HydroBASINS lev08 watershed · #7080306830
Bassin de Similkameen 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 : Okanagan-Similkameen, Okanogan
Sub-basin area
820,2km²
Upstream area
8 279,6km²
Discharge
42,31m³/s
Mean elev.
1 261m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Similkameen River1382 km²
- Bassin de Ashnola River1059 km²
2 dept-equivalent regions (GADM L2)
- 732.1 km²89.0% of basin
- 90.8 km²11.0% of basin
15 intersecting protected areas
SNOWY PROTECTED AREA
IUCN IIProtected Area
103.65 km² overlap
Protected Area
23.37 km² overlap
Loomis
IUCN VNatural Resources Conservation Area
20.26 km² overlap
Chopaka Mountain
IUCN IbWilderness Study Area
20.24 km² overlap
Chopaka Mountain
IUCN VNatural Area Preserve
8.80 km² overlap
Pasayten
IUCN IbWilderness
5.60 km² overlap
Scotch Creek
IUCN VWildlife Area Complex
4.39 km² overlap
Privately Owned Conservation Area
1.94 km² overlap
Privately Owned Conservation Area
1.21 km² overlap
6 more protected areassorted by overlap area
Wildlife Habitat Areas
IUCN Not ApplicableWildlife Habitat Areas
0.76 km² overlap
Keremeos Creek - Wainwright
IUCN IVPrivately Owned Conservation Area
0.33 km² overlap
KEREMEOS COLUMNS PARK
IUCN Not ReportedA - Park
0.20 km² overlap
Cold Creek Property
IUCN IVPrivately Owned Conservation Area
0.17 km² overlap
Ginty's Pond
IUCN IVPrivately Owned Conservation Area
0.06 km² overlap
Privately Owned Conservation Area
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 187 distinct species · 51 700 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Similkameen River : 27 espèces reliées par 77 interactions GloBI sur 4 types (connectance 10.4%, 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°
4,1°C
Annual rain
345mm
Moisture idx (CMI)
-0,53
Runoff
133mm/an
PET
782mm
AET
301mm
Mean slope
19,2°
Water table
786cm
Forest
76%
Crops
4%
Urban
0%
Protected
16%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)