Ruisseau· 23 segments
Le Léguer
Crosses 1 administrative regions : Côtes-d'Armor
Total length
61km
Max discharge
10m³/s
Max Strahler
3
Segments matched
23
River geography1 admin regions · 17 communes
1 administrative regions crossed (GADM L2)
- Côtes-d'ArmorBretagne · France68.9 kmin this dpt
17 communes (L5)For countries with L5
- Louargat12.25 km
- Lannion8.66 km
- Le Vieux-Marché8.43 km
- Trégrom7.08 km
- Tonquédec4.53 km
- Pont-Melvez3.92 km
- Ploubezre3.84 km
- Belle-Isle-en-Terre3.79 km
- Bulat-Pestivien2.92 km
- Gurunhuel2.83 km
- Plougonver2.71 km
- Ploulec'h2.71 km
- Pluzunet2.43 km
- Plounévez-Moëdec2.06 km
- Maël-Pestivien0.80 km
- Plouaret0.00 km
- Ploumilliau0.00 km
4 intersecting protected areas
Côte de Granit rose-Sept-Iles
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Côte de Granit rose - Sept-Îles
IUCN Not ReportedMarine Protected Area (OSPAR)
Rivière Leguer, forêts de Beffou, Coat an Noz et Coat an Hay
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Pors mabo - beg leguer
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
1 page = 1 named river (aggregation of 23 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
555 distinct species · 4 783 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Léguer : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 95 interactions GloBI sur 6 types (connectance 13.5%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
61km
Max discharge
10,0m³/s
Max Strahler
3
Segments matched
23
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.