HydroBASINS lev08 watershed · #4080343530
Bassin de 千歳川
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 10 administrative regions : Chitose, Date, Ebetsu, Eniwa, Kitahiroshima +5
Sub-basin area
1 205,4km²
Upstream area
1 205,4km²
Discharge
34,64m³/s
Mean elev.
185m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
10 dept-equivalent regions (GADM L2)
- 557.4 km²46.2% of basin
- 282.6 km²23.4% of basin
- 135.7 km²11.2% of basin
- 102.7 km²8.5% of basin
- 44.4 km²3.7% of basin
- 41.1 km²3.4% of basin
- 13.5 km²1.1% of basin
- 11.7 km²1.0% of basin
24 intersecting protected areas
Shikotsu toya
IUCN IINational Park
247.15 km² overlap
Shikotsuko
IUCN IVPrefectural Wildlife Protection Area
222.14 km² overlap
Izaridake Shuhen
IUCN IbForest Ecosystem Reserve
23.32 km² overlap
Nopporo shinrin kouen
IUCN VPrefectural Natural Park
11.29 km² overlap
Nopporo
IUCN IVPrefectural Wildlife Protection Area
11.26 km² overlap
Shikotsu monbetsudake
IUCN IVPrefectural Wildlife Protection Area
4.25 km² overlap
Maizuru yuusuichi
IUCN IVPrefectural Wildlife Protection Area
2.04 km² overlap
Minaminosato
IUCN VSpecial green space conservation districts
1.83 km² overlap
Shikotsu and Muine
IUCN VGreen Corridor
0.54 km² overlap
15 more protected areassorted by overlap area
Shimamatsu
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
0.53 km² overlap
Minami no sato
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
0.38 km² overlap
Nopporo Katsurato
IUCN IVRare Population Protected Forest
0.25 km² overlap
Rare Population Protected Forest
0.24 km² overlap
Chitose Mizunara Idenshigen
IUCN IVRare Population Protected Forest
0.17 km² overlap
Nishi no sato
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
0.16 km² overlap
Rare Population Protected Forest
0.14 km² overlap
Chitose Shiraneaoi
IUCN IVRare Population Protected Forest
0.13 km² overlap
Tomigaoka
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
0.11 km² overlap
Chitose Harunire Idenshigen
IUCN IVRare Population Protected Forest
0.05 km² overlap
Shimo shimamatsu
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
0.03 km² overlap
Nishi shimamatsu
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
0.03 km² overlap
Hokkaido Kikkoman Forest Area
IUCN Not ApplicableOECM
0.03 km² overlap
Houei jinja
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
0.01 km² overlap
Shimamatsu jinja
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
1 519 distinct species · 13 120 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 千歳川 : 27 espèces reliées par 58 interactions GloBI sur 5 types (connectance 9.2%, filtre Serrano α=0.2). 9 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°
6,7°C
Annual rain
1 174mm
Moisture idx (CMI)
0,38
Runoff
962mm/an
PET
723mm
AET
664mm
Mean slope
4,5°
Water table
152cm
Forest
65%
Crops
14%
Urban
12%
Protected
22%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)