HydroBASINS lev08 watershed · #2080589040
Bassin de Vicdessos
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
355,5km²
Upstream area
355,5km²
Discharge
3,65m³/s
Mean elev.
1 695m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 355.3 km²99.8% of basin
- 0.8 km²0.2% of basin
26 communes (GADM L5)Available for FRA, RWA
- Auzat159.68 km²96% commune
- Siguer37.99 km²96% commune
- Suc-et-Sentenac30.03 km²96% commune
- Gestiès26.46 km²96% commune
- Lercoul19.94 km²98% commune
- Miglos18.66 km²99% commune
- Goulier10.02 km²100% commune
- Orus8.52 km²97% commune
- Lapège8.37 km²98% commune
- Vicdessos6.17 km²100% commune
- Sem5.43 km²100% commune
- Illier-et-Laramade5.16 km²100% commune
- Génat4.11 km²51% commune
- Niaux3.36 km²85% commune
- Alliat3.30 km²100% commune
- Capoulet-et-Junac2.77 km²100% commune
- Aston1.40 km²1% commune
- Tarascon-sur-Ariège1.18 km²13% commune
- Quié0.76 km²34% commune
- Larcat0.67 km²7% commune
- Aulus-les-Bains0.51 km²1% commune
- Gourbit0.46 km²3% commune
- Le Port0.12 km²0% commune
- Rabat-les-Trois-Seigneurs0.11 km²0% commune
- Larnat0.08 km²2% commune
- Ussat0.01 km²0% commune
15 intersecting protected areas
Pyrénées Ariégeoises
IUCN VRegional Nature Park
351.14 km² overlap
Mont Ceint, mont Béas, tourbière de Bernadouze
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.15 km² overlap
Montcalm (Du)
IUCN IaForest Integral Biological Reserve
3.84 km² overlap
Montcalm (Du)
IUCN IVForest Managed Biological Reserve
1.77 km² overlap
Special Areas of Conservation (Habitats Directive)
1.47 km² overlap
Special Protection Area (Birds Directive)
1.47 km² overlap
Alt Pallars
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.04 km² overlap
Alt Pallars
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.04 km² overlap
Alt Pirineu
IUCN VNatural Park
1.02 km² overlap
6 more protected areassorted by overlap area
Alt Pirineu
IUCN VProtection Plan
1.02 km² overlap
Vallée de l'Aston
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.93 km² overlap
Parc natural Comunal de les Valls del Comapedrosa
IUCN Not ReportedEmerald Network
0.11 km² overlap
Municipal Natural Park
0.08 km² overlap
Wetland of International Importance (Ramsar Site)
0.08 km² overlap
Grotte De La Petite Caougno
IUCN IVBiotope Protection Order
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 000 distinct species · 49 947 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 Vicdessos : 25 espèces + 4 bulles famille, 56 interactions GloBI documentées sur 4 types (connectance 13.8%, 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°
5,6°C
Annual rain
1 169mm
Moisture idx (CMI)
0,39
Runoff
334mm/an
PET
680mm
AET
632mm
Mean slope
26,4°
Water table
1 003cm
Forest
67%
Crops
3%
Urban
0%
Protected
99%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)