HydroBASINS lev08 watershed · #2080596340
Bassin de Valira d'Orient
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 across 2 countries : Ariège, Lleida
Sub-basin area
542,3km²
Upstream area
542,3km²
Discharge
5,02m³/s
Mean elev.
1 935m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 107.9 km²19.9% of basin
- 9.6 km²1.8% of basin
7 communes (GADM L5)Available for FRA, RWA
20 intersecting protected areas
Alt Pirineu
IUCN VProtection Plan
48.10 km² overlap
Alt Pirineu
IUCN VNatural Park
48.10 km² overlap
Vall de Madriu-Perafita-Claror
IUCN Not ReportedWetland of International Importance (Ramsar Site)
40.09 km² overlap
Alt Pallars
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
37.61 km² overlap
Alt Pallars
IUCN Not ReportedSpecial Protection Area (Birds Directive)
37.61 km² overlap
Vedat de caça de Ransol
IUCN IVHunting Reserve
26.73 km² overlap
Vedat de caça d'Enclar
IUCN IVHunting Reserve
24.22 km² overlap
Wetland of International Importance (Ramsar Site)
14.87 km² overlap
Municipal Natural Park
14.87 km² overlap
11 more protected areassorted by overlap area
Parc natural Comunal de les Valls del Comapedrosa
IUCN Not ReportedEmerald Network
14.69 km² overlap
Wetland of International Importance (Ramsar Site)
10.67 km² overlap
Parc natural de la Vall de Sorteny
IUCN Not ReportedEmerald Network
10.67 km² overlap
Municipal Natural Park
10.65 km² overlap
Hunting Reserve
10.64 km² overlap
Vedat de caça de Xixerella
IUCN IVHunting Reserve
6.61 km² overlap
Pyrénées Ariégeoises
IUCN VRegional Nature Park
1.90 km² overlap
Tossa Plana de Lles-Puigpedrós
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.22 km² overlap
Tossa Plana de Lles-Puigpedrós
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.22 km² overlap
Protection Plan
1.11 km² overlap
Vallée de l'Aston
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.41 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 258 distinct species · 200 886 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Valira d'Orient : 23 espèces + 6 bulles famille, 57 interactions GloBI documentées sur 4 types (connectance 14.0%, filtre Serrano α=0.2). Les 6 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°
4,5°C
Annual rain
1 225mm
Moisture idx (CMI)
0,46
Runoff
301mm/an
PET
636mm
AET
605mm
Mean slope
23,3°
Water table
831cm
Forest
75%
Crops
2%
Urban
7%
Protected
13%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)