HydroBASINS lev08 watershed · #4080329060
Bassin de 空知川
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 19 administrative regions : Akabira, Asahikawa, Ashibetsu, Bibai, Biei +14
Sub-basin area
2 637,9km²
Upstream area
2 638,1km²
Discharge
92,3m³/s
Mean elev.
495m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
19 dept-equivalent regions (GADM L2)
- 834.6 km²31.6% of basin
- 595.3 km²22.5% of basin
- 586.6 km²22.2% of basin
- 205.3 km²7.8% of basin
- 127.8 km²4.8% of basin
- 110.0 km²4.2% of basin
- 41.5 km²1.6% of basin
- 31.5 km²1.2% of basin
30 intersecting protected areas
Furano ashibetsu
IUCN VPrefectural Natural Park
232.68 km² overlap
Daisetsuzan
IUCN IINational Park
141.35 km² overlap
Prefectural Wildlife Protection Area
110.54 km² overlap
Taisetsuzan
IUCN IbForest Ecosystem Reserve
95.02 km² overlap
Taisetsu and Hidaka
IUCN VGreen Corridor
49.46 km² overlap
Daisetsuzan
IUCN IVNational Wildlife Protection Area
25.39 km² overlap
Kanayamako
IUCN IVPrefectural Wildlife Protection Area
13.03 km² overlap
Kongozawa
IUCN IVPrefectural Wildlife Protection Area
6.47 km² overlap
Horooka
IUCN IVPrefectural Wildlife Protection Area
4.88 km² overlap
21 more protected areassorted by overlap area
Sokamappu
IUCN IVPrefectural Wildlife Protection Area
4.30 km² overlap
Yamabe
IUCN IVPrefectural Wildlife Protection Area
4.27 km² overlap
Asahi
IUCN IVPrefectural Wildlife Protection Area
4.12 km² overlap
Ikutora
IUCN IVPrefectural Wildlife Protection Area
3.89 km² overlap
Yubaridake
IUCN IVBiocenosis Protected Forest
3.67 km² overlap
Rare Population Protected Forest
1.52 km² overlap
Rubeshibe
IUCN IVPrefectural Wildlife Protection Area
0.96 km² overlap
Shirogane
IUCN IVPrefectural Wildlife Protection Area
0.57 km² overlap
Hidakasanmyaku-Erimo-Tokachi
IUCN IINational Park
0.24 km² overlap
Hidaka Sammyaku
IUCN IbForest Ecosystem Reserve
0.22 km² overlap
Ashibetsu
IUCN IVPrefectural Wildlife Protection Area
0.21 km² overlap
Ochinonbe Akaezomatsu
IUCN IVRare Population Protected Forest
0.17 km² overlap
Rare Population Protected Forest
0.16 km² overlap
Rare Population Protected Forest
0.12 km² overlap
Rare Population Protected Forest
0.12 km² overlap
Rare Population Protected Forest
0.11 km² overlap
Torinuma
IUCN IVPrefectural Wildlife Protection Area
0.09 km² overlap
Rare Population Protected Forest
0.08 km² overlap
Rare Population Protected Forest
0.06 km² overlap
Rare Population Protected Forest
0.06 km² overlap
Rare Population Protected Forest
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 669 distinct species · 10 071 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 45 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 空知川 : 31 espèces reliées par 76 interactions GloBI sur 6 types (connectance 7.7%, filtre Serrano α=0.2). 14 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°
4,9°C
Annual rain
1 289mm
Moisture idx (CMI)
0,41
Runoff
1 039mm/an
PET
739mm
AET
684mm
Mean slope
11,4°
Water table
297cm
Forest
79%
Crops
8%
Urban
2%
Protected
20%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)