HydroBASINS lev08 watershed · #7080333250
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 : Ferry, Grant, Lincoln, Okanogan
Sub-basin area
270,1km²
Upstream area
193 945,6km²
Discharge
3 164,57m³/s
Mean elev.
617m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sanpoil River2440 km²
- Bassin de Hawk Creek862 km²
4 dept-equivalent regions (GADM L2)
- Lincoln149.5 km²55.2% of basin
- 87.5 km²32.3% of basin
- 26.6 km²9.8% of basin
- Grant7.2 km²2.7% of basin
2 intersecting protected areas
Reserve Program
5.45 km² overlap
Seaton Canyon
IUCN VPrivate Conservation Land
1.29 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
410 distinct species · 4 910 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 : 26 espèces reliées par 100 interactions GloBI sur 4 types (connectance 11.1%, filtre Serrano α=0.2). 17 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°
8,6°C
Annual rain
312mm
Moisture idx (CMI)
-0,69
Runoff
173mm/an
PET
1 026mm
AET
271mm
Mean slope
8,6°
Water table
784cm
Forest
43%
Crops
24%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)