Rivière· 21 segments
破間川
Crosses 2 administrative regions : Sanjō, Uonuma
rivière
Total length
48km
Max discharge
38,8m³/s
Max Strahler
4
Segments matched
21
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
6 intersecting protected areas
Echigosanzan-Tadami
IUCN IIQuasi National Park
Echigo line
IUCN VGreen Corridor
Sumon
IUCN IVPrefectural Wildlife Protection Area
Sumondake
IUCN IVBiocenosis Protected Forest
Asakusadake
IUCN IVPrefectural Wildlife Protection Area
Naritasan
IUCN IVPrefectural Wildlife Protection Area
1 page = 1 named river (aggregation of 21 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
6 distinct species · 19 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
48km
Max discharge
38,8m³/s
Max Strahler
4
Segments matched
21
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.