HydroBASINS lev08 watershed · #2080578760
Bassin de l'Ariège
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 : Haute-Garonne
Sub-basin area
31,7km²
Upstream area
4 043,5km²
Discharge
38,06m³/s
Mean elev.
185m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de l'Ariège392 km²
- Bassin de la Lèze374 km²
1 dept-equivalent regions (GADM L2)
- 31.8 km²100.0% of basin
12 communes (GADM L5)Available for FRA, RWA
- Clermont-le-Fort8.02 km²74% commune
- Labarthe-sur-Lèze7.58 km²76% commune
- Goyrans4.15 km²71% commune
- Pins-Justaret3.95 km²88% commune
- Pinsaguel2.45 km²47% commune
- Eaunes2.06 km²14% commune
- Villate1.34 km²71% commune
- Lacroix-Falgarde1.06 km²17% commune
- Roquettes0.61 km²19% commune
- Lagardelle-sur-Lèze0.42 km²3% commune
- Venerque0.07 km²0% commune
- Vernet0.04 km²0% commune
5 intersecting protected areas
Confluence Garonne-Ariège
IUCN IVRegional Nature Reserve
1.83 km² overlap
Garonne, Ariège, Hers, Salat, Pique et Neste
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.72 km² overlap
Vallée de la Garonne de Muret à Moissac
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.53 km² overlap
Biotope Protection Order
0.51 km² overlap
les roches
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 682 distinct species · 42 056 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 44 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'Ariège : 39 espèces + 5 bulles famille, 99 interactions GloBI documentées sur 5 types (connectance 10.5%, filtre Serrano α=0.2). Les 5 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°
12,7°C
Annual rain
708mm
Moisture idx (CMI)
-0,27
Runoff
243mm/an
PET
974mm
AET
600mm
Mean slope
2,2°
Water table
157cm
Forest
0%
Crops
87%
Urban
31%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)