HydroBASINS lev08 watershed · #7080345900
Bassin de Columbia 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 : Chelan, Douglas
Sub-basin area
320,8km²
Upstream area
228 648,3km²
Discharge
3 373,39m³/s
Mean elev.
749m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Entiat River1070 km²
- Bassin de Columbia River317 km²
2 dept-equivalent regions (GADM L2)
- Douglas187.7 km²58.3% of basin
- 134.0 km²41.7% of basin
3 intersecting protected areas
Wildlife Area Complex
26.62 km² overlap
Entiat Slopes
IUCN VNatural Area Preserve
1.99 km² overlap
Thompson Clover
IUCN IaResearch Natural Area
0.84 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
749 distinct species · 24 277 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 Columbia River : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 81 interactions GloBI sur 4 types (connectance 14.4%, filtre Serrano α=0.2). 7 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°
7,3°C
Annual rain
399mm
Moisture idx (CMI)
-0,56
Runoff
308mm/an
PET
934mm
AET
326mm
Mean slope
13,9°
Water table
827cm
Forest
45%
Crops
18%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)