Rivière· 19 segments
L'Alagnon
Crosses 3 administrative regions : Cantal, Haute-Loire, Puy-de-Dôme
Total length
91km
Max discharge
16,5m³/s
Max Strahler
4
Segments matched
19
River geography3 admin regions · 34 communes
3 administrative regions crossed (GADM L2)
- CantalAuvergne-Rhône-Alpes · France52.9 kmin this dpt
- Haute-LoireAuvergne-Rhône-Alpes · France12.3 kmin this dpt
- Puy-de-DômeAuvergne-Rhône-Alpes · France6.2 kmin this dpt
34 communes (L5)For countries with L5
- Laveissière9.22 km
- Albepierre-Bredons9.18 km
- Molompize8.33 km
- Blesle6.28 km
- Peyrusse4.91 km
- Massiac4.40 km
- La Chapelle-d'Alagnon4.24 km
- Neussargues-Moissac3.80 km
- Beaulieu3.60 km
- Léotoing2.95 km
- Murat2.37 km
- Charmensac2.21 km
- Charbonnier-les-Mines1.88 km
- Celles1.84 km
- Grenier-Montgon1.59 km
- Torsiac1.50 km
- Ferrières-Saint-Mary1.44 km
- Virargues0.93 km
- Auzat-la-Combelle0.49 km
- Moriat0.19 km
- Orsonnette0.06 km
- Saint-Gervazy0.00 km
- Joursac0.00 km
- Bonnac0.00 km
- Chalinargues0.00 km
- Laveissenet0.00 km
- Talizat0.00 km
- Valuéjols0.00 km
- Sainte-Florine0.00 km
- Chambezon0.00 km
- Espalem0.00 km
- Apchat0.00 km
- Brassac-les-Mines0.00 km
- Valjouze0.00 km
12 intersecting protected areas
Volcans D\'Auvergne
IUCN VRegional Nature Park
Pays des Couzes
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Planèze de Saint Flour
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Monts et Plomb du Cantal
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Massif cantalien
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Vallées et Gîtes de la Sianne et du Bas Alagnon
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Val d'Allier - Alagnon
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Zones humides de la Planèze de Saint-Flour
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Vallées de l'Allanche et du Haut Alagnon
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3 more protected areassorted by area
Lacs d'Espalem et de Lorlanges
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Land acquired by a regional conservatory of natural areas
Land acquired by a regional conservatory of natural areas
1 page = 1 named river (aggregation of 19 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
4 200 distinct species · 95 650 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 L'Alagnon : 23 espèces + 5 bulles famille, 44 interactions GloBI documentées sur 7 types (connectance 11.6%, 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).
Hydrology (HydroRIVERS v10)
Total length
91km
Max discharge
16,5m³/s
Max Strahler
4
Segments matched
19
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.