HydroBASINS lev08 watershed · #2080586680
Bassin de la Garonne
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
59,5km²
Upstream area
1 092,5km²
Discharge
19,75m³/s
Mean elev.
738m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Garonne677 km²
- Bassin de la Pique356 km²
2 dept-equivalent regions (GADM L2)
- 36.5 km²61.2% of basin
- 23.1 km²38.8% of basin
33 communes (GADM L5)Available for FRA, RWA
- Thèbe7.05 km²95% commune
- Saléchan4.40 km²100% commune
- Chaum4.28 km²75% commune
- Fronsac4.13 km²99% commune
- Antichan-de-Frontignes4.09 km²96% commune
- Luscan3.06 km²94% commune
- Galié2.98 km²99% commune
- Ore2.93 km²100% commune
- Siradan2.80 km²100% commune
- Cazarilh2.76 km²88% commune
- Bagiry2.75 km²100% commune
- Esténos2.61 km²80% commune
- Bertren2.59 km²99% commune
- Frontignan-de-Comminges2.50 km²100% commune
- Saint-Pé-d'Ardet2.48 km²73% commune
- Mont-de-Galié2.32 km²95% commune
- Mauléon-Barousse1.63 km²30% commune
- Lourde1.38 km²100% commune
- Ilheu0.52 km²28% commune
- Samuran0.52 km²19% commune
- Moncaup0.41 km²6% commune
- Sainte-Marie0.30 km²100% commune
- Esbareich0.24 km²3% commune
- Izaourt0.21 km²8% commune
- Cierp-Gaud0.20 km²1% commune
- Génos0.18 km²5% commune
- Sauveterre-de-Comminges0.13 km²0% commune
- Anla0.07 km²2% commune
- Barbazan0.05 km²1% commune
- Cazaunous0.01 km²0% commune
- Troubat0.01 km²0% commune
- Malvezie0.00 km²0% commune
- Bezins-Garraux0.00 km²0% commune
4 intersecting protected areas
Zones rupestres xérothermiques du bassin de Marignac, Saint-Béat, pic du Gar, montagne de Rié
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
12.07 km² overlap
Chaînons calcaires du Piémont Commingeois
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.87 km² overlap
Garonne, Ariège, Hers, Salat, Pique et Neste
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.39 km² overlap
Biotope Protection Order
0.28 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 649 distinct species · 53 274 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 la Garonne : 22 espèces + 3 bulles famille, 34 interactions GloBI documentées sur 5 types (connectance 11.3%, 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°
10,0°C
Annual rain
928mm
Moisture idx (CMI)
0,04
Runoff
414mm/an
PET
884mm
AET
707mm
Mean slope
16,0°
Water table
562cm
Forest
99%
Crops
4%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)