HydroBASINS lev08 watershed · #7080389920
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 4 administrative regions : Adams, Baker, Idaho, Wallowa
Sub-basin area
1 600,7km²
Upstream area
171 665,6km²
Discharge
835,57m³/s
Mean elev.
1 243m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Pine Creek774 km²
- Bassin de Snake River199 km²
4 dept-equivalent regions (GADM L2)
- IdahoIdaho · United States709.7 km²44.2% of basin
- 619.0 km²38.6% of basin
- AdamsIdaho · United States219.8 km²13.7% of basin
- Baker55.9 km²3.5% of basin
8 intersecting protected areas
Hells Canyon
IUCN IbWilderness
833.03 km² overlap
Scenic Area
152.17 km² overlap
Snake, Idaho And Oregon
IUCN VWild and Scenic River
45.10 km² overlap
Little Granite
IUCN IaResearch Natural Area
27.22 km² overlap
Homestead
IUCN IbWilderness Study Area
20.99 km² overlap
Hitchcock
IUCN VConservation Easement
4.45 km² overlap
Hells Canyon
IUCN IbWilderness Area
3.83 km² overlap
Mcgraw Creek
IUCN IbWilderness Study Area
2.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 028 distinct species · 19 337 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 : 29 espèces reliées par 98 interactions GloBI sur 7 types (connectance 9.9%, 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°
6,1°C
Annual rain
570mm
Moisture idx (CMI)
-0,39
Runoff
375mm/an
PET
970mm
AET
470mm
Mean slope
22,2°
Water table
702cm
Forest
86%
Crops
2%
Urban
0%
Protected
22%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)