Ruisseau· 3 segments
小河内沢川
Crosses 2 administrative regions : Nakagawa, Ōshika
ruisseau
Total length
10km
Max discharge
2,7m³/s
Max Strahler
2
Segments matched
3
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
- ŌshikaNagano · Japan6.9 kmin this dpt
- NakagawaNagano · Japan1.5 kmin this dpt
5 intersecting protected areas
Minami alps
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
Minami alps
IUCN IINational Park
Minami alps nanbu
IUCN IVPrefectural Wildlife Protection Area
Koshibu dam shuhen
IUCN IVPrefectural Wildlife Protection Area
Takayama
IUCN IVPrefectural Wildlife Protection Area
1 page = 1 named river (aggregation of 3 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
609 distinct species · 1 577 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
10km
Max discharge
2,7m³/s
Max Strahler
2
Segments matched
3
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.