HydroBASINS lev08 watershed · #4080573090
Bassin de 宮川
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 2 administrative regions : Hida, Takayama
Sub-basin area
276,7km²
Upstream area
744km²
Discharge
31,48m³/s
Mean elev.
849m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de 川上川313 km²
- Bassin de 小八賀川155 km²
2 dept-equivalent regions (GADM L2)
- TakayamaGifu · Japan153.2 km²55.4% of basin
- 123.6 km²44.6% of basin
9 intersecting protected areas
Uetsu shijuhattaki
IUCN VPrefectural Natural Park
7.73 km² overlap
Ayumiyama
IUCN IVPrefectural Wildlife Protection Area
4.04 km² overlap
Okuhida zugo nagareha
IUCN VPrefectural Natural Park
3.93 km² overlap
Senkoji
IUCN IVPrefectural Wildlife Protection Area
1.84 km² overlap
Ankokuji
IUCN IVPrefectural Wildlife Protection Area
1.13 km² overlap
Sagodani
IUCN IVPrefectural Wildlife Protection Area
0.25 km² overlap
Ketawakamiya
IUCN VSpecial green space conservation districts
0.02 km² overlap
Araki jinja
IUCN VGreen Space Environment Conservation Area(Gifu)
0.01 km² overlap
Senkouji
IUCN VGreen Space Environment Conservation Area(Gifu)
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
505 distinct species · 1 203 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 20 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 宮川 : 17 espèces reliées par 24 interactions GloBI sur 3 types (connectance 11.4%, filtre Serrano α=0.2). 4 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°
9,5°C
Annual rain
1 871mm
Moisture idx (CMI)
0,50
Runoff
1 390mm/an
PET
930mm
AET
928mm
Mean slope
14,2°
Water table
507cm
Forest
97%
Crops
2%
Urban
8%
Protected
7%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)