HydroBASINS lev08 watershed · #4080037240
Bassin de 尻別川
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 17 administrative regions : Akaigawa, Date, Iwanai, Kimobetsu, Kuromatsunai +12
Sub-basin area
1 618,7km²
Upstream area
1 618,7km²
Discharge
59,55m³/s
Mean elev.
422m
Administrative coverage
17 dept-equivalent regions (GADM L2)
- 423.8 km²26.1% of basin
- 249.6 km²15.4% of basin
- 214.5 km²13.2% of basin
- 188.9 km²11.7% of basin
- 171.7 km²10.6% of basin
- 109.8 km²6.8% of basin
- 104.6 km²6.5% of basin
- 69.8 km²4.3% of basin
18 intersecting protected areas
Niseko-Shakotan-Otarukaigan
IUCN IIQuasi National Park
95.98 km² overlap
Shikotsu toya
IUCN IINational Park
71.85 km² overlap
Shikotsu and Muine
IUCN VGreen Corridor
35.45 km² overlap
Muineyama Shuhen
IUCN IVBiocenosis Protected Forest
13.35 km² overlap
Kyogoku
IUCN IVPrefectural Wildlife Protection Area
3.60 km² overlap
Chisenupuri
IUCN IVPrefectural Wildlife Protection Area
2.96 km² overlap
Pepenai Shisseishokusei
IUCN IVRare Population Protected Forest
2.50 km² overlap
Kokkuriko
IUCN IVPrefectural Wildlife Protection Area
2.47 km² overlap
Hangetsuko
IUCN IVPrefectural Wildlife Protection Area
2.28 km² overlap
9 more protected areassorted by overlap area
Shikotsuko
IUCN IVPrefectural Wildlife Protection Area
0.43 km² overlap
Oyachi
IUCN IVPrefectural Wildlife Protection Area
0.34 km² overlap
Nakayamatoge Akaezomatsu
IUCN IVRare Population Protected Forest
0.23 km² overlap
Misono Ezomatsu
IUCN IVRare Population Protected Forest
0.20 km² overlap
Yoichidake
IUCN VNatural Landscape Protection Area(Hokkaido)
0.16 km² overlap
Musawa
IUCN IVPrefectural Wildlife Protection Area
0.09 km² overlap
Fukidashi
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
0.05 km² overlap
Minami shiribeshi
IUCN VICoastline Marine Resource Development Area, designated sea area
0.04 km² overlap
Common fishery right area
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 126 distinct species · 5 279 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 尻別川 : 24 espèces reliées par 35 interactions GloBI sur 5 types (connectance 7.5%, filtre Serrano α=0.2). 7 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°
5,8°C
Annual rain
1 386mm
Moisture idx (CMI)
0,49
Runoff
987mm/an
PET
710mm
AET
660mm
Mean slope
9,6°
Water table
287cm
Forest
91%
Crops
6%
Urban
1%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)