HydroBASINS lev08 watershed · #2080419880
Bassin de l'Ourthe
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
Sub-basin area
524,8km²
Upstream area
1 259,3km²
Discharge
15,28m³/s
Mean elev.
289m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
2 dept-equivalent regions (GADM L2)
- 381.0 km²72.3% of basin
- 145.7 km²27.7% of basin
30 intersecting protected areas
Camp militaire de Marche-en-Famenne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
28.67 km² overlap
Camp militaire de Marche-en-Famenne
IUCN Not ReportedSpecial Protection Area (Birds Directive)
28.67 km² overlap
Vallée de l'Ourthe entre Nisramont et La Roche
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
19.79 km² overlap
Vallée de l'Ourthe entre Nisramont et La Roche
IUCN Not ReportedSpecial Protection Area (Birds Directive)
19.79 km² overlap
Massifs forestiers famenniens entre Hotton et Barvaux-sur-Ourthe
IUCN Not ReportedSpecial Protection Area (Birds Directive)
17.55 km² overlap
Massifs forestiers famenniens entre Hotton et Barvaux-sur-Ourthe
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
17.55 km² overlap
Vallée de l'Ourthe entre Hotton et Barvaux-sur-Ourthe
IUCN Not ReportedSpecial Protection Area (Birds Directive)
15.27 km² overlap
Vallée de l'Ourthe entre Hotton et Barvaux-sur-Ourthe
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
15.27 km² overlap
Vallée de l'Ourthe entre La Roche et Hotton
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.04 km² overlap
21 more protected areassorted by overlap area
Vallée de l'Ourthe entre La Roche et Hotton
IUCN Not ReportedSpecial Protection Area (Birds Directive)
6.04 km² overlap
Bois de Famenne à Waillet
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.59 km² overlap
Bois de Famenne à Waillet
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.59 km² overlap
La Calestienne entre Barvaux et Bomal
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.46 km² overlap
La Calestienne entre Barvaux et Bomal
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.46 km² overlap
La Calestienne entre Marenne et Hotton
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.94 km² overlap
La Calestienne entre Marenne et Hotton
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.94 km² overlap
La Calestienne entre Oppagne et Barvaux
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.59 km² overlap
La Calestienne entre Oppagne et Barvaux
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.59 km² overlap
Bois calcaires de Nettinne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.11 km² overlap
Bois calcaires de Nettinne
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.11 km² overlap
Plaine de Ny
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.55 km² overlap
Haute-Wamme et Masblette
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.43 km² overlap
Haute-Wamme et Masblette
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.43 km² overlap
La Calestienne entre Hotton et Oppagne
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.09 km² overlap
La Calestienne entre Hotton et Oppagne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.09 km² overlap
Fagnes de Samrée et de Tailles
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.67 km² overlap
Fagnes de Samrée et de Tailles
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.67 km² overlap
Enneilles
IUCN IVCertified Nature Reserve (Walloon Region)
0.55 km² overlap
Mont des Pins
IUCN IVCertified Nature Reserve (Walloon Region)
0.51 km² overlap
La Calestienne à Marche en Famenne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.39 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 527 distinct species · 92 767 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 : 35 espèces + 4 bulles famille, 91 interactions GloBI documentées sur 4 types (connectance 12.3%, filtre Serrano α=0.2). Les 4 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
8,8°C
Annual rain
943mm
Moisture idx (CMI)
0,24
Runoff
371mm/an
PET
717mm
AET
599mm
Mean slope
4,8°
Water table
282cm
Forest
49%
Crops
12%
Urban
3%
Protected
24%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)