Ruisseau· 7 segments
声問川
Crosses 1 administrative regions : Wakkanai
Total length
34km
Max discharge
9,4m³/s
Max Strahler
3
Segments matched
7
River geography1 admin regions · 0 communes
1 administrative regions crossed (GADM L2)
- WakkanaiHokkaido · Japan20.4 kmin this dpt
5 intersecting protected areas
Common fishery right area
Soya seibu
IUCN VICoastline Marine Resource Development Area, designated sea area
Koetoi onuma
IUCN IVPrefectural Wildlife Protection Area
Oonuma
IUCN VNatural Landscape Protection Area(Hokkaido)
Rare Population Protected Forest
1 page = 1 named river (aggregation of 7 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
3 distinct species · 3 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
34km
Max discharge
9,4m³/s
Max Strahler
3
Segments matched
7
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.