HydroBASINS lev08 watershed · #7080057150
Bassin de Walbran Creek
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 : Capital, Cowichan Valley
Sub-basin area
338,8km²
Upstream area
338,8km²
Discharge
7,83m³/s
Mean elev.
405m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 315.7 km²92.9% of basin
- 17.2 km²5.1% of basin
5 intersecting protected areas
CARMANAH WALBRAN PARK
IUCN IIA - Park
163.02 km² overlap
National Park
32.61 km² overlap
Old Growth Management Areas (Mapped Legal)
IUCN Not ApplicableOld Growth Management Areas (Mapped Legal)
10.59 km² overlap
National Park
6.33 km² overlap
Wildlife Habitat Areas
IUCN Not ApplicableWildlife Habitat Areas
0.10 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
890 distinct species · 9 813 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 45 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 Walbran Creek : 36 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 78 interactions GloBI sur 6 types (connectance 7.9%, filtre Serrano α=0.2). 9 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°
7,8°C
Annual rain
2 330mm
Moisture idx (CMI)
0,71
Runoff
2 348mm/an
PET
666mm
AET
581mm
Mean slope
15,7°
Water table
666cm
Forest
98%
Crops
0%
Urban
0%
Protected
60%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)