HydroBASINS lev08 watershed · #2080481390
Bassin du Lié
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 2 administrative regions : Côtes-d'Armor, Morbihan
Sub-basin area
475,2km²
Upstream area
475,3km²
Discharge
9,34m³/s
Mean elev.
168m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 423.5 km²88.9% of basin
- 53.1 km²11.1% of basin
33 communes (GADM L5)Available for FRA, RWA
- Plessala51.41 km²100% commune
- Plœuc-sur-Lié43.42 km²96% commune
- La Motte35.67 km²82% commune
- Plouguenast34.82 km²100% commune
- Plémet32.94 km²78% commune
- Bréhan32.16 km²62% commune
- Plémy24.67 km²62% commune
- Langast20.52 km²100% commune
- Saint-Gouéno19.12 km²97% commune
- L'Hermitage-Lorge18.75 km²47% commune
- Le Cambout18.23 km²100% commune
- Plumieux18.16 km²45% commune
- Les Forges17.14 km²32% commune
- La Prénessaye16.97 km²100% commune
- Gausson16.44 km²100% commune
- Saint-Étienne-du-Gué-de-l'Isle15.00 km²100% commune
- Saint-Barnabé14.70 km²64% commune
- La Ferrière13.27 km²84% commune
- Saint-Gilles-du-Mené12.32 km²91% commune
- Loudéac10.93 km²13% commune
- Rohan3.79 km²16% commune
- La Chèze2.51 km²100% commune
- Saint-Hervé1.01 km²10% commune
- Grâce-Uzel0.98 km²12% commune
- Trébry0.47 km²2% commune
- Coëtlogon0.38 km²2% commune
- Trédaniel0.37 km²2% commune
- Saint-Jacut-du-Mené0.35 km²2% commune
- Collinée0.05 km²1% commune
- Laurenan0.05 km²0% commune
- Saint-Glen0.00 km²0% commune
- Allineuc0.00 km²0% commune
- Trévé0.00 km²0% commune
1 intersecting protected areas
Forêt de Lorge, landes de Lanfains, cime de Kerchouan
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.97 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 510 distinct species · 27 347 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Bassin du Lié : 18 espèces reliées par 102 interactions GloBI sur 6 types (connectance 19.3%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
10,7°C
Annual rain
851mm
Moisture idx (CMI)
0,17
Runoff
620mm/an
PET
704mm
AET
546mm
Mean slope
2,7°
Water table
215cm
Forest
5%
Crops
68%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)