HydroBASINS lev08 watershed · #4080039500
Bassin de 川内川
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 17 administrative regions : Aira, Akune, Asagiri, Ebino, Hishikari +12
Sub-basin area
1 561km²
Upstream area
1 561km²
Discharge
74,21m³/s
Mean elev.
300m
Administrative coverage
17 dept-equivalent regions (GADM L2)
- SatsumasendaiKagoshima · Japan461.8 km²29.6% of basin
- 291.7 km²18.7% of basin
- 286.3 km²18.4% of basin
- 253.4 km²16.2% of basin
- 109.0 km²7.0% of basin
- 89.6 km²5.7% of basin
- 20.2 km²1.3% of basin
- 8.9 km²0.6% of basin
29 intersecting protected areas
Sendai gawa ryuiki
IUCN VPrefectural Natural Park
55.64 km² overlap
Kirishima kinkowan
IUCN IINational Park
35.24 km² overlap
Imuta ike
IUCN VPrefectural Natural Park
32.00 km² overlap
Okuchitsuruda
IUCN IVPrefectural Wildlife Protection Area
22.28 km² overlap
Kirishimayama
IUCN IVBiocenosis Protected Forest
9.38 km² overlap
Okujisso
IUCN IVPrefectural Wildlife Protection Area
7.70 km² overlap
Shiragadake
IUCN IVPrefectural Wildlife Protection Area
7.38 km² overlap
Kirishima
IUCN IVNational Wildlife Protection Area
6.93 km² overlap
Yatake kogen
IUCN VPrefectural Natural Park
5.87 km² overlap
20 more protected areassorted by overlap area
Terayama
IUCN IVPrefectural Wildlife Protection Area
3.40 km² overlap
Kyomachi
IUCN IVPrefectural Wildlife Protection Area
2.95 km² overlap
Shiragadake
IUCN IVBiocenosis Protected Forest
2.24 km² overlap
Coca-Cola Bottlers Japan Water Source Forest Ebino
IUCN Not ApplicableOECM
2.03 km² overlap
Chugoike shuhen
IUCN IVPrefectural Wildlife Protection Area
1.29 km² overlap
Tadamoto
IUCN IVPrefectural Wildlife Protection Area
1.19 km² overlap
Kurinodake
IUCN IVPrefectural Wildlife Protection Area
0.98 km² overlap
Takinoyama
IUCN IVPrefectural Wildlife Protection Area
0.91 km² overlap
Shiraga dake
IUCN IbNature Conservation Area
0.90 km² overlap
Rare Population Protected Forest
0.82 km² overlap
Imuta-ike
IUCN Not ReportedWetland of International Importance (Ramsar Site)
0.61 km² overlap
Maruyama koen
IUCN IVPrefectural Wildlife Protection Area
0.57 km² overlap
Nittajinja
IUCN IVPrefectural Wildlife Protection Area
0.31 km² overlap
Sogi shogakko
IUCN IVPrefectural Wildlife Protection Area
0.28 km² overlap
Hishikari shogakko
IUCN IVPrefectural Wildlife Protection Area
0.18 km² overlap
Shibisan Buna To Idenshigen
IUCN IVRare Population Protected Forest
0.15 km² overlap
Shiroyama koen
IUCN IVPrefectural Wildlife Protection Area
0.12 km² overlap
Kiyoura dam
IUCN IVPrefectural Wildlife Protection Area
0.10 km² overlap
Rare Population Protected Forest
0.06 km² overlap
Hiyamizu Xxx To
IUCN IVRare Population Protected Forest
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 471 distinct species · 16 249 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 24 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 川内川 : 19 espèces reliées par 32 interactions GloBI sur 2 types (connectance 9.8%, filtre Serrano α=0.2). 7 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°
15,1°C
Annual rain
2 580mm
Moisture idx (CMI)
0,58
Runoff
1 492mm/an
PET
1 065mm
AET
1 065mm
Mean slope
9,3°
Water table
285cm
Forest
81%
Crops
11%
Urban
6%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)