HydroBASINS lev08 watershed · #4080449720
Bassin de 小猿部川
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 : Fujisato, Hirosaki, Kitaakita, Nishimeya, Ōdate +1
Sub-basin area
739,4km²
Upstream area
2 367,8km²
Discharge
72,29m³/s
Mean elev.
261m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de 犀川292 km²
- Bassin de 長木川251 km²
6 dept-equivalent regions (GADM L2)
- 399.6 km²54.0% of basin
- 321.2 km²43.4% of basin
- 15.5 km²2.1% of basin
- 2.1 km²0.3% of basin
- 1.3 km²0.2% of basin
- 0.5 km²0.1% of basin
21 intersecting protected areas
Shirakami Hakkoda
IUCN VGreen Corridor
38.55 km² overlap
Tashiro dake
IUCN VPrefectural Natural Park
18.65 km² overlap
Tashirodake
IUCN IVPrefectural Wildlife Protection Area
12.93 km² overlap
Uchimachisawa
IUCN IVPrefectural Wildlife Protection Area
9.12 km² overlap
Hayaguchi
IUCN IVPrefectural Wildlife Protection Area
3.61 km² overlap
Kamikamosawa
IUCN IVPrefectural Wildlife Protection Area
3.56 km² overlap
Jinbatai
IUCN IVPrefectural Wildlife Protection Area
3.41 km² overlap
Akagawa
IUCN IVPrefectural Wildlife Protection Area
3.26 km² overlap
Yagihashi
IUCN IVPrefectural Wildlife Protection Area
3.24 km² overlap
12 more protected areassorted by overlap area
Tanaka
IUCN IVPrefectural Wildlife Protection Area
2.53 km² overlap
Nagasakayama
IUCN IVPrefectural Wildlife Protection Area
2.12 km² overlap
Misaka
IUCN IVPrefectural Wildlife Protection Area
1.98 km² overlap
Mato
IUCN IVPrefectural Wildlife Protection Area
1.46 km² overlap
Hinai maeda
IUCN IVPrefectural Wildlife Protection Area
1.42 km² overlap
Nihonsugi iwaya
IUCN IVPrefectural Wildlife Protection Area
1.25 km² overlap
Urashinai
IUCN IVPrefectural Wildlife Protection Area
0.19 km² overlap
Prefectural Natural Park
0.17 km² overlap
Kurayama fuketsu
IUCN VPrefectural Nature Conservation Area
0.07 km² overlap
Kimimachi zaka
IUCN VPrefectural Natural Park
0.02 km² overlap
Kimimachi zaka
IUCN IVPrefectural Wildlife Protection Area
0.02 km² overlap
Hakamakoshiyama
IUCN IVPrefectural Wildlife Protection Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 662 distinct species · 6 070 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 小猿部川 : 22 espèces reliées par 45 interactions GloBI sur 4 types (connectance 9.7%, 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°
9,5°C
Annual rain
1 503mm
Moisture idx (CMI)
0,45
Runoff
1 049mm/an
PET
825mm
AET
786mm
Mean slope
11,1°
Water table
359cm
Forest
88%
Crops
4%
Urban
3%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)