HydroBASINS lev08 watershed · #7080381900
Bassin de Snake 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 : Asotin, Nez Perce, Wallowa
Sub-basin area
368,1km²
Upstream area
210 444,5km²
Discharge
1 206,63m³/s
Mean elev.
961m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Salmon River1252 km²
- Bassin de Snake River30 km²
3 dept-equivalent regions (GADM L2)
- 193.8 km²52.5% of basin
- Nez PerceIdaho · United States147.0 km²39.8% of basin
- 28.2 km²7.6% of basin
6 intersecting protected areas
Craig Mountain
IUCN VWildlife Management Area
58.50 km² overlap
Blue Mountains
IUCN VWildlife Area Complex
8.59 km² overlap
Garden Creek
IUCN VPrivate Conservation Land
5.73 km² overlap
Idaho Lands
IUCN VConservation Easement
4.53 km² overlap
Snake, Idaho And Oregon
IUCN VWild and Scenic River
2.91 km² overlap
The Nature Conservancy
IUCN VConservation Easement
0.12 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
724 distinct species · 3 809 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Snake River : 19 espèces reliées par 123 interactions GloBI sur 5 types (connectance 16.6%, filtre Serrano α=0.2). 20 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°
7,7°C
Annual rain
505mm
Moisture idx (CMI)
-0,48
Runoff
302mm/an
PET
992mm
AET
430mm
Mean slope
21,1°
Water table
626cm
Forest
86%
Crops
2%
Urban
0%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)