HydroBASINS lev08 watershed · #4080037930
Bassin de 常呂川
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 13 administrative regions : Abashiri, Ashoro, Bihoro, Engaru, Kamikawa +8
Sub-basin area
1 942,4km²
Upstream area
1 942,4km²
Discharge
32,68m³/s
Mean elev.
397m
Administrative coverage
13 dept-equivalent regions (GADM L2)
- 1195.0 km²61.4% of basin
- 501.6 km²25.8% of basin
- 172.6 km²8.9% of basin
- 19.9 km²1.0% of basin
- 15.1 km²0.8% of basin
- 12.2 km²0.6% of basin
- 9.4 km²0.5% of basin
- 8.5 km²0.4% of basin
23 intersecting protected areas
Oketo katsuyama
IUCN IVAcademic Nature Protection Area(Hokkaido)
4.95 km² overlap
Kanokozawa
IUCN IVPrefectural Wildlife Protection Area
4.30 km² overlap
Wakamatsu
IUCN IVPrefectural Wildlife Protection Area
3.41 km² overlap
Ohotsukuno mori
IUCN IVPrefectural Wildlife Protection Area
3.01 km² overlap
Kitami misono
IUCN IVPrefectural Wildlife Protection Area
2.68 km² overlap
Daisetsuzan
IUCN IINational Park
1.52 km² overlap
Takinoyu
IUCN IVPrefectural Wildlife Protection Area
1.29 km² overlap
Honzawa
IUCN IVPrefectural Wildlife Protection Area
0.90 km² overlap
Midorigaoka
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
0.58 km² overlap
14 more protected areassorted by overlap area
Muri
IUCN IVPrefectural Wildlife Protection Area
0.21 km² overlap
Minamigaoka kouen
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
0.20 km² overlap
Kyosei
IUCN IVPrefectural Wildlife Protection Area
0.17 km² overlap
Oketo Akaezomatsu
IUCN IVRare Population Protected Forest
0.13 km² overlap
Rare Population Protected Forest
0.12 km² overlap
Rare Population Protected Forest
0.07 km² overlap
Rare Population Protected Forest
0.07 km² overlap
Asahi Ezomatsu Idenshigen
IUCN IVRare Population Protected Forest
0.07 km² overlap
Abashiri Harunire Idenshigen
IUCN IVRare Population Protected Forest
0.07 km² overlap
Rare Population Protected Forest
0.06 km² overlap
Common fishery right area
0.04 km² overlap
Abashiri
IUCN VICoastline Marine Resource Development Area, designated sea area
0.03 km² overlap
Rare Population Protected Forest
0.02 km² overlap
Kunneppu 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
2 682 distinct species · 19 805 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 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 常呂川 : 10 espèces reliées par 59 interactions GloBI sur 6 types (connectance 19.7%, filtre Serrano α=0.2). 15 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°
4,6°C
Annual rain
1 060mm
Moisture idx (CMI)
0,33
Runoff
557mm/an
PET
677mm
AET
621mm
Mean slope
9,7°
Water table
282cm
Forest
64%
Crops
18%
Urban
3%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)