HydroBASINS lev08 watershed · #2080426170
Bassin de l'Ourthe occidentale
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 1 administrative regions : Luxembourg
Sub-basin area
403km²
Upstream area
403,1km²
Discharge
5,09m³/s
Mean elev.
463m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
1 dept-equivalent regions (GADM L2)
- 404.3 km²100.0% of basin
30 intersecting protected areas
Forêt de Freyr
IUCN Not ReportedSpecial Protection Area (Birds Directive)
27.77 km² overlap
Forêt de Freyr
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
27.77 km² overlap
Bassin supérieur de l'Ourthe occidentale
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
15.23 km² overlap
Bassin supérieur de l'Ourthe occidentale
IUCN Not ReportedSpecial Protection Area (Birds Directive)
15.23 km² overlap
Bassin inférieur de l'Ourthe occidentale
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.22 km² overlap
Bassin inférieur de l'Ourthe occidentale
IUCN Not ReportedSpecial Protection Area (Birds Directive)
8.22 km² overlap
Bassin moyen de l'Ourthe occidentale
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.37 km² overlap
Bassin moyen de l'Ourthe occidentale
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.37 km² overlap
Etangs de Longchamps et de Noville
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.43 km² overlap
21 more protected areassorted by overlap area
Etangs de Longchamps et de Noville
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.43 km² overlap
Vallée de la Haute-Sûre
IUCN Not ReportedWetland of International Importance (Ramsar Site)
1.12 km² overlap
Haute-Wamme et Masblette
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.84 km² overlap
Haute-Wamme et Masblette
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.84 km² overlap
State Nature Reserve (Walloon Region)
0.69 km² overlap
State Nature Reserve (Walloon Region)
0.46 km² overlap
Orti
IUCN IVState Nature Reserve (Walloon Region)
0.31 km² overlap
Rouge Poncé (ou Ponceau)
IUCN IVState Nature Reserve (Walloon Region)
0.16 km² overlap
Plateau de Saint-Hubert
IUCN IVScientific Interest Site (Walloon Region)
0.15 km² overlap
Magery
IUCN IVState Nature Reserve (Walloon Region)
0.06 km² overlap
State Nature Reserve (Walloon Region)
0.06 km² overlap
Wideumont
IUCN IVState Nature Reserve (Walloon Region)
0.05 km² overlap
Orti
IUCN IVScientific Interest Site (Walloon Region)
0.04 km² overlap
Amberloup
IUCN IVState Nature Reserve (Walloon Region)
0.04 km² overlap
State Nature Reserve (Walloon Region)
0.04 km² overlap
Ruisseau de Cens
IUCN IVState Nature Reserve (Walloon Region)
0.04 km² overlap
Lavaselle
IUCN IVCertified Nature Reserve (Walloon Region)
0.02 km² overlap
Moircy
IUCN IVState Nature Reserve (Walloon Region)
0.02 km² overlap
Haute-Sûre
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.02 km² overlap
Haute-Sûre
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.02 km² overlap
Vallée de l'Ourthe entre Nisramont et La Roche
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 985 distinct species · 58 891 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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de l'Ourthe occidentale : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 110 interactions GloBI sur 5 types (connectance 17.5%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
7,9°C
Annual rain
1 055mm
Moisture idx (CMI)
0,35
Runoff
398mm/an
PET
689mm
AET
601mm
Mean slope
4,0°
Water table
261cm
Forest
37%
Crops
16%
Urban
0%
Protected
77%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)