HydroBASINS lev08 watershed · #2080576140
Bassin du Gijou
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 : Aveyron, Tarn
Sub-basin area
214,3km²
Upstream area
214,3km²
Discharge
3,37m³/s
Mean elev.
705m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 213.7 km²99.5% of basin
- 1.0 km²0.5% of basin
17 communes (GADM L5)Available for FRA, RWA
- Lacaune41.87 km²46% commune
- Viane38.79 km²100% commune
- Lacaze36.66 km²79% commune
- Gijounet14.54 km²100% commune
- Vabre13.95 km²49% commune
- Castelnau-de-Brassac13.68 km²19% commune
- Saint-Pierre-de-Trivisy12.71 km²35% commune
- Espérausses11.95 km²99% commune
- Berlats10.60 km²100% commune
- Escroux10.15 km²100% commune
- Senaux4.88 km²100% commune
- Ferrières1.96 km²16% commune
- Le Masnau-Massuguiès1.20 km²3% commune
- Saint-Salvi-de-Carcavès0.73 km²7% commune
- Saint-Sever-du-Moustier0.63 km²2% commune
- Laval-Roquecezière0.40 km²1% commune
- Le Margnès0.03 km²0% commune
7 intersecting protected areas
Haut-Languedoc
IUCN VRegional Nature Park
213.73 km² overlap
Vallées du Tarn, de l'Aveyron, du Viaur, de l'Agout et du Gijou
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
26.95 km² overlap
Grands Causses
IUCN VRegional Nature Park
1.00 km² overlap
Tourbières du Margnès
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.58 km² overlap
bois de sahuzet
IUCN IVLand acquired by a regional conservatory of natural areas
0.05 km² overlap
Tourbière De Piquotalen
IUCN IVForest Managed Biological Reserve
0.02 km² overlap
sagne de moulin haut
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 796 distinct species · 46 291 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 du Gijou : 32 espèces + 5 bulles famille, 75 interactions GloBI documentées sur 4 types (connectance 11.3%, filtre Serrano α=0.2). Les 5 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°
10,9°C
Annual rain
833mm
Moisture idx (CMI)
-0,09
Runoff
496mm/an
PET
915mm
AET
668mm
Mean slope
11,8°
Water table
512cm
Forest
90%
Crops
2%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)