HydroBASINS lev08 watershed · #4080482320
Bassin de 胆沢川
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 5 administrative regions : Higashinaruse, Kanegasaki, Kitakami, Nishiwaga, Ōshū
Sub-basin area
359,8km²
Upstream area
359,8km²
Discharge
11,95m³/s
Mean elev.
504m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 217.1 km²60.3% of basin
- KanegasakiIwate · Japan135.0 km²37.5% of basin
- HigashinaruseAkita · Japan5.8 km²1.6% of basin
- 1.4 km²0.4% of basin
- 0.7 km²0.2% of basin
10 intersecting protected areas
Kurikoma
IUCN IIQuasi National Park
69.36 km² overlap
Tochigamori
IUCN IVPrefectural Wildlife Protection Area
54.32 km² overlap
Forest Ecosystem Reserve
52.59 km² overlap
Yakeishidake
IUCN IVBiocenosis Protected Forest
50.50 km² overlap
Yakeishi renpo
IUCN IVPrefectural Wildlife Protection Area
35.53 km² overlap
Isawa dam
IUCN IVPrefectural Wildlife Protection Area
6.16 km² overlap
Tadenuma Hoonoki Idenshigen
IUCN IVRare Population Protected Forest
0.31 km² overlap
Ouu Mountain Range
IUCN VGreen Corridor
0.20 km² overlap
Kurikoma
IUCN IVPrefectural Wildlife Protection Area
0.08 km² overlap
1 more protected areassorted by overlap area
Okamisawa
IUCN IVPrefectural Wildlife Protection Area
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
574 distinct species · 14 174 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 19 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 胆沢川 : 14 espèces reliées par 18 interactions GloBI sur 2 types (connectance 10.5%, filtre Serrano α=0.2). 5 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°
8,3°C
Annual rain
1 509mm
Moisture idx (CMI)
0,45
Runoff
1 036mm/an
PET
825mm
AET
810mm
Mean slope
10,6°
Water table
327cm
Forest
46%
Crops
16%
Urban
1%
Protected
33%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)