and reduce surface activity.
Directions
Seasons & zones
- Trout 3rd Saturday of March → 30 September
Related guides
Booking & contacts
Lake Robertville
Reservoir on the Warche near Malmedy with stocked trout in a scenic Ardennes setting.
How to fish it · for Rainbow
When
Conditions are not ideal but fishable at Lake Robertville. Flat calm means fish may be spookier — longer leaders and subtler flies will help. Very warm conditions — trout have a narrower safe zone of cool, oxygen-rich water. Fish only at first light or last light, use barbless hooks, keep fish in the water during release, and stop if fish struggle to recover.
Where
Start with Damsel Nymph (10-12) — on the point — slow figure-of-eight retrieve. Early in the day, try buzzers on a slow figure-of-eight or a booby on a fast-sink line near the bottom. Rainbows respond to more active retrieves — try short strips between pauses.
The plan
Plan A
Start with Damsel Nymph (10-12) — on the point — slow figure-of-eight retrieve. Early in the day, try buzzers on a slow figure-of-eight or a booby on a fast-sink line near the bottom. Rainbows respond to more active retrieves — try short strips between pauses.
Plan B
Fish early and late, try deeper during the heat of the day with a fast-sinking line.
Watch for
Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.
Bank
Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
Hatch predictions
Top prey shown — see all 2 with Pro.
Start free trial14-day free trial. Cancel anytime.
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
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
41%
Cloud25%
Wind65%
Temp25%
Conditions are away from Lake Robertville's sweet spot — it usually fishes best in ripple wind with cloud skies.
Other water nearby · 5
Gallery · 2
File:Lac de Robertville , Pont Haelen.jpg Terrain map
About this water
Reservoir on the Warche near Malmedy with stocked trout in a scenic Ardennes setting. 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
- High temperatures may push fish deeper and reduce surface activity.
Directions
Seasons & zones
- Trout 3rd Saturday of March → 30 September
Related guides
Booking & contacts