HydroBASINS lev08 watershed · #2080569490
Bassin de la Vère
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 : Tarn, Tarn-et-Garonne
Sub-basin area
325km²
Upstream area
325km²
Discharge
3,05m³/s
Mean elev.
268m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 313.0 km²96.1% of basin
- 12.7 km²3.9% of basin
40 communes (GADM L5)Available for FRA, RWA
- Castelnau-de-Montmiral78.02 km²87% commune
- Puycelci29.66 km²75% commune
- Cahuzac-sur-Vère26.42 km²85% commune
- Larroque17.29 km²96% commune
- Villeneuve-sur-Vère14.04 km²87% commune
- Bruniquel12.63 km²38% commune
- Mailhoc12.00 km²94% commune
- Noailles11.48 km²100% commune
- Itzac10.69 km²98% commune
- Saint-Beauzile9.55 km²100% commune
- Le Verdier9.31 km²100% commune
- Sainte-Cécile-du-Cayrou8.14 km²100% commune
- Campagnac7.50 km²100% commune
- Vaour7.27 km²49% commune
- Vieux7.15 km²100% commune
- Cestayrols6.73 km²39% commune
- Alos6.53 km²100% commune
- Tonnac5.69 km²50% commune
- Andillac5.16 km²100% commune
- Virac4.54 km²39% commune
- Penne4.45 km²7% commune
- Milhavet4.40 km²100% commune
- Donnazac4.30 km²99% commune
- Taïx4.22 km²91% commune
- Cagnac-les-Mines3.54 km²14% commune
- Frausseilles2.69 km²43% commune
- Souel2.67 km²28% commune
- Loubers2.49 km²59% commune
- Labastide-Gabausse2.19 km²17% commune
- Montels1.60 km²57% commune
- Lisle-sur-Tarn0.93 km²1% commune
- Roussayrolles0.65 km²13% commune
- Salvagnac0.38 km²1% commune
- Livers-Cazelles0.35 km²3% commune
- Broze0.32 km²8% commune
- Le Garric0.29 km²1% commune
- Fayssac0.22 km²3% commune
- Senouillac0.09 km²1% commune
- Puygaillard-de-Quercy0.04 km²0% commune
- Amarens0.02 km²0% commune
8 intersecting protected areas
Forêt de Grésigne et environs
IUCN Not ReportedSpecial Protection Area (Birds Directive)
118.22 km² overlap
Forêt de la Grésigne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
35.94 km² overlap
Gorges de l'Aveyron, causses proches et vallée de la Vère
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
29.47 km² overlap
Montoulieu
IUCN IVForest Managed Biological Reserve
0.44 km² overlap
Parois De Bruniquel
IUCN IVBiotope Protection Order
0.04 km² overlap
Vallées du Tarn, de l'Aveyron, du Viaur, de l'Agout et du Gijou
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.03 km² overlap
Biotope Protection Order
0.03 km² overlap
grotte de la pierre plantee
IUCN IVLand acquired by a regional conservatory of natural areas
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 471 distinct species · 105 005 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Vère : 34 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 4 bulles famille, 65 interactions GloBI documentées sur 3 types (connectance 9.2%, 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°
12,4°C
Annual rain
769mm
Moisture idx (CMI)
-0,22
Runoff
298mm/an
PET
980mm
AET
647mm
Mean slope
5,5°
Water table
293cm
Forest
32%
Crops
48%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)