HydroBASINS lev08 watershed · #4080343260
Bassin de 夕張川
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 14 administrative regions : Abira, Ashibetsu, Atsuma, Chitose, Ebetsu +9
Sub-basin area
1 166,7km²
Upstream area
1 166,8km²
Discharge
38,81m³/s
Mean elev.
365m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
14 dept-equivalent regions (GADM L2)
- 705.4 km²60.4% of basin
- 192.5 km²16.5% of basin
- 144.5 km²12.4% of basin
- 38.5 km²3.3% of basin
- 32.8 km²2.8% of basin
- 15.4 km²1.3% of basin
- 12.5 km²1.1% of basin
- 9.9 km²0.8% of basin
14 intersecting protected areas
Furano ashibetsu
IUCN VPrefectural Natural Park
83.33 km² overlap
Yubaridake
IUCN IVBiocenosis Protected Forest
10.69 km² overlap
Shimizunosawa
IUCN IVPrefectural Wildlife Protection Area
5.46 km² overlap
Daini shuparo
IUCN IVPrefectural Wildlife Protection Area
5.17 km² overlap
Shuparo
IUCN IVPrefectural Wildlife Protection Area
3.33 km² overlap
Kuriyama sakuraoka
IUCN IVPrefectural Wildlife Protection Area
0.80 km² overlap
Rare Population Protected Forest
0.19 km² overlap
Momijiyama Keyamahannoki
IUCN IVRare Population Protected Forest
0.15 km² overlap
Rare Population Protected Forest
0.11 km² overlap
5 more protected areassorted by overlap area
Nanbu Ezomatsu Idenshigen
IUCN IVRare Population Protected Forest
0.08 km² overlap
Rare Population Protected Forest
0.05 km² overlap
Fudou no taki
IUCN VNatural Landscape Protection Area(Hokkaido)
0.02 km² overlap
Chikuho Mizunara
IUCN IVRare Population Protected Forest
0.01 km² overlap
Ponkurukichiku Mizunara
IUCN IVRare Population Protected Forest
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 052 distinct species · 4 883 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 夕張川 : 29 espèces reliées par 46 interactions GloBI sur 5 types (connectance 6.5%, filtre Serrano α=0.2). 9 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 239mm
Moisture idx (CMI)
0,40
Runoff
1 056mm/an
PET
739mm
AET
686mm
Mean slope
10,0°
Water table
260cm
Forest
83%
Crops
11%
Urban
1%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)