HydroBASINS lev08 watershed · #7080319800
Bassin de Rivière Mégiscane
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 1 administrative regions : Vallée-de-l'Or
Sub-basin area
828,3km²
Upstream area
9 155,7km²
Discharge
155,06m³/s
Mean elev.
356m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rivière Mégiscane1539 km²
- Bassin de Rivière Attic1018 km²
1 dept-equivalent regions (GADM L2)
- 830.8 km²100.0% of basin
8 intersecting protected areas
Proposed biodiversity reserve
26.48 km² overlap
Land reserved for protected area
4.33 km² overlap
Old-growth forest
3.84 km² overlap
08451R022 Biological Refuge
IUCN IVBiological refuge
3.72 km² overlap
08451R031 Biological Refuge
IUCN IVBiological refuge
2.91 km² overlap
Water fowl gathering area
1.86 km² overlap
Muskrat habitat
1.54 km² overlap
08451R025 Biological Refuge
IUCN IVBiological refuge
0.20 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
77 distinct species · 214 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 de Rivière Mégiscane : 23 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 44 interactions GloBI sur 3 types (connectance 9.5%, filtre Serrano α=0.2). 8 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°
1,0°C
Annual rain
957mm
Moisture idx (CMI)
0,28
Runoff
536mm/an
PET
689mm
AET
583mm
Mean slope
1,4°
Water table
27cm
Forest
91%
Crops
0%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)