Ardennes reservoir near the German border stocked with brown and rainbow trout. Bank and boat fishing both possible. Requires LRPE permit. Check current stocking schedule before visiting.
- Lake
- Slate
Rules at a glance
- Permit required
How to fish it · for Rainbow
When
Conditions are not ideal but fishable at Lake Bütgenbach. The ripple should help fish move and feed more confidently. 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 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
A fry-imitating pattern stripped through the margins can save a blank in autumn.
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.
Sub-surface · on the nymphunder the surface
Hatch predictions
Supporters see the full sub-surface read.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 3 as a supporter.
Start free trial14-day free trial. Cancel anytime.
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
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
49%
Cloud50%
Wind65%
Temp25%
Conditions are away from Lake Bütgenbach's sweet spot — it usually fishes best in ripple wind with cloud skies.
Water here around 21°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
Terrain map
About this water
Water quality (WFD)
- Ecology: Unknown
- Chemical: Unknown
WFD classification · BERW06_AM01L
Why this score
- autumn conditions with overcast skies and breezy wind.
Directions
Seasons & zones
- Trout 3rd Saturday of March → 30 September
Related guides
Booking & contacts
Lake Bütgenbach
Ardennes reservoir near the German border stocked with brown and rainbow trout.
How to fish it · for Rainbow
When
Conditions are not ideal but fishable at Lake Bütgenbach. The ripple should help fish move and feed more confidently. 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 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
A fry-imitating pattern stripped through the margins can save a blank in autumn.
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.
Sub-surface · on the nymphunder the surface
Hatch predictions
Supporters see the full sub-surface read.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 3 as a supporter.
Start free trial14-day free trial. Cancel anytime.
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
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
49%
Cloud50%
Wind65%
Temp25%
Conditions are away from Lake Bütgenbach's sweet spot — it usually fishes best in ripple wind with cloud skies.
Water here around 21°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
Terrain map
About this water
Ardennes reservoir near the German border stocked with brown and rainbow trout. Bank and boat fishing both possible. Requires LRPE permit. Check current stocking schedule before visiting.
- Lake
- Slate
Water quality (WFD)
- Ecology: Unknown
- Chemical: Unknown
WFD classification · BERW06_AM01L
Why this score
- autumn conditions with overcast skies and breezy wind.
Directions
Seasons & zones
- Trout 3rd Saturday of March → 30 September
Related guides
Booking & contacts