HydroBASINS lev08 watershed · #2080568060
Bassin de la Baye
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 : Aveyron, Tarn, Tarn-et-Garonne
Sub-basin area
81,1km²
Upstream area
3 149,6km²
Discharge
38,93m³/s
Mean elev.
292m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Viaur1541 km²
- Bassin de l'Aveyron1528 km²
3 dept-equivalent regions (GADM L2)
- 49.6 km²61.0% of basin
- 15.9 km²19.6% of basin
- 15.7 km²19.4% of basin
10 communes (GADM L5)Available for FRA, RWA
3 intersecting protected areas
Vallées du Tarn, de l'Aveyron, du Viaur, de l'Agout et du Gijou
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.73 km² overlap
Biotope Protection Order
0.41 km² overlap
Forêt de Grésigne et environs
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.10 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 687 distinct species · 8 535 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Baye : 33 espèces + 4 bulles famille, 91 interactions GloBI documentées sur 4 types (connectance 13.7%, 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°
12,3°C
Annual rain
776mm
Moisture idx (CMI)
-0,21
Runoff
320mm/an
PET
982mm
AET
652mm
Mean slope
6,7°
Water table
348cm
Forest
20%
Crops
3%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)