HydroBASINS lev08 watershed · #2080545480
Bassin du Ceroux
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 : Cantal, Haute-Loire
Sub-basin area
252,1km²
Upstream area
2 248,2km²
Discharge
26,56m³/s
Mean elev.
770m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Desges550 km²
- Bassin de la Cronce158 km²
2 dept-equivalent regions (GADM L2)
- 215.0 km²85.1% of basin
- 37.6 km²14.9% of basin
26 communes (GADM L5)Available for FRA, RWA
- Ally31.26 km²99% commune
- Saint-Just-près-Brioude30.78 km²66% commune
- Mercœur27.29 km²100% commune
- Vieille-Brioude23.90 km²85% commune
- Saint-Privat-du-Dragon16.84 km²77% commune
- La Chapelle-Laurent14.66 km²56% commune
- Villeneuve-d'Allier14.38 km²100% commune
- Blassac12.35 km²100% commune
- Saint-Cirgues12.05 km²89% commune
- Saint-Ilpize11.85 km²100% commune
- Saint-Austremoine10.91 km²91% commune
- Celoux9.02 km²90% commune
- Rageade7.04 km²56% commune
- La Chomette4.40 km²61% commune
- Lubilhac4.22 km²18% commune
- Chazelles4.20 km²66% commune
- Lavoûte-Chilhac3.80 km²100% commune
- Chilhac3.63 km²82% commune
- Lavaudieu3.44 km²20% commune
- Aubazat2.66 km²16% commune
- Lastic1.39 km²13% commune
- Soulages1.19 km²8% commune
- Salzuit0.76 km²10% commune
- Cerzat0.44 km²4% commune
- Saint-Poncy0.15 km²0% commune
- Cronce0.03 km²0% commune
4 intersecting protected areas
Haut Val d'Allier
IUCN Not ReportedSpecial Protection Area (Birds Directive)
100.30 km² overlap
Val d'Allier / Vieille Brioude / Langeac
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
23.52 km² overlap
Livradois-Forez
IUCN VRegional Nature Park
3.53 km² overlap
Val d'Allier Limagne Brivadoise
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.28 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 408 distinct species · 79 032 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Ceroux : 22 espèces + 7 bulles famille, 53 interactions GloBI documentées sur 6 types (connectance 13.1%, filtre Serrano α=0.2). Les 7 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°
9,1°C
Annual rain
701mm
Moisture idx (CMI)
-0,18
Runoff
325mm/an
PET
860mm
AET
590mm
Mean slope
9,1°
Water table
462cm
Forest
57%
Crops
12%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)