HydroBASINS lev08 watershed · #7080381860
Bassin de Rivière de la Grande Coudée
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 4 administrative regions across 2 countries : Beauce-Sartigan, Franklin, Le Granit, Oxford
Sub-basin area
2 158,6km²
Upstream area
2 158,6km²
Discharge
45,22m³/s
Mean elev.
464m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 1493.4 km²69.0% of basin
- 645.1 km²29.8% of basin
- Franklin14.6 km²0.7% of basin
- 10.6 km²0.5% of basin
13 intersecting protected areas
White-tailed deer yard
71.84 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
7.14 km² overlap
Ecological reserve
3.07 km² overlap
03452R001 Biological Refuge
IUCN IVBiological refuge
2.52 km² overlap
Quebec's national park
2.12 km² overlap
Marais-du-Lac-Mégantic Nature Reserve
IUCN Not ReportedRecognized nature reserve
0.86 km² overlap
Rare forest ecosystem
0.76 km² overlap
Natural Area Under Private Stewardship
0.76 km² overlap
Ecological reserve
0.75 km² overlap
4 more protected areassorted by overlap area
forêt verte Thomas Eser Natural Area Under Private Stewardship
IUCN Not ReportedNatural Area Under Private Stewardship
0.71 km² overlap
Old-growth forest
0.35 km² overlap
Muskrat habitat
0.28 km² overlap
Val-Racine (partie Dubé) Natural Area Under Private Stewardship
IUCN Not ReportedNatural Area Under Private Stewardship
0.06 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 678 distinct species · 87 381 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 de la Grande Coudée : 24 espèces reliées par 74 interactions GloBI sur 3 types (connectance 13.2%, 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).
Hydroclimate (BasinATLAS lev08)
Mean T°
3,3°C
Annual rain
1 000mm
Moisture idx (CMI)
0,26
Runoff
697mm/an
PET
737mm
AET
636mm
Mean slope
3,6°
Water table
111cm
Forest
96%
Crops
7%
Urban
0%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)