HydroBASINS lev08 watershed · #4080040620
Bassin de 天降川
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 8 administrative regions : Aira, Ebino, Kirishima, Kobayashi, Miyakonojō +3
Sub-basin area
424,5km²
Upstream area
424,7km²
Discharge
20,08m³/s
Mean elev.
368m
Administrative coverage
8 dept-equivalent regions (GADM L2)
- 384.5 km²90.6% of basin
- 30.2 km²7.1% of basin
- 3.5 km²0.8% of basin
- 2.5 km²0.6% of basin
- 2.1 km²0.5% of basin
- MiyakonojōMiyazaki · Japan0.9 km²0.2% of basin
- 0.1 km²0.0% of basin
- 0.1 km²0.0% of basin
14 intersecting protected areas
Kirishima kinkowan
IUCN IINational Park
70.74 km² overlap
Kirishima
IUCN IVNational Wildlife Protection Area
49.97 km² overlap
Kirishimayama
IUCN IVBiocenosis Protected Forest
20.97 km² overlap
Kirishima
IUCN IVPrefectural Wildlife Protection Area
13.67 km² overlap
Maruo
IUCN IVPrefectural Wildlife Protection Area
9.92 km² overlap
Maruoka koen
IUCN IVPrefectural Wildlife Protection Area
1.89 km² overlap
Kokubu shiroyama
IUCN IVPrefectural Wildlife Protection Area
1.43 km² overlap
Amorigawa
IUCN IVPrefectural Wildlife Protection Area
1.08 km² overlap
Uwatoko
IUCN IVPrefectural Wildlife Protection Area
0.60 km² overlap
5 more protected areassorted by overlap area
Miyauchi shogakko
IUCN IVPrefectural Wildlife Protection Area
0.22 km² overlap
Okawarakyo
IUCN IVPrefectural Wildlife Protection Area
0.16 km² overlap
Kagoshimaken kenminno mori
IUCN IVPrefectural Wildlife Protection Area
0.05 km² overlap
Common fishery right area
0.03 km² overlap
Mizobe shochugakko
IUCN IVPrefectural Wildlife Protection Area
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
941 distinct species · 3 530 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 天降川 : 22 espèces reliées par 41 interactions GloBI sur 3 types (connectance 9.4%, 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°
15,0°C
Annual rain
2 686mm
Moisture idx (CMI)
0,59
Runoff
1 539mm/an
PET
1 078mm
AET
1 078mm
Mean slope
8,1°
Water table
190cm
Forest
90%
Crops
4%
Urban
10%
Protected
22%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)