HydroBASINS lev08 watershed · #4080038740
Bassin de 新冠川
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 4 administrative regions : Biratori, Hidaka, Niikappu, Shinhidaka
Sub-basin area
993,3km²
Upstream area
993,3km²
Discharge
0,69m³/s
Mean elev.
348m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- 567.3 km²57.0% of basin
- 385.3 km²38.7% of basin
- 17.4 km²1.7% of basin
- 17.0 km²1.7% of basin
11 intersecting protected areas
Hidakasanmyaku-Erimo-Tokachi
IUCN IINational Park
168.43 km² overlap
Hidaka Sammyaku
IUCN IbForest Ecosystem Reserve
160.23 km² overlap
Common fishery right area
8.53 km² overlap
Hidaka seibu
IUCN VICoastline Marine Resource Development Area, designated sea area
7.66 km² overlap
Hangandate
IUCN IVPrefectural Wildlife Protection Area
1.22 km² overlap
Hidaka tobu
IUCN VICoastline Marine Resource Development Area, designated sea area
0.78 km² overlap
Rare Population Protected Forest
0.11 km² overlap
Yagi no yashikibayashi
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
0.07 km² overlap
Monbetsu Kashiwa Idenshigen
IUCN IVRare Population Protected Forest
0.04 km² overlap
2 more protected areassorted by overlap area
Shizunai jinja
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
0.02 km² overlap
Kyuniikappu shuchikubokujo
IUCN IVPrefectural Wildlife Protection Area
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
757 distinct species · 2 586 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 新冠川 : 19 espèces reliées par 43 interactions GloBI sur 5 types (connectance 9.2%, filtre Serrano α=0.2). 12 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°
5,9°C
Annual rain
1 263mm
Moisture idx (CMI)
0,43
Runoff
902mm/an
PET
697mm
AET
687mm
Mean slope
12,4°
Water table
387cm
Forest
53%
Crops
14%
Urban
1%
Protected
7%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)