HydroBASINS lev08 watershed · #4080041730
Bassin de 旭川
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 15 administrative regions : Akaiwa, Hino, Kagamino, Kibichūō, Kumenan +10
Sub-basin area
1 625,2km²
Upstream area
1 625,2km²
Discharge
36,7m³/s
Mean elev.
404m
Administrative coverage
15 dept-equivalent regions (GADM L2)
- 819.6 km²50.4% of basin
- 253.4 km²15.6% of basin
- 199.9 km²12.3% of basin
- 98.8 km²6.1% of basin
- 69.4 km²4.3% of basin
- 69.4 km²4.3% of basin
- 68.5 km²4.2% of basin
- 17.2 km²1.1% of basin
30 intersecting protected areas
Yubara okutsu
IUCN VPrefectural Natural Park
81.13 km² overlap
Daisen oki
IUCN VNational Park
59.32 km² overlap
Kibi Seiryu
IUCN VPrefectural Natural Park
44.33 km² overlap
Hiruzen kokuritsu koen
IUCN IVPrefectural Wildlife Protection Area
15.81 km² overlap
Araregasen
IUCN IVPrefectural Wildlife Protection Area
9.05 km² overlap
Bisaku sanchi
IUCN VPrefectural Natural Park
8.75 km² overlap
Kenashiyama
IUCN IVPrefectural Wildlife Protection Area
8.72 km² overlap
Asahigawako
IUCN IVPrefectural Wildlife Protection Area
6.63 km² overlap
Takebeno mori
IUCN IVPrefectural Wildlife Protection Area
6.16 km² overlap
21 more protected areassorted by overlap area
Kibi kogen
IUCN IVPrefectural Wildlife Protection Area
5.71 km² overlap
Kaneyama
IUCN IVPrefectural Wildlife Protection Area
5.58 km² overlap
Takahashi gawa Joryu
IUCN VPrefectural Natural Park
5.27 km² overlap
Hitsugasen
IUCN IVPrefectural Wildlife Protection Area
4.38 km² overlap
Kiyama
IUCN IVPrefectural Wildlife Protection Area
4.06 km² overlap
Ukankei
IUCN IVPrefectural Wildlife Protection Area
3.91 km² overlap
Yubarako
IUCN IVPrefectural Wildlife Protection Area
3.87 km² overlap
Iinoyama
IUCN IVPrefectural Wildlife Protection Area
2.78 km² overlap
Tominishidani
IUCN IVPrefectural Wildlife Protection Area
1.30 km² overlap
Nichioji
IUCN IVPrefectural Wildlife Protection Area
1.05 km² overlap
Kanbano taki shizen koen
IUCN IVPrefectural Wildlife Protection Area
0.55 km² overlap
Katsuyama utsukushii mori
IUCN IVPrefectural Wildlife Protection Area
0.51 km² overlap
Genjuji
IUCN IVPrefectural Wildlife Protection Area
0.41 km² overlap
Shiotaki
IUCN VPrefectural Nature Conservation Area
0.30 km² overlap
Kegi
IUCN VLocal Nature Protection Area(Okayama)
0.22 km² overlap
Kiyama
IUCN VLocal Nature Protection Area(Okayama)
0.22 km² overlap
Mikiyama
IUCN VLocal Nature Protection Area(Okayama)
0.19 km² overlap
Rare Population Protected Forest
0.18 km² overlap
Tatsunokuchiyama Arakashi
IUCN IVRare Population Protected Forest
0.17 km² overlap
Tempukuji
IUCN VLocal Nature Protection Area(Okayama)
0.16 km² overlap
Ryousanji
IUCN VLocal Nature Protection Area(Okayama)
0.16 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 401 distinct species · 28 132 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 旭川 : 30 espèces reliées par 45 interactions GloBI sur 4 types (connectance 7.1%, filtre Serrano α=0.2). 6 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°
12,4°C
Annual rain
1 621mm
Moisture idx (CMI)
0,37
Runoff
840mm/an
PET
997mm
AET
990mm
Mean slope
11,9°
Water table
408cm
Forest
91%
Crops
4%
Urban
7%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)