HydroBASINS lev08 watershed · #7080328730
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 4 administrative regions : Douglas, Ferry, Grant, Okanogan
Sub-basin area
288,5km²
Upstream area
194 960,1km²
Discharge
3 169,97m³/s
Mean elev.
656m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Northrup Creek726 km²
- Bassin de Columbia River270 km²
4 dept-equivalent regions (GADM L2)
- 148.7 km²51.4% of basin
- Douglas111.8 km²38.6% of basin
- 25.5 km²8.8% of basin
- Grant3.3 km²1.2% of basin
1 intersecting protected areas
Big Bend - 2015
IUCN VEnvironmental System
8.78 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
759 distinct species · 7 829 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 113 interactions GloBI sur 4 types (connectance 15.2%, filtre Serrano α=0.2). 15 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°
8,4°C
Annual rain
317mm
Moisture idx (CMI)
-0,69
Runoff
169mm/an
PET
1 018mm
AET
275mm
Mean slope
8,2°
Water table
806cm
Forest
44%
Crops
14%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)