HydroBASINS lev08 watershed · #2080552720
Bassin de l'Ander
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
323,1km²
Upstream area
323,1km²
Discharge
5,27m³/s
Mean elev.
981m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
1 dept-equivalent regions (GADM L2)
- 323.8 km²100.0% of basin
28 communes (GADM L5)Available for FRA, RWA
- Valuéjols37.62 km²99% commune
- Saint-Georges31.50 km²94% commune
- Saint-Flour27.12 km²100% commune
- Talizat24.63 km²65% commune
- Roffiac21.71 km²100% commune
- Andelat21.42 km²100% commune
- Paulhac19.47 km²42% commune
- Coltines18.75 km²96% commune
- Vabres16.94 km²91% commune
- Coren16.82 km²99% commune
- Mentières12.83 km²97% commune
- Villedieu12.37 km²64% commune
- Ussel10.44 km²100% commune
- Tanavelle10.19 km²77% commune
- Tiviers9.30 km²70% commune
- Celles8.85 km²49% commune
- Anglards-de-Saint-Flour5.53 km²47% commune
- Laveissenet5.11 km²46% commune
- Montchamp3.71 km²23% commune
- Alleuze3.55 km²14% commune
- Rézentières2.62 km²20% commune
- La Chapelle-d'Alagnon1.00 km²11% commune
- Védrines-Saint-Loup0.84 km²3% commune
- Neussargues-Moissac0.57 km²4% commune
- Les Ternes0.38 km²2% commune
- Ruynes-en-Margeride0.28 km²1% commune
- Cussac0.20 km²1% commune
- Vieillespesse0.08 km²0% commune
8 intersecting protected areas
Planèze de Saint Flour
IUCN Not ReportedSpecial Protection Area (Birds Directive)
169.34 km² overlap
Volcans D\'Auvergne
IUCN VRegional Nature Park
63.49 km² overlap
Zones humides de la Planèze de Saint-Flour
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.87 km² overlap
Affluents rive droite de la Truyère amont
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.53 km² overlap
Gorges de la Truyère
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.83 km² overlap
Massif cantalien
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.68 km² overlap
Sommets du nord Margeride
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.07 km² overlap
marais du moulin de luc
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 507 distinct species · 131 994 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 l'Ander : 20 espèces + 6 bulles famille, 64 interactions GloBI documentées sur 4 types (connectance 19.7%, filtre Serrano α=0.2). Les 6 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°
8,1°C
Annual rain
797mm
Moisture idx (CMI)
-0,03
Runoff
501mm/an
PET
822mm
AET
644mm
Mean slope
4,6°
Water table
319cm
Forest
9%
Crops
10%
Urban
3%
Protected
20%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)