HydroBASINS lev08 watershed · #4080562470
Bassin de 片品川
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 10 administrative regions : Fujimi, Hinoemata, Katashina, Kawaba, Kiryū +5
Sub-basin area
682,3km²
Upstream area
682,4km²
Discharge
15,42m³/s
Mean elev.
1 232m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
10 dept-equivalent regions (GADM L2)
- 322.6 km²47.3% of basin
- 306.0 km²44.8% of basin
- 33.4 km²4.9% of basin
- 9.2 km²1.4% of basin
- 5.6 km²0.8% of basin
- 2.9 km²0.4% of basin
- 1.3 km²0.2% of basin
- 0.7 km²0.1% of basin
19 intersecting protected areas
Oze
IUCN IINational Park
114.53 km² overlap
Nikko
IUCN VNational Park
44.72 km² overlap
Oze
IUCN IVPrefectural Wildlife Protection Area
43.07 km² overlap
Marunuma sugenuma
IUCN IVPrefectural Wildlife Protection Area
34.23 km² overlap
Nikko Line
IUCN VGreen Corridor
13.57 km² overlap
Oze(TEPCO Renewable Power,Inc.Corporate Forest) Kurumazawa-Area
IUCN Not ApplicableOECM
5.12 km² overlap
Oze
IUCN Not ReportedWetland of International Importance (Ramsar Site)
3.31 km² overlap
Nikko
IUCN IVPrefectural Wildlife Protection Area
2.66 km² overlap
Sukai san
IUCN VPrefectural Nature Conservation Area
1.84 km² overlap
10 more protected areassorted by overlap area
Okukinu
IUCN IVPrefectural Wildlife Protection Area
1.52 km² overlap
Okukinu
IUCN IVBiocenosis Protected Forest
1.40 km² overlap
Minakami
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
0.50 km² overlap
Kesamaru yama hokuimen
IUCN VPrefectural Nature Conservation Area
0.43 km² overlap
Okuaizu
IUCN IbForest Ecosystem Reserve
0.33 km² overlap
Akagiyama
IUCN IVPrefectural Wildlife Protection Area
0.23 km² overlap
Rare Population Protected Forest
0.12 km² overlap
Rare Population Protected Forest
0.09 km² overlap
Prefectural Nature Conservation Area
0.08 km² overlap
Oze
IUCN IVPrefectural Wildlife Protection Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 323 distinct species · 9 664 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de 片品川 : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 29 interactions GloBI sur 3 types (connectance 7.1%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
6,9°C
Annual rain
1 967mm
Moisture idx (CMI)
0,58
Runoff
753mm/an
PET
800mm
AET
798mm
Mean slope
16,8°
Water table
512cm
Forest
70%
Crops
33%
Urban
2%
Protected
24%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)