HydroBASINS lev08 watershed · #7080466920
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 3 administrative regions : Allegan, Kent, Ottawa
Sub-basin area
731,5km²
Upstream area
13 858,9km²
Discharge
127,01m³/s
Mean elev.
220m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rogue River688 km²
- Bassin de Grand River235 km²
3 dept-equivalent regions (GADM L2)
- Kent603.4 km²82.3% of basin
- Ottawa128.6 km²17.5% of basin
- 0.8 km²0.1% of basin
30 intersecting protected areas
Bend Area
IUCN VOpen Space
1.07 km² overlap
92-09-0147
IUCN Not AssignedConservation Easement
0.25 km² overlap
10-41-0003-V
IUCN Not AssignedConservation Easement
0.20 km² overlap
00-41-0158
IUCN Not AssignedConservation Easement
0.20 km² overlap
Lamberton Lake
IUCN VNature Preserve
0.19 km² overlap
George P. Tilma
IUCN VNature Preserve
0.16 km² overlap
02-41-0026
IUCN Not AssignedConservation Easement
0.15 km² overlap
East Paris
IUCN VNature Park
0.10 km² overlap
98-09-0737
IUCN Not AssignedConservation Easement
0.10 km² overlap
21 more protected areassorted by overlap area
01-41-0072
IUCN Not AssignedConservation Easement
0.09 km² overlap
00-41-0111
IUCN Not AssignedConservation Easement
0.09 km² overlap
00-70-0237
IUCN Not AssignedConservation Easement
0.09 km² overlap
Frederik Meijers
IUCN VGardens
0.08 km² overlap
14-41-0030
IUCN Not AssignedConservation Easement
0.08 km² overlap
97-09-0777
IUCN Not AssignedConservation Easement
0.08 km² overlap
05-41-0160
IUCN Not AssignedConservation Easement
0.07 km² overlap
05-41-0034
IUCN Not AssignedConservation Easement
0.07 km² overlap
00-41-0168
IUCN Not AssignedConservation Easement
0.07 km² overlap
02-41-0112
IUCN Not AssignedConservation Easement
0.06 km² overlap
01-41-0131
IUCN Not AssignedConservation Easement
0.06 km² overlap
04-41-0039
IUCN Not AssignedConservation Easement
0.06 km² overlap
01-41-0185
IUCN Not AssignedConservation Easement
0.06 km² overlap
02-41-0031
IUCN Not AssignedConservation Easement
0.04 km² overlap
07-41-0143
IUCN Not AssignedConservation Easement
0.04 km² overlap
02-41-0149
IUCN Not AssignedConservation Easement
0.04 km² overlap
Steketee Woods
IUCN VLocal Conservation Area
0.04 km² overlap
99-09-0560
IUCN Not AssignedConservation Easement
0.04 km² overlap
96-09-0640
IUCN Not AssignedConservation Easement
0.04 km² overlap
03-41-0133
IUCN Not AssignedConservation Easement
0.03 km² overlap
00-41-0097
IUCN Not AssignedConservation Easement
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 014 distinct species · 1 207 360 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 : 35 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 67 interactions GloBI sur 3 types (connectance 7.8%, filtre Serrano α=0.2). 7 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°
8,5°C
Annual rain
896mm
Moisture idx (CMI)
-0,06
Runoff
288mm/an
PET
954mm
AET
708mm
Mean slope
1,1°
Water table
81cm
Forest
17%
Crops
26%
Urban
59%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)