Rivière· 50 segments
L'Aulne
Crosses 2 administrative regions : Côtes-d'Armor, Finistère
Total length
133km
Max discharge
55,3m³/s
Max Strahler
5
Segments matched
50
River geography2 admin regions · 31 communes
2 administrative regions crossed (GADM L2)
- FinistèreBretagne · France140.1 kmin this dpt
- Côtes-d'ArmorBretagne · France10.1 kmin this dpt
31 communes (L5)For countries with L5
- Châteauneuf-du-Faou16.19 km
- Poullaouen14.59 km
- Gouézec12.58 km
- Spézet12.57 km
- Châteaulin8.62 km
- Lothey7.83 km
- Landeleau7.32 km
- Plonévez-du-Faou7.17 km
- Pleyben6.14 km
- Plouyé6.01 km
- Bolazec5.86 km
- Saint-Goazec5.25 km
- Plourac'h4.93 km
- Saint-Ségal4.48 km
- Laz3.47 km
- Locmaria-Berrien3.29 km
- Saint-Coulitz2.92 km
- Lennon2.87 km
- Cléden-Poher2.78 km
- Port-Launay2.73 km
- Lohuec2.70 km
- Saint-Thois2.63 km
- Carnoët2.44 km
- Kergloff1.98 km
- Edern1.61 km
- Dinéault0.53 km
- Scrignac0.51 km
- Briec0.10 km
- Saint-Hernin0.03 km
- Pont-de-Buis-lès-Quimerch0.02 km
- Plomodiern0.00 km
5 intersecting protected areas
Armorique
IUCN VRegional Nature Park
Rade de Brest : Baie de Daoulas, Anse de Poulmic
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Vallée de l'Aulne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Carrière du Milin ar Stang
IUCN Not ReportedGeotope Protection Order
Biotope Protection Order
1 page = 1 named river (aggregation of 50 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
520 distinct species · 1 835 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
133km
Max discharge
55,3m³/s
Max Strahler
5
Segments matched
50
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.