HydroBASINS lev08 watershed · #4080038400
Bassin de 古潭川
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, Shiranuka
Sub-basin area
118,4km²
Upstream area
118,4km²
Discharge
2,68m³/s
Mean elev.
68m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 73.8 km²62.2% of basin
- 41.0 km²34.6% of basin
4 intersecting protected areas
Prefectural Wildlife Protection Area
7.99 km² overlap
Common fishery right area
3.59 km² overlap
Kushiro seibu
IUCN VICoastline Marine Resource Development Area, designated sea area
3.55 km² overlap
Charo
IUCN IVPrefectural Wildlife Protection Area
0.11 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
173 distinct species · 1 582 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 古潭川 : 28 espèces reliées par 55 interactions GloBI sur 5 types (connectance 7.8%, filtre Serrano α=0.2). 10 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°
5,6°C
Annual rain
1 030mm
Moisture idx (CMI)
0,33
Runoff
716mm/an
PET
689mm
AET
657mm
Mean slope
5,0°
Water table
159cm
Forest
82%
Crops
9%
Urban
0%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)