Ruisseau· 9 segments
Le Chassezac
Crosses 2 administrative regions : Ardèche, Lozère
Total length
86km
Max discharge
14,4m³/s
Max Strahler
3
Segments matched
9
River geography2 admin regions · 21 communes
2 administrative regions crossed (GADM L2)
21 communes (L5)For countries with L5
- Prévenchères11.20 km
- Chasseradès7.56 km
- Chambonas5.49 km
- Saint-Frézal-d'Albuges4.82 km
- Grospierres3.08 km
- Les Assions2.82 km
- Pied-de-Borne2.53 km
- La Bastide-Puylaurent2.31 km
- Saint-Alban-Auriolles2.06 km
- Belvezet0.92 km
- Les Vans0.46 km
- Ruoms0.45 km
- Chandolas0.44 km
- Sampzon0.23 km
- Sainte-Marguerite-Lafigère0.00 km
- Payzac0.00 km
- Berrias-et-Casteljau0.00 km
- Saint-Pierre-Saint-Jean0.00 km
- Beaulieu0.00 km
- Montbel0.00 km
- Pourcharesses0.00 km
6 intersecting protected areas
Monts D\'Ardèche
IUCN VRegional Nature Park
National Park - Buffer zone/Area of adhesion
Bois de Païolive et Basse Vallée du Chassezac
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Moyenne vallée de l'Ardèche, pelouses du plateau des Gras
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Plateau de Montselgues
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Grads De Naves
IUCN IVRegional Nature Reserve
1 page = 1 named river (aggregation of 9 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
3 658 distinct species · 29 473 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Le Chassezac : 32 espèces + 4 bulles famille, 61 interactions GloBI documentées sur 5 types (connectance 9.7%, filtre Serrano α=0.2). Les 4 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
86km
Max discharge
14,4m³/s
Max Strahler
3
Segments matched
9
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.