Ontologia

Ruisseau· 3 segments

大石川

Crosses 3 administrative regions : Oguni, Sekikawa, Tainai

ruisseau

Total length

79km

Max discharge

2,3m³/s

Max Strahler

2

Segments matched

3

River geography3 admin regions · 0 communes

Parent watershed

hybas-40800433001106 km²

3 administrative regions crossed (GADM L2)

  • Sekikawa
    Niigata · Japan
    19.4 km
    in this dpt
  • Tainai
    Niigata · Japan
    0.0 km
    in this dpt
  • Oguni
    Yamagata · Japan
    0.0 km
    in this dpt

6 intersecting protected areas

1 page = 1 named river (aggregation of 3 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

9 distinct species · 12 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

79km

Max discharge

2,3m³/s

Max Strahler

2

Segments matched

3

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