HydroBASINS lev08 watershed · #2080585520
Bassin de Canal de la Gentille
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 : Haute-Garonne, Hautes-Pyrénées
Sub-basin area
157,9km²
Upstream area
2 297,6km²
Discharge
36,19m³/s
Mean elev.
441m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Neste d'Aure874 km²
- Bassin de la Garonne38 km²
2 dept-equivalent regions (GADM L2)
- 153.8 km²97.2% of basin
- 4.4 km²2.8% of basin
38 communes (GADM L5)Available for FRA, RWA
- Labarthe-Rivière13.99 km²100% commune
- Saint-Gaudens13.75 km²49% commune
- Les Tourreilles12.38 km²98% commune
- Villeneuve-de-Rivière10.70 km²76% commune
- Cier-de-Rivière8.89 km²99% commune
- Miramont-de-Comminges8.18 km²95% commune
- Ponlat-Taillebourg8.15 km²95% commune
- Valentine8.14 km²100% commune
- Pointis-de-Rivière6.80 km²100% commune
- Bordes-de-Rivière6.68 km²77% commune
- Cuguron6.15 km²94% commune
- Montréjeau5.98 km²73% commune
- Estancarbon5.78 km²92% commune
- Clarac4.42 km²100% commune
- Gourdan-Polignan4.28 km²81% commune
- Ausson4.27 km²100% commune
- Huos3.98 km²100% commune
- Ardiège3.94 km²97% commune
- Martres-de-Rivière3.50 km²100% commune
- Saint-Laurent-de-Neste2.82 km²26% commune
- Pointis-Inard2.69 km²18% commune
- Sauveterre-de-Comminges2.35 km²8% commune
- Seilhan2.20 km²47% commune
- Labarthe-Inard2.04 km²21% commune
- Saint-Paul1.27 km²18% commune
- Franquevielle1.27 km²12% commune
- Landorthe0.68 km²7% commune
- Aspret-Sarrat0.61 km²16% commune
- Le Cuing0.56 km²4% commune
- Labroquère0.45 km²10% commune
- Barbazan0.43 km²7% commune
- Mazères-de-Neste0.28 km²7% commune
- Savarthès0.27 km²9% commune
- Rieucazé0.11 km²6% commune
- Villeneuve-Lécussan0.10 km²1% commune
- Cantaous0.04 km²1% commune
- Tibiran-Jaunac0.02 km²0% commune
- Loudet0.01 km²0% commune
3 intersecting protected areas
Garonne, Ariège, Hers, Salat, Pique et Neste
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.98 km² overlap
Chaînons calcaires du Piémont Commingeois
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.45 km² overlap
Biotope Protection Order
1.48 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 599 distinct species · 35 888 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 Canal de la Gentille : 40 espèces + 3 bulles famille, 98 interactions GloBI documentées sur 5 types (connectance 10.9%, filtre Serrano α=0.2). Les 3 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°
11,5°C
Annual rain
820mm
Moisture idx (CMI)
-0,13
Runoff
380mm/an
PET
942mm
AET
685mm
Mean slope
4,0°
Water table
246cm
Forest
34%
Crops
14%
Urban
10%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)