HydroBASINS lev08 watershed · #7080474840
Bassin de Grand River
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 5 administrative regions across 2 countries : Brant, Haldimand-Norfolk, Hamilton, Lake Erie
Sub-basin area
1 232,5km²
Upstream area
6 896,5km²
Discharge
46,6m³/s
Mean elev.
202m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Grand River567 km²
- Bassin de Fairchild Creek396 km²
5 dept-equivalent regions (GADM L2)
- 624.7 km²50.6% of basin
- 263.1 km²21.3% of basin
- 207.5 km²16.8% of basin
- 139.3 km²11.3% of basin
- 0.1 km²0.0% of basin
7 intersecting protected areas
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
3.49 km² overlap
Provincial Park
1.86 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.51 km² overlap
Dundas Valley Conservation Area
IUCN IIIConservation Area
0.27 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.16 km² overlap
Dundas Valley
IUCN IIIConservation Area
0.05 km² overlap
National Wildlife Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 208 distinct species · 299 320 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Grand River : 21 espèces reliées par 72 interactions GloBI sur 3 types (connectance 13.6%, filtre Serrano α=0.2). 12 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°
7,9°C
Annual rain
911mm
Moisture idx (CMI)
0,06
Runoff
216mm/an
PET
856mm
AET
658mm
Mean slope
0,6°
Water table
41cm
Forest
2%
Crops
49%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)