HydroBASINS lev08 watershed · #7080351990
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 3 administrative regions : Chelan, Douglas, Kittitas
Sub-basin area
126,4km²
Upstream area
235 071,8km²
Discharge
3 492,06m³/s
Mean elev.
698m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Douglas Creek2062 km²
- Bassin de Columbia River158 km²
3 dept-equivalent regions (GADM L2)
- 97.4 km²76.8% of basin
- Douglas21.8 km²17.2% of basin
- 7.6 km²6.0% of basin
4 intersecting protected areas
Colockum
IUCN VWildlife Area Complex
73.04 km² overlap
Colockum
IUCN VGame Range
10.42 km² overlap
Columbia Basin
IUCN VWildlife Area Complex
0.40 km² overlap
Grant Co PUD#2
IUCN VConservation Land
0.36 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
448 distinct species · 4 339 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 reliées par 81 interactions GloBI sur 5 types (connectance 9.9%, filtre Serrano α=0.2). 14 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°
8,0°C
Annual rain
323mm
Moisture idx (CMI)
-0,63
Runoff
160mm/an
PET
954mm
AET
259mm
Mean slope
11,5°
Water table
797cm
Forest
69%
Crops
2%
Urban
0%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)