HydroBASINS lev08 watershed · #7080479250
Bassin de Saint Clair 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 8 administrative regions across 2 countries : Chatham-Kent, Lake Hurron, Lake St. Clair, Lambton, Lapeer +3
Sub-basin area
2 256,8km²
Upstream area
580 101,8km²
Discharge
9 186,94m³/s
Mean elev.
203m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Black River1822 km²
- Bassin de Hickory Creek1594 km²
8 dept-equivalent regions (GADM L2)
- Saint Clair1164.5 km²51.5% of basin
- 387.5 km²17.1% of basin
- 277.9 km²12.3% of basin
- 210.9 km²9.3% of basin
- 203.3 km²9.0% of basin
- 14.6 km²0.6% of basin
- 1.6 km²0.1% of basin
- 0.3 km²0.0% of basin
30 intersecting protected areas
06-74-0174
IUCN Not AssignedConservation Easement
103.08 km² overlap
St. Johns Marsh
IUCN VState Wildlife Area
10.05 km² overlap
06-74-0032
IUCN Not AssignedConservation Easement
4.13 km² overlap
Conservation Reserve
2.46 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
2.44 km² overlap
Natural Area Prairie Woods Nature Study Area
IUCN Not AssignedNatural Area
1.71 km² overlap
Bowens Creek Lands
IUCN IVMunicipal Heritage/Natural Area
1.57 km² overlap
W. Darcy McKeough Floodway
IUCN VIConservation Area
0.81 km² overlap
Game Area
0.56 km² overlap
21 more protected areassorted by overlap area
Forest
IUCN VReserve
0.55 km² overlap
St. Clair Township State
IUCN VGame Area
0.45 km² overlap
Edna Newnan
IUCN VNature Sanctuary
0.35 km² overlap
Nature Preserve
0.32 km² overlap
91-14-1374
IUCN Not AssignedConservation Easement
0.32 km² overlap
03-74-0020
IUCN Not AssignedConservation Easement
0.28 km² overlap
Salt River Marsh
IUCN VState Wildlife Area
0.24 km² overlap
07-74-0061
IUCN Not AssignedConservation Easement
0.23 km² overlap
11-74-0142
IUCN Not AssignedConservation Easement
0.22 km² overlap
State
IUCN VForest
0.20 km² overlap
Nature Preserve
0.18 km² overlap
00-00-0012
IUCN Not AssignedConservation Easement
0.18 km² overlap
05-50-0007
IUCN Not AssignedConservation Easement
0.18 km² overlap
Gerrits
IUCN VSanctuary
0.16 km² overlap
09-74-0114
IUCN Not AssignedConservation Easement
0.16 km² overlap
Plant Preserve
0.16 km² overlap
93-14-0052
IUCN Not AssignedConservation Easement
0.14 km² overlap
00-00-0050
IUCN Not AssignedConservation Easement
0.14 km² overlap
97-10-0526
IUCN Not AssignedConservation Easement
0.13 km² overlap
09-50-0066
IUCN Not AssignedConservation Easement
0.13 km² overlap
13-50-0095
IUCN Not AssignedConservation Easement
0.13 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 965 distinct species · 1 117 042 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 Saint Clair River : 25 espèces reliées par 61 interactions GloBI sur 3 types (connectance 11.6%, 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°
8,7°C
Annual rain
786mm
Moisture idx (CMI)
-0,14
Runoff
156mm/an
PET
918mm
AET
654mm
Mean slope
0,4°
Water table
25cm
Forest
9%
Crops
33%
Urban
8%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)