HydroBASINS lev08 watershed · #7080411370
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 3 administrative regions : Jefferson, Wasco, Wheeler
Sub-basin area
1 073,6km²
Upstream area
15 604km²
Discharge
66,42m³/s
Mean elev.
843m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de John Day River1585 km²
- Bassin de Bridge Creek703 km²
3 dept-equivalent regions (GADM L2)
- Jefferson412.8 km²38.4% of basin
- Wheeler407.7 km²37.9% of basin
- 255.5 km²23.7% of basin
4 intersecting protected areas
John Day River
IUCN VDesignated - Recreational
53.47 km² overlap
Spring Basin
IUCN IbWilderness Area
26.07 km² overlap
Pats Cabin
IUCN IbWilderness Study Area
4.43 km² overlap
John Day Fossil Beds
IUCN VNational Monument
4.08 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
705 distinct species · 10 616 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 John Day River : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 123 interactions GloBI sur 4 types (connectance 17.5%, filtre Serrano α=0.2). 18 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°
8,9°C
Annual rain
346mm
Moisture idx (CMI)
-0,67
Runoff
111mm/an
PET
1 079mm
AET
298mm
Mean slope
11,1°
Water table
865cm
Forest
6%
Crops
3%
Urban
0%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)