HydroBASINS lev08 watershed · #4080038420
Bassin de 直別川
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 2 administrative regions : Kushiro City, Urahoro
Sub-basin area
207,8km²
Upstream area
207,8km²
Discharge
1,37m³/s
Mean elev.
91m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 143.5 km²68.9% of basin
- 57.5 km²27.6% of basin
4 intersecting protected areas
Common fishery right area
7.03 km² overlap
Tokachi
IUCN VICoastline Marine Resource Development Area, designated sea area
5.04 km² overlap
Kushiro seibu
IUCN VICoastline Marine Resource Development Area, designated sea area
1.66 km² overlap
Kinashibetsu shitsugen
IUCN IVPrefectural Wildlife Protection Area
0.66 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
69 distinct species · 116 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 直別川 : 23 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 23 interactions GloBI sur 4 types (connectance 6.6%, 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°
5,3°C
Annual rain
1 027mm
Moisture idx (CMI)
0,32
Runoff
766mm/an
PET
697mm
AET
660mm
Mean slope
7,0°
Water table
176cm
Forest
79%
Crops
4%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)