HydroBASINS lev08 watershed · #4080045890
Bassin de 鴨川
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 : Hachijō, Ogasawara
Sub-basin area
276km²
Upstream area
276km²
Discharge
2,96m³/s
Mean elev.
106m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 81.1 km²29.4% of basin
- 61.1 km²22.2% of basin
14 intersecting protected areas
Ogasawara
IUCN IINational Park
128.60 km² overlap
Ogasawara gunto
IUCN IVNational Wildlife Protection Area
95.72 km² overlap
Common fishery right area
86.58 km² overlap
Fuji hakone izu
IUCN VNational Park
81.53 km² overlap
Ogasawara Islands
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
68.45 km² overlap
Ogasawarashoto
IUCN IbForest Ecosystem Reserve
57.47 km² overlap
Kitaiojima
IUCN IVNational Wildlife Protection Area
8.08 km² overlap
Hachijo miharayama
IUCN IVPrefectural Wildlife Protection Area
5.68 km² overlap
Hachijo kojima
IUCN IVPrefectural Wildlife Protection Area
5.65 km² overlap
5 more protected areassorted by overlap area
Hachijo fuji
IUCN IVPrefectural Wildlife Protection Area
4.95 km² overlap
Torishima
IUCN IVNational Wildlife Protection Area
4.76 km² overlap
Minami io jima
IUCN IaWilderness Area
3.44 km² overlap
Koiwadogahana
IUCN IVPrefectural Wildlife Protection Area
2.44 km² overlap
Nishinoshima
IUCN IVNational Wildlife Protection Area
0.29 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 057 distinct species · 5 716 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 鴨川 : 23 espèces reliées par 16 interactions GloBI sur 3 types (connectance 5.8%, filtre Serrano α=0.2). 1 bulle taxonomique (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°
21,1°C
Annual rain
1 974mm
Moisture idx (CMI)
0,44
Runoff
1 166mm/an
PET
935mm
AET
919mm
Mean slope
10,4°
Water table
416cm
Forest
21%
Crops
42%
Urban
2%
Protected
82%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)