HydroBASINS lev08 watershed · #7080397140
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 5 administrative regions : Clark, Hood River, Klickitat, Multnomah, Skamania
Sub-basin area
1 882,1km²
Upstream area
608 027,3km²
Discharge
5 819,22m³/s
Mean elev.
625m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Lake Branch1245 km²
- Bassin de White Salmon River1003 km²
5 dept-equivalent regions (GADM L2)
- 1295.0 km²68.6% of basin
- 289.0 km²15.3% of basin
- 242.0 km²12.8% of basin
- Clark37.0 km²2.0% of basin
- 23.6 km²1.3% of basin
30 intersecting protected areas
Mark O. Hatfield
IUCN IbWilderness
261.04 km² overlap
Indian Heaven
IUCN IbWilderness
42.09 km² overlap
Trapper Creek
IUCN IbWilderness
24.05 km² overlap
Natural Resources Conservation Area
11.56 km² overlap
Steigerwald Lake
IUCN IVNational Wildlife Refuge
5.32 km² overlap
Conservation
IUCN VEasement
5.10 km² overlap
Columbia Falls
IUCN VNatural Area Preserve
4.77 km² overlap
Thornton T. Munger
IUCN IaResearch Natural Area
4.61 km² overlap
Wygant
IUCN VState Natural Area
3.01 km² overlap
21 more protected areassorted by overlap area
Monte Cristo
IUCN IaResearch Natural Area
2.52 km² overlap
Franz Lake
IUCN IVNational Wildlife Refuge
2.36 km² overlap
Shepperds Dell
IUCN VState Natural Area
2.18 km² overlap
Rooster Rock
IUCN VState Natural Area
2.12 km² overlap
Seneca Fouts Memorial
IUCN VState Natural Area
1.74 km² overlap
Pierce
IUCN IVNational Wildlife Refuge
1.58 km² overlap
Anadromous Spawning Area
0.98 km² overlap
McLoughlin
IUCN VState Natural Area
0.89 km² overlap
Washougal Oaks
IUCN VNatural Resources Conservation Area
0.70 km² overlap
George W. Joseph
IUCN VState Natural Area
0.61 km² overlap
State Natural Area
0.51 km² overlap
Sister Rocks
IUCN IaResearch Natural Area
0.49 km² overlap
Latourell Falls
IUCN VState Natural Area
0.36 km² overlap
Washougal Oaks
IUCN VNatural Area Preserve
0.33 km² overlap
Elowah Falls
IUCN VState Natural Area
0.28 km² overlap
Benson
IUCN VState Natural Area
0.24 km² overlap
Wildlife Area Complex
0.24 km² overlap
Bridal Veil Falls
IUCN VState Natural Area
0.10 km² overlap
Starvation Creek
IUCN VState Natural Area
0.08 km² overlap
Columbia Land Trust
IUCN VLocal Land Trust
0.06 km² overlap
Coopey Falls
IUCN VState Natural Area
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 377 distinct species · 459 694 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 76 interactions GloBI sur 4 types (connectance 12.8%, filtre Serrano α=0.2). 11 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°
8,2°C
Annual rain
2 076mm
Moisture idx (CMI)
0,55
Runoff
1 393mm/an
PET
873mm
AET
639mm
Mean slope
13,5°
Water table
445cm
Forest
96%
Crops
2%
Urban
1%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)