HydroBASINS lev08 watershed · #2080544390
Bassin de la Sumène
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 1 administrative regions : Cantal
Sub-basin area
433,2km²
Upstream area
433,3km²
Discharge
11,85m³/s
Mean elev.
816m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
1 dept-equivalent regions (GADM L2)
- 434.2 km²100.0% of basin
34 communes (GADM L5)Available for FRA, RWA
- Trizac45.06 km²100% commune
- Le Falgoux28.32 km²94% commune
- Menet26.50 km²100% commune
- Le Monteil23.40 km²100% commune
- Méallet22.14 km²100% commune
- Anglards-de-Salers20.42 km²43% commune
- Collandres20.30 km²47% commune
- Auzers20.27 km²100% commune
- Moussages19.31 km²100% commune
- Saint-Vincent-de-Salers19.12 km²100% commune
- Le Vaulmier17.93 km²100% commune
- Ydes17.44 km²97% commune
- Jaleyrac16.21 km²95% commune
- Valette15.26 km²100% commune
- Sauvat14.52 km²100% commune
- Saint-Étienne-de-Chomeil13.83 km²50% commune
- Riom-ès-Montagnes13.43 km²29% commune
- Vebret12.37 km²50% commune
- Bassignac11.93 km²100% commune
- Antignac8.97 km²57% commune
- La Monselie8.96 km²100% commune
- Champagnac7.65 km²27% commune
- Saignes6.74 km²100% commune
- Le Vigean6.61 km²23% commune
- Veyrières6.41 km²47% commune
- Sourniac4.20 km²35% commune
- Arches3.86 km²22% commune
- Saint-Paul-de-Salers1.48 km²4% commune
- Madic0.43 km²7% commune
- Le Claux0.39 km²1% commune
- Le Fau0.38 km²2% commune
- Saint-Bonnet-de-Salers0.18 km²1% commune
- Saint-Projet-de-Salers0.11 km²0% commune
- Mandailles-Saint-Julien0.01 km²0% commune
11 intersecting protected areas
Volcans D\'Auvergne
IUCN VRegional Nature Park
236.85 km² overlap
Gorges de la Dordogne
IUCN Not ReportedSpecial Protection Area (Birds Directive)
15.26 km² overlap
Monts et Plomb du Cantal
IUCN Not ReportedSpecial Protection Area (Birds Directive)
15.21 km² overlap
Entre Sumène et Mars
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.27 km² overlap
Gorges de la Dordogne, de l'Auze et de la Sumène
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.34 km² overlap
Massif cantalien
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.91 km² overlap
Zones humides de la région de Riom-es-Montagne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.56 km² overlap
plateau de chastel marlhac
IUCN IVLand acquired by a regional conservatory of natural areas
0.41 km² overlap
Environs de Meallet
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.15 km² overlap
2 more protected areassorted by overlap area
Land acquired by a regional conservatory of natural areas
0.07 km² overlap
bois de condamine
IUCN IVLand acquired by a regional conservatory of natural areas
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 954 distinct species · 158 552 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Sumène : 30 espèces + 2 bulles famille, 61 interactions GloBI documentées sur 4 types (connectance 12.3%, filtre Serrano α=0.2). Les 2 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°
8,8°C
Annual rain
847mm
Moisture idx (CMI)
-0,01
Runoff
747mm/an
PET
851mm
AET
664mm
Mean slope
9,4°
Water table
477cm
Forest
25%
Crops
4%
Urban
0%
Protected
55%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)