Stillwater · Slate · Wallonia / East Belgium

Eupen Reservoir

Protected drinking-water reservoir near Eupen in the Hertogenwald forest where angling access is highly conditional and may be prohibited or heavily restricted.

Marginal · Rainbow
Damsel Nymph · 10-12
A patient day, if you fancy it
Glassy and bright — hard work without a breeze. A flat lough is a quiet lough — wait for the breeze.
44% confidence
limited data
What moved it
  • WindS 4 km/hCalm
Today’s fly
Damsel Nymph
Damsel Nymph10-12
Retrieve
Conditions on the water
Live gauge
Wind
Calm
S 4 km/h
N
S
from the south
WaveFlat calm
Water temp
Air temp15°C
CloudBroken
Pressure1021 hPa
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

How to fish it · for rainbow
When
No strong hatch signals at the moment — general searching tactics should work best. Calm conditions may limit drift fishing — consider buzzers or dry fly if fish are rising.
Where
With limited drift, anchor or fish static from sheltered positions. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point. In the calm, a single dry fly or a slowly-fished nymph tends to out-fish an active retrieve.
The plan
Plan A

With limited drift, anchor or fish static from sheltered positions. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point. In the calm, a single dry fly or a slowly-fished nymph tends to out-fish an active retrieve.

Plan B

If the main plan is not working, switch to a smaller, more imitative pattern fished slower and deeper. A change of drift angle can also make a difference.

Watch for

Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.

Bank

Flat calm suits bank fishing near features — points, weed beds, and inflows where fish patrol.

Through the year
0–3 scale · July 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
Permits & access
Permit required — see local rules.
  • Walloon fishing permit required, but site-specific restrictions may override general calm-water rules because Lake Eupen is a protected drinking-water reservoir
  • Verify current access and exclusion zones before treating it as fishable.
What's coming
Plan ahead
5-day outlook
Condition match
74%
Cloud100%
Wind65%
Temp60%

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

Fishing better nearby · 5
About this water

Protected drinking-water reservoir near Eupen in the Hertogenwald forest where angling access is highly conditional and may be prohibited or heavily restricted. Treat it as a low-priority, low-density stillwater rather than a dependable trout destination, and verify current rules before planning a trip.

  • Lake
  • Slate
Water quality (WFD)
  • EcologyGood
  • ChemicalUnknown

WFD classification · BERW06_VE04R

Why this score
  • Cloud cover (mixed) suits the fishery well.
Directions
Seasons & zones
  • Trout3rd Saturday of March → 30 September
Related guides
Booking & contacts