Ontologia

Ruisseau· 2 segments

橋場川

Crosses 5 administrative regions : Iiyama, Minamiuonuma, Nozawaonsen, Sakae, Uonuma

ruisseau

Total length

3km

Max discharge

1,1m³/s

Max Strahler

1

Segments matched

2

River geography5 admin regions · 0 communes

Parent watershed

hybas-40805408701507 km²

5 administrative regions crossed (GADM L2)

  • Minamiuonuma
    Niigata · Japan
    3.8 km
    in this dpt
  • Uonuma
    Niigata · Japan
    3.1 km
    in this dpt
  • Sakae
    Nagano · Japan
    1.8 km
    in this dpt
  • Iiyama
    Nagano · Japan
    0.8 km
    in this dpt
  • Nozawaonsen
    Nagano · Japan
    0.0 km
    in this dpt

1 intersecting protected areas

  • Nonomi

    IUCN IV

    Prefectural Wildlife Protection Area

1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

12 distinct species · 13 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

3km

Max discharge

1,1m³/s

Max Strahler

1

Segments matched

2

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