HydroBASINS lev08 watershed · #7080370470
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 : Benton, Franklin
Sub-basin area
330,3km²
Upstream area
250 143,4km²
Discharge
3 512,47m³/s
Mean elev.
181m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
2 dept-equivalent regions (GADM L2)
- Benton227.5 km²68.7% of basin
- Franklin103.7 km²31.3% of basin
1 intersecting protected areas
Hanford Reach
IUCN VNational Monument
65.78 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
632 distinct species · 4 872 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 : 22 espèces reliées par 127 interactions GloBI sur 5 types (connectance 16.3%, filtre Serrano α=0.2). 18 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°
11,5°C
Annual rain
184mm
Moisture idx (CMI)
-0,84
Runoff
39mm/an
PET
1 116mm
AET
163mm
Mean slope
1,8°
Water table
574cm
Forest
44%
Crops
23%
Urban
0%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)