Ontologia

Fleuve· 126 segments

John Day River

Crosses 7 administrative regions : Gilliam, Grant, Jefferson, Klickitat, Sherman +2

fleuve

Total length

467km

Max discharge

5 378,6m³/s

Max Strahler

8

Segments matched

126

River geography7 admin regions · 0 communes

Parent watershed

hybas-70804207101585 km²

7 administrative regions crossed (GADM L2)

  • Grant
    Oregon · United States
    168.2 km
    in this dpt
  • Wheeler
    Oregon · United States
    119.2 km
    in this dpt
  • Gilliam
    Oregon · United States
    111.7 km
    in this dpt
  • Sherman
    Oregon · United States
    73.6 km
    in this dpt
  • Wasco
    Oregon · United States
    44.3 km
    in this dpt
  • Jefferson
    Oregon · United States
    5.7 km
    in this dpt
  • Klickitat
    Washington · United States
    0.6 km
    in this dpt

9 intersecting protected areas

1 page = 1 named river (aggregation of 126 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

3 distinct species · 4 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Not enough documented interactions to build a meaningful graph for this territory.

Hydrology (HydroRIVERS v10)

Total length

467km

Max discharge

5 378,6m³/s

Max Strahler

8

Segments matched

126

HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.