HydroBASINS lev08 watershed · #4080038520
Bassin de 歴舟川
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 6 administrative regions : Makubetsu, Nakasatsunai, Sarabetsu, Shinhidaka, Taiki +1
Sub-basin area
565,4km²
Upstream area
565,4km²
Discharge
15,35m³/s
Mean elev.
491m
Administrative coverage
6 dept-equivalent regions (GADM L2)
- 526.7 km²93.0% of basin
- 10.1 km²1.8% of basin
- 9.0 km²1.6% of basin
- 7.9 km²1.4% of basin
- 6.9 km²1.2% of basin
- 5.8 km²1.0% of basin
8 intersecting protected areas
Hidakasanmyaku-Erimo-Tokachi
IUCN IINational Park
259.64 km² overlap
Hidaka Sammyaku
IUCN IbForest Ecosystem Reserve
247.14 km² overlap
Rekifunegawa
IUCN IVPrefectural Wildlife Protection Area
5.01 km² overlap
Moiwayama
IUCN IVPrefectural Wildlife Protection Area
2.82 km² overlap
Common fishery right area
0.09 km² overlap
Tokachi
IUCN VICoastline Marine Resource Development Area, designated sea area
0.09 km² overlap
Rare Population Protected Forest
0.04 km² overlap
Odadaini Mizunara Idenshigen
IUCN IVRare Population Protected Forest
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
204 distinct species · 505 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 歴舟川 : 22 espèces reliées par 52 interactions GloBI sur 5 types (connectance 8.7%, filtre Serrano α=0.2). 13 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°
4,5°C
Annual rain
1 441mm
Moisture idx (CMI)
0,53
Runoff
871mm/an
PET
675mm
AET
673mm
Mean slope
17,5°
Water table
512cm
Forest
31%
Crops
18%
Urban
0%
Protected
25%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)