HydroBASINS lev08 watershed · #7080377370
Bassin de Yakima 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
147,5km²
Upstream area
251 269,1km²
Discharge
3 511,14m³/s
Mean elev.
153m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Columbia River173 km²
- Bassin de Columbia River55 km²
2 dept-equivalent regions (GADM L2)
- Franklin94.5 km²63.9% of basin
- Benton53.4 km²36.1% of basin
3 intersecting protected areas
Hanford Reach
IUCN VNational Monument
4.84 km² overlap
Mcnary
IUCN IVNational Wildlife Refuge
1.10 km² overlap
Columbia Point South
IUCN VLocal Conservation Area
0.25 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 157 distinct species · 117 171 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Yakima River : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 74 interactions GloBI sur 3 types (connectance 15.9%, filtre Serrano α=0.2). 8 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°
11,8°C
Annual rain
192mm
Moisture idx (CMI)
-0,83
Runoff
21mm/an
PET
1 117mm
AET
169mm
Mean slope
1,4°
Water table
447cm
Forest
37%
Crops
59%
Urban
11%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)