Rivière· 6 segments
L'Authion
Crosses 2 administrative regions : Indre-et-Loire, Maine-et-Loire
Total length
64km
Max discharge
8,2m³/s
Max Strahler
4
Segments matched
6
River geography2 admin regions · 25 communes
2 administrative regions crossed (GADM L2)
- Maine-et-LoirePays de la Loire · France54.3 kmin this dpt
- Indre-et-LoireCentre-Val de Loire · France0.0 kmin this dpt
25 communes (L5)For countries with L5
- Longué-Jumelles7.55 km
- Mazé5.50 km
- Saint-Martin-de-la-Place5.38 km
- Saumur5.31 km
- La Daguenière4.74 km
- Beaufort-en-Vallée4.58 km
- Allonnes3.85 km
- Brain-sur-Allonnes3.26 km
- Brain-sur-l'Authion2.63 km
- Les Ponts-de-Cé2.51 km
- Vivy2.42 km
- Varennes-sur-Loire2.22 km
- La Ménitré1.94 km
- Les Rosiers-sur-Loire1.42 km
- Corné0.34 km
- Villebernier0.31 km
- La Bohalle0.31 km
- Chouzé-sur-Loire0.00 km
- Juigné-sur-Loire0.00 km
- Andard0.00 km
- Trélazé0.00 km
- Saint-Clément-des-Levées0.00 km
- Brion0.00 km
- Saint-Nicolas-de-Bourgueil0.00 km
- Saint-Mathurin-sur-Loire0.00 km
3 intersecting protected areas
Loire-Anjou-Touraine
IUCN VRegional Nature Park
Vallée de la Loire des Ponts-de-Cé à Montsoreau
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Vallée de la Loire des Ponts-de-Cé à Montsoreau
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1 page = 1 named river (aggregation of 6 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
266 distinct species · 2 006 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Graphe en cours d’indexation
Calcul du tissu écologique de cette entité.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 2s).
Hydrology (HydroRIVERS v10)
Total length
64km
Max discharge
8,2m³/s
Max Strahler
4
Segments matched
6
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.