HydroBASINS lev08 watershed · #2080423710

Bassin de la Lesse

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 2 administrative regions : Luxembourg, Namur

Pfafstetter: 23250892

Sub-basin area

1 331,7km²

Upstream area

1 331,7km²

Discharge

15,77m³/s

Mean elev.

330m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin du Bocq633 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

Luxembourg
Wallonie · Belgium
776.1 km²
58.1% of basin
Namur
Wallonie · Belgium
560.2 km²
41.9% of basin

30 intersecting protected areas

Haute-Wamme et Masblette
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
71.79 km² overlap
Haute-Wamme et Masblette
IUCN Not Reported
Special Protection Area (Birds Directive)
71.79 km² overlap
Massif forestier de Daverdisse
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
45.06 km² overlap
Massif forestier de Daverdisse
IUCN Not Reported
Special Protection Area (Birds Directive)
45.06 km² overlap
Bassin de la Lomme de Poix-Saint-Hubert à Grupont
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
36.13 km² overlap
Bassin de la Lomme de Poix-Saint-Hubert à Grupont
IUCN Not Reported
Special Protection Area (Birds Directive)
36.13 km² overlap
Haute-Wimbe
IUCN Not Reported
Special Protection Area (Birds Directive)
30.84 km² overlap
Haute-Wimbe
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
30.84 km² overlap
Bassin de la Lesse entre Villers-sur-Lesse et Chanly
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
25.82 km² overlap

21 more protected areassorted by overlap area

Bassin de la Lesse entre Villers-sur-Lesse et Chanly
IUCN Not Reported
Special Protection Area (Birds Directive)
25.82 km² overlap
La Famenne entre Eprave et Havrenne
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
25.19 km² overlap
La Famenne entre Eprave et Havrenne
IUCN Not Reported
Special Protection Area (Birds Directive)
25.19 km² overlap
Vallées des Ruisseaux de Fenffe et du Vachau
IUCN Not Reported
Special Protection Area (Birds Directive)
22.61 km² overlap
Vallées des Ruisseaux de Fenffe et du Vachau
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
22.61 km² overlap
Vallée de la Wimbe
IUCN Not Reported
Special Protection Area (Birds Directive)
22.17 km² overlap
Vallée de la Wimbe
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
22.17 km² overlap
Haute-Lomme
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
20.55 km² overlap
Haute-Lomme
IUCN Not Reported
Special Protection Area (Birds Directive)
20.55 km² overlap
Vallée de la Lesse en aval de Houyet
IUCN Not Reported
Special Protection Area (Birds Directive)
16.58 km² overlap
Vallée de la Lesse en aval de Houyet
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
16.58 km² overlap
Vallée de l'Almache en amont de Gembes
IUCN Not Reported
Special Protection Area (Birds Directive)
12.14 km² overlap
Vallée de l'Almache en amont de Gembes
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
12.14 km² overlap
Bassin de l'Iwène
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
9.19 km² overlap
Bassin de l'Iwène
IUCN Not Reported
Special Protection Area (Birds Directive)
9.19 km² overlap
Vallée de l'Ilèwe
IUCN Not Reported
Special Protection Area (Birds Directive)
8.46 km² overlap
Vallée de l'Ilèwe
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
8.46 km² overlap
Rouge Poncé (ou Ponceau)
IUCN IV
State Nature Reserve (Walloon Region)
7.09 km² overlap
Vallée de la Lesse entre Villers-sur-Lesse et Houyet
IUCN Not Reported
Special Protection Area (Birds Directive)
5.58 km² overlap
Vallée de la Lesse entre Villers-sur-Lesse et Houyet
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
5.58 km² overlap
Vallée du Biran
IUCN Not Reported
Special Protection Area (Birds Directive)
5.56 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

8 609 distinct species · 242 552 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 33 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.

ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de la Lesse : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 4 bulles famille, 44 interactions GloBI documentées sur 4 types (connectance 8.3%, filtre Serrano α=0.2). Les 4 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées

Interactions affichées

Connectance

0.083

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

8,7°C

Annual rain

998mm

Moisture idx (CMI)

0,27

Runoff

376mm/an

PET

725mm

AET

609mm

Mean slope

4,4°

Water table

283cm

Forest

58%

Crops

Urban

Protected

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)