HydroBASINS lev08 watershed · #7080372820
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, Garfield, Nez Perce
Sub-basin area
1 419,4km²
Upstream area
222 472km²
Discharge
1 293,23m³/s
Mean elev.
898m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Snake River368 km²
- Bassin de Joseph Creek15 km²
3 dept-equivalent regions (GADM L2)
- 958.1 km²67.3% of basin
- Nez PerceIdaho · United States317.8 km²22.3% of basin
- Garfield147.0 km²10.3% of basin
6 intersecting protected areas
Blue Mountains
IUCN VWildlife Area Complex
115.78 km² overlap
Craig Mountain
IUCN VWildlife Management Area
84.69 km² overlap
Asotin Creek
IUCN VEnvironmental System
4.99 km² overlap
Weatherly
IUCN VEnvironmental System
4.61 km² overlap
Conservation Easement
0.93 km² overlap
Anabel Osborn
IUCN VPrivate Conservation
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 838 distinct species · 99 794 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 Snake River : 21 espèces reliées par 82 interactions GloBI sur 3 types (connectance 16.5%, 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°
7,9°C
Annual rain
527mm
Moisture idx (CMI)
-0,45
Runoff
234mm/an
PET
979mm
AET
440mm
Mean slope
11,7°
Water table
639cm
Forest
44%
Crops
31%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)