HydroBASINS lev08 watershed · #4080041720
Bassin de 庄内川
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 2 administrative regions : Akaiwa, Okayama
Sub-basin area
75,3km²
Upstream area
75,4km²
Discharge
1,58m³/s
Mean elev.
19m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 71.4 km²94.9% of basin
- 0.1 km²0.2% of basin
3 intersecting protected areas
Common fishery right area
1.15 km² overlap
Setonaikai
IUCN VNational Park
0.08 km² overlap
Santoku
IUCN IVPrefectural Wildlife Protection Area
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
389 distinct species · 9 033 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 庄内川 : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 53 interactions GloBI sur 4 types (connectance 7.5%, filtre Serrano α=0.2). 8 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°
15,4°C
Annual rain
1 238mm
Moisture idx (CMI)
0,13
Runoff
671mm/an
PET
1 078mm
AET
1 032mm
Mean slope
2,9°
Water table
136cm
Forest
7%
Crops
12%
Urban
93%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)