HydroBASINS lev08 watershed · #7080400500
Bassin de Old Woman's 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 2 administrative regions : Bruce, Lake Hurron
Sub-basin area
781,6km²
Upstream area
53 496,8km²
Discharge
431,17m³/s
Mean elev.
180m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Judges Creek1631 km²
- Bassin de Key River955 km²
2 dept-equivalent regions (GADM L2)
- 662.0 km²84.5% of basin
- 121.4 km²15.5% of basin
26 intersecting protected areas
Provincial Park
3.94 km² overlap
Provincial Park
3.32 km² overlap
Provincial Park
2.76 km² overlap
National Park
1.57 km² overlap
Cape Chin
IUCN IaNGO/Land Trust/Agency - Fee Simple Property
1.22 km² overlap
Faspaw (Johnstone North)
IUCN IVNGO/Land Trust/Agency - Fee Simple Property
1.12 km² overlap
Privately Protected Area
0.90 km² overlap
Warder
IUCN IVNGO/Land Trust/Agency - Fee Simple Property
0.82 km² overlap
NGO/Land Trust/Agency - Fee Simple Property
0.80 km² overlap
17 more protected areassorted by overlap area
Lillie Family
IUCN IaNGO/Land Trust/Agency - Fee Simple Property
0.38 km² overlap
Laird
IUCN IIINGO/Land Trust/Agency - Fee Simple Property
0.38 km² overlap
Dyer's Bay Cliffs
IUCN IaNGO/Land Trust/Agency - Fee Simple Property
0.35 km² overlap
Cape Chin Woods
IUCN IaNGO/Land Trust/Agency - Fee Simple Property
0.35 km² overlap
Otter Lake
IUCN IaNGO/Land Trust/Agency - Fee Simple Property
0.29 km² overlap
Privately Protected Area
0.25 km² overlap
NGO/Land Trust/Agency - Fee Simple Property
0.24 km² overlap
Lefeuvre-Chupac
IUCN IVNGO/Land Trust/Agency - Fee Simple Property
0.20 km² overlap
Minhinnick
IUCN IVNGO/Land Trust/Agency - Fee Simple Property
0.19 km² overlap
Manore
IUCN IVNGO/Land Trust/Agency - Fee Simple Property
0.16 km² overlap
Lindsay
IUCN IaNGO/Land Trust/Agency - Fee Simple Property
0.10 km² overlap
Westover
IUCN IVNGO/Land Trust/Agency - Fee Simple Property
0.07 km² overlap
Porter
IUCN IVNGO/Land Trust/Agency - Fee Simple Property
0.07 km² overlap
Schneider
IUCN IVNGO/Land Trust/Agency - Fee Simple Property
0.06 km² overlap
Vansickle
IUCN IaNGO/Land Trust/Agency - Fee Simple Property
0.05 km² overlap
Schulz
IUCN IaNGO/Land Trust/Agency - Fee Simple Property
0.02 km² overlap
Baker
IUCN IaNGO/Land Trust/Agency - Fee Simple Property
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 611 distinct species · 104 391 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 Old Woman's River : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 77 interactions GloBI sur 2 types (connectance 12.9%, 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°
5,8°C
Annual rain
882mm
Moisture idx (CMI)
0,15
Runoff
235mm/an
PET
747mm
AET
577mm
Mean slope
0,3°
Water table
23cm
Forest
5%
Crops
7%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)