HydroBASINS lev08 watershed · #7080390130
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 : Gilliam, Klickitat, Morrow
Sub-basin area
92,4km²
Upstream area
546 605,6km²
Discharge
5 405,11m³/s
Mean elev.
167m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Alder Creek514 km²
- Bassin de Columbia River20 km²
3 dept-equivalent regions (GADM L2)
- Morrow71.2 km²76.9% of basin
- 18.8 km²20.3% of basin
- 2.6 km²2.8% of basin
1 intersecting protected areas
Willow Creek
IUCN VWildlife Area
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
307 distinct species · 7 541 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 : 17 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 129 interactions GloBI sur 4 types (connectance 24.4%, filtre Serrano α=0.2). 16 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°
12,0°C
Annual rain
219mm
Moisture idx (CMI)
-0,81
Runoff
46mm/an
PET
1 129mm
AET
192mm
Mean slope
2,2°
Water table
652cm
Forest
24%
Crops
78%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)