HydroBASINS lev08 watershed · #7080409370
Bassin de John Day 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 : Gilliam, Sherman, Wasco, Wheeler
Sub-basin area
97km²
Upstream area
16 163,9km²
Discharge
68,29m³/s
Mean elev.
654m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de John Day River1074 km²
- Bassin de Butte Creek463 km²
4 dept-equivalent regions (GADM L2)
- 56.8 km²58.5% of basin
- Sherman23.1 km²23.8% of basin
- 16.5 km²17.0% of basin
- Wheeler0.8 km²0.8% of basin
2 intersecting protected areas
North Pole Ridge
IUCN IbWilderness Study Area
27.52 km² overlap
John Day River
IUCN VDesignated - Recreational
15.85 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
80 distinct species · 165 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 John Day River : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 76 interactions GloBI sur 3 types (connectance 12.1%, 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°
9,9°C
Annual rain
293mm
Moisture idx (CMI)
-0,73
Runoff
109mm/an
PET
1 077mm
AET
255mm
Mean slope
15,5°
Water table
787cm
Forest
0%
Crops
10%
Urban
0%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)