HydroBASINS lev08 watershed · #2080579760
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 3 administrative regions : Ariège, Aude, Haute-Garonne
Sub-basin area
391,5km²
Upstream area
3 637,7km²
Discharge
34,56m³/s
Mean elev.
240m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Grand Hers1390 km²
- Bassin de l'Ariège783 km²
3 dept-equivalent regions (GADM L2)
- 367.9 km²93.8% of basin
- 24.4 km²6.2% of basin
- 0.0 km²0.0% of basin
46 communes (GADM L5)Available for FRA, RWA
- Cintegabelle39.10 km²73% commune
- Gaillac-Toulza37.48 km²91% commune
- Auterive36.92 km²100% commune
- Miremont23.75 km²100% commune
- Saint-Léon21.27 km²88% commune
- Aignes19.94 km²91% commune
- Venerque14.43 km²99% commune
- Auragne13.90 km²100% commune
- Gibel13.67 km²70% commune
- Nailloux12.65 km²66% commune
- Mauvaisin11.03 km²100% commune
- Caujac10.67 km²100% commune
- Calmont10.24 km²25% commune
- Canté8.74 km²86% commune
- Esperce8.73 km²52% commune
- Lagrâce-Dieu8.27 km²97% commune
- Grépiac7.94 km²100% commune
- Grazac7.59 km²100% commune
- Puydaniel7.22 km²100% commune
- Marliac7.11 km²99% commune
- Issus7.02 km²100% commune
- Auribail5.87 km²66% commune
- Noueilles5.45 km²100% commune
- Montbrun-Lauragais4.70 km²40% commune
- Beaumont-sur-Lèze4.63 km²18% commune
- Mauressac4.46 km²100% commune
- Lagardelle-sur-Lèze4.35 km²32% commune
- Pouze4.04 km²100% commune
- Vernet3.85 km²37% commune
- Lissac3.85 km²100% commune
- Saint-Quirc3.72 km²100% commune
- Montgeard3.59 km²40% commune
- Labatut3.14 km²100% commune
- Justiniac2.88 km²67% commune
- Espanès2.15 km²66% commune
- Clermont-le-Fort1.88 km²17% commune
- Labruyère-Dorsa1.80 km²100% commune
- Monestrol1.15 km²21% commune
- Belbèze-de-Lauragais0.91 km²25% commune
- Durfort0.82 km²7% commune
- Saint-Ybars0.68 km²3% commune
- Saverdun0.44 km²1% commune
- Brie0.12 km²2% commune
- Montgiscard0.09 km²1% commune
- Villeneuve-du-Latou0.01 km²0% commune
- Molandier0.00 km²0% commune
5 intersecting protected areas
Biotope Protection Order
1.65 km² overlap
Garonne, Ariège, Hers, Salat, Pique et Neste
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.57 km² overlap
Confluence Garonne-Ariège
IUCN IVRegional Nature Reserve
0.44 km² overlap
graviere de ramarot
IUCN IVLand acquired by a regional conservatory of natural areas
0.10 km² overlap
Piège et collines du Lauragais
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 249 distinct species · 76 309 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'Ariège : 33 espèces + 6 bulles famille, 80 interactions GloBI documentées sur 5 types (connectance 10.8%, 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°
12,6°C
Annual rain
732mm
Moisture idx (CMI)
-0,24
Runoff
263mm/an
PET
965mm
AET
620mm
Mean slope
3,5°
Water table
235cm
Forest
4%
Crops
95%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)