HydroBASINS lev08 watershed · #7080302090
Bassin de Chilliwack 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 across 2 countries : Fraser Valley, Whatcom
Sub-basin area
1 614,2km²
Upstream area
1 614,3km²
Discharge
69,53m³/s
Mean elev.
917m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 987.1 km²61.0% of basin
- 628.1 km²38.8% of basin
16 intersecting protected areas
North Cascades
IUCN IINational Park
250.98 km² overlap
Stephen Mather
IUCN IbWilderness Area
248.80 km² overlap
Mount Baker
IUCN IbWilderness
129.85 km² overlap
A - Park
89.88 km² overlap
Wildlife Habitat Areas
IUCN Not ApplicableWildlife Habitat Areas
50.15 km² overlap
CULTUS LAKE PARK
IUCN IIA - Park
27.31 km² overlap
Old Growth Management Areas (Mapped Legal)
IUCN Not ApplicableOld Growth Management Areas (Mapped Legal)
24.21 km² overlap
LIUMCHEN ECOLOGICAL RESERVE
IUCN IbEcological Reserve
21.62 km² overlap
Wildlife Management Area
1.51 km² overlap
7 more protected areassorted by overlap area
Ecological Reserve
0.85 km² overlap
CHILLIWACK RIVER PARK
IUCN IIA - Park
0.28 km² overlap
Great Blue Heron Nature Reserve
IUCN Not ApplicableNature Reserve
0.15 km² overlap
Chilliwack River
IUCN IVPrivately Owned Conservation Area
0.10 km² overlap
Ecological Reserve
0.03 km² overlap
Katherine Tye
IUCN IVPrivately Owned Conservation Area
0.03 km² overlap
Ryder Creek
IUCN IVPrivately Owned Conservation Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 350 distinct species · 287 675 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 Chilliwack River : 23 espèces reliées par 74 interactions GloBI sur 4 types (connectance 13.2%, filtre Serrano α=0.2). 11 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°
5,5°C
Annual rain
1 430mm
Moisture idx (CMI)
0,51
Runoff
1 340mm/an
PET
701mm
AET
563mm
Mean slope
21,0°
Water table
706cm
Forest
71%
Crops
8%
Urban
2%
Protected
32%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)