HydroBASINS lev08 watershed · #4080037470
Bassin de 古丹別川
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 4 administrative regions : Haboro, Horokanai, Obira, Tomamae
Sub-basin area
420,8km²
Upstream area
421km²
Discharge
15m³/s
Mean elev.
197m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- 399.9 km²94.8% of basin
- 11.1 km²2.6% of basin
- 9.9 km²2.4% of basin
- 0.4 km²0.1% of basin
5 intersecting protected areas
Kotanbetsu
IUCN IVPrefectural Wildlife Protection Area
7.63 km² overlap
Rare Population Protected Forest
0.06 km² overlap
Common fishery right area
0.05 km² overlap
Rumoi hamamasu
IUCN VICoastline Marine Resource Development Area, designated sea area
0.05 km² overlap
Midorigaoka
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
63 distinct species · 128 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 12 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 古丹別川 : 12 espèces reliées par 8 interactions GloBI sur 2 types (connectance 12.1%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
6,1°C
Annual rain
1 332mm
Moisture idx (CMI)
0,48
Runoff
994mm/an
PET
698mm
AET
654mm
Mean slope
10,2°
Water table
236cm
Forest
98%
Crops
1%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)