HydroBASINS lev08 watershed · #4080043230
Bassin de 阿賀野川
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 1 administrative regions : Niigata
Sub-basin area
13,6km²
Upstream area
7 802,1km²
Discharge
247,84m³/s
Mean elev.
-1m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de 阿賀野川863 km²
- Bassin de 塚田川277 km²
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
51 distinct species · 119 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 阿賀野川 : 22 espèces reliées par 26 interactions GloBI sur 3 types (connectance 8.7%, filtre Serrano α=0.2). 3 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°
13,4°C
Annual rain
1 872mm
Moisture idx (CMI)
0,51
Runoff
1 211mm/an
PET
919mm
AET
888mm
Mean slope
0,2°
Water table
1cm
Forest
0%
Crops
23%
Urban
98%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)