Freestone · Limestone · Wallonia / Namur Province

Lesse

Lesse venue image
Google Places

Ardennes river famous for the caves at Han-sur-Lesse where the river disappears underground.

Species

A side-water session, not the main event

River steady at a fishable height. A patient day. Fish the cover and stay with it.

75% confidence in this read
Water temperature for brown trout
Cool — slow
6°C est.ideal 10–16°C
0°14°28°
Why this score · for brown trout
  • Temperature4128% weight
  • Flow8022% weight
  • Clarity9518% weight
  • Feeding Time5013% weight
  • Pressure807% weight
  • Prey Activity2912% weight
Conditions
Level
1.06 m
Water temp
6.4°C
Estimated
Clarity
Clear
Air temp
5°C
Wind
S 14 km/h
Gentle breeze
Pressure
1014 hPa
Rain · 48h
0.0 mm
No meaningful rain
Rain · ahead
9.3 mm
Light rain · next 48h

Live readings — water temperature is an estimate where the gauge does not record it.

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
Good conditions. Clarity is favourable (95), Prey activity is weakest (29).
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Grayling seasonSeason
2
1
1
2
2
2
2
2
2
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
1

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

Gallery · 1
  1. Terrain map of the venue
    Terrain map
Permits & access
Permit required — see local rules.
  • Permis de pêche (Wallonia) / Visverlof (Flanders)
  • Foreign anglers can purchase a Walloon fishing permit (permis de pêche) online or at post offices without residency requirements
  • For Flemish waters, the visverlof is similarly available
  • No prior fishing exam required in either region.
Directions
Apple MapsGoogle Maps
About this water

Ardennes river famous for the caves at Han-sur-Lesse where the river disappears underground. Brown trout and grayling in limestone-rich water with good hatches. Some sections experience kayak traffic in summer—fish early or late. Club permits required.

  • Limestone
Seasons & zones
  • Trout3rd Saturday of March → 30 September
  • Grayling1 June → 28 February
Other water nearby · 3
Booking & contacts