HydroBASINS lev08 watershed · #7080412030
Bassin de Grays Creek
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 : Le Haut-Saint-Laurent, Stormont, Dundas and Glengarry
Sub-basin area
45,4km²
Upstream area
776 691,4km²
Discharge
7 963,71m³/s
Mean elev.
52m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
2 dept-equivalent regions (GADM L2)
- 37.1 km²81.4% of basin
- 1.5 km²3.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
971 distinct species · 18 910 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Grays Creek : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 97 interactions GloBI sur 4 types (connectance 12.4%, filtre Serrano α=0.2). 13 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°
6,5°C
Annual rain
897mm
Moisture idx (CMI)
0,05
Runoff
530mm/an
PET
852mm
AET
647mm
Mean slope
0,7°
Water table
14cm
Forest
58%
Crops
39%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)