HydroBASINS lev08 watershed · #7080375490
Bassin de North Fork Touchet 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 : Columbia, Walla Walla
Sub-basin area
425,1km²
Upstream area
425,2km²
Discharge
1,5m³/s
Mean elev.
1 101m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- Columbia419.8 km²98.5% of basin
- 6.4 km²1.5% of basin
2 intersecting protected areas
Fairchild
IUCN Not AssignedConservation Easement
0.36 km² overlap
Wenaha-Tucannon
IUCN IbWilderness
0.34 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
882 distinct species · 10 376 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 49 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 North Fork Touchet River : 35 espèces reliées par 97 interactions GloBI sur 5 types (connectance 8.2%, filtre Serrano α=0.2). 14 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°
6,4°C
Annual rain
701mm
Moisture idx (CMI)
-0,24
Runoff
112mm/an
PET
928mm
AET
534mm
Mean slope
15,5°
Water table
909cm
Forest
93%
Crops
16%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)