HydroBASINS lev08 watershed · #7080439760
Bassin de Eighteen Mile 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 4 administrative regions across 2 countries : Bruce, Huron, Lake Hurron
Sub-basin area
750,6km²
Upstream area
750,7km²
Discharge
5,73m³/s
Mean elev.
190m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 528.2 km²70.2% of basin
- 112.6 km²15.0% of basin
- 68.3 km²9.1% of basin
- 43.0 km²5.7% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
410 distinct species · 11 410 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 Eighteen Mile River : 22 espèces reliées par 97 interactions GloBI sur 4 types (connectance 16.3%, 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°
7,1°C
Annual rain
906mm
Moisture idx (CMI)
0,11
Runoff
241mm/an
PET
805mm
AET
617mm
Mean slope
0,2°
Water table
17cm
Forest
0%
Crops
76%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)