HydroBASINS lev08 watershed · #2080555510
Bassin du Chapeauroux
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 : Haute-Loire, Lozère
Sub-basin area
383,9km²
Upstream area
383,9km²
Discharge
5,69m³/s
Mean elev.
1 210m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 375.8 km²97.7% of basin
- 9.0 km²2.3% of basin
25 communes (GADM L5)Available for FRA, RWA
- Grandrieu61.65 km²97% commune
- Arzenc-de-Randon54.88 km²79% commune
- La Panouse32.57 km²85% commune
- Chaudeyrac31.61 km²72% commune
- Saint-Jean-la-Fouillouse29.55 km²100% commune
- Châteauneuf-de-Randon24.63 km²100% commune
- Auroux23.88 km²68% commune
- Saint-Sauveur-de-Ginestoux21.08 km²100% commune
- Pierrefiche16.26 km²100% commune
- Saint-Bonnet-de-Montauroux16.04 km²75% commune
- Montbel15.33 km²65% commune
- Laval-Atger10.83 km²100% commune
- Saint-Christophe-d'Allier8.95 km²47% commune
- Chastanier7.76 km²75% commune
- Saint-Symphorien6.42 km²19% commune
- Rocles5.97 km²30% commune
- Laubert5.30 km²37% commune
- Allenc5.17 km²13% commune
- Saint-Paul-le-Froid2.58 km²6% commune
- Estables1.86 km²6% commune
- Belvezet1.77 km²14% commune
- La Villedieu0.61 km²3% commune
- Pelouse0.02 km²0% commune
- Saint-Vénérand0.02 km²0% commune
- Saint-Haon0.01 km²0% commune
3 intersecting protected areas
Haut Val d'Allier
IUCN Not ReportedSpecial Protection Area (Birds Directive)
37.96 km² overlap
Plateau de Charpal
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.50 km² overlap
Gorges de l'Allier et affluents
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.47 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 099 distinct species · 47 307 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Chapeauroux : 22 espèces reliées par 139 interactions GloBI sur 6 types (connectance 20.9%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
6,8°C
Annual rain
848mm
Moisture idx (CMI)
0,11
Runoff
478mm/an
PET
755mm
AET
633mm
Mean slope
6,1°
Water table
396cm
Forest
78%
Crops
3%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)