HydroBASINS lev08 watershed · #7080299350
Bassin de Lillooet 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 1 administrative regions : Fraser Valley
Sub-basin area
718,8km²
Upstream area
7 942,7km²
Discharge
292,09m³/s
Mean elev.
619m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Lillooet River2994 km²
- Bassin de Big Silver Creek520 km²
1 dept-equivalent regions (GADM L2)
- 703.2 km²97.5% of basin
5 intersecting protected areas
Old Growth Management Areas (Mapped Legal)
IUCN Not ApplicableOld Growth Management Areas (Mapped Legal)
36.48 km² overlap
SASQUATCH PARK
IUCN IIA - Park
8.29 km² overlap
Wildlife Habitat Areas
IUCN Not ApplicableWildlife Habitat Areas
7.14 km² overlap
Wildlife Management Area
6.03 km² overlap
Chehalis River Conservancy
IUCN IVPrivately Owned Conservation Area
0.36 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 228 distinct species · 58 542 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Lillooet River : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 66 interactions GloBI sur 4 types (connectance 13.3%, filtre Serrano α=0.2). 12 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
1 393mm
Moisture idx (CMI)
0,46
Runoff
1 391mm/an
PET
735mm
AET
573mm
Mean slope
18,4°
Water table
653cm
Forest
73%
Crops
1%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)