HydroBASINS lev08 watershed · #4080044980
Bassin de 早川
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 22 administrative regions : Atami, Gotemba, Hakone, Higashiizu, Itō +17
Sub-basin area
1 168,1km²
Upstream area
1 168,1km²
Discharge
0,17m³/s
Mean elev.
336m
Administrative coverage
22 dept-equivalent regions (GADM L2)
- 128.0 km²11.0% of basin
- 113.4 km²9.7% of basin
- 109.1 km²9.3% of basin
- 105.7 km²9.1% of basin
- 100.7 km²8.6% of basin
- 90.2 km²7.7% of basin
- 85.7 km²7.3% of basin
- 80.3 km²6.9% of basin
14 moreFull L2 list
- Higashiizu76.7 km² · 6.6%
- Atami60.8 km² · 5.2%
- Izu56.7 km² · 4.9%
- Yugawara42.4 km² · 3.6%
- Odawara41.8 km² · 3.6%
- Manazuru7.8 km² · 0.7%
- Gotemba2.1 km² · 0.2%
- Izunokuni1.2 km² · 0.1%
- Minamiashigara1.2 km² · 0.1%
- Susono1.1 km² · 0.1%
- Oyama1.1 km² · 0.1%
- Kannami0.4 km² · 0.0%
- Mishima0.2 km² · 0.0%
- Shimizu0.2 km² · 0.0%
30 intersecting protected areas
Fuji hakone izu
IUCN VNational Park
331.54 km² overlap
Hakone
IUCN IVPrefectural Wildlife Protection Area
97.94 km² overlap
Common fishery right area
56.28 km² overlap
Amagi
IUCN IVPrefectural Wildlife Protection Area
25.63 km² overlap
Okuyugawara
IUCN VPrefectural Natural Park
19.35 km² overlap
Itoshi omuro kogen
IUCN IVPrefectural Wildlife Protection Area
6.04 km² overlap
Common fishery right area
5.98 km² overlap
Kawana
IUCN IVPrefectural Wildlife Protection Area
5.60 km² overlap
Shimoda
IUCN IVPrefectural Wildlife Protection Area
5.01 km² overlap
21 more protected areassorted by overlap area
Shikagaya
IUCN IVPrefectural Wildlife Protection Area
4.55 km² overlap
Kanukiyama
IUCN IVPrefectural Wildlife Protection Area
4.20 km² overlap
Yoshihama
IUCN VPrefectural Nature Conservation Area
3.82 km² overlap
Hatchoike・Kawakodaira
IUCN IVBiocenosis Protected Forest
3.81 km² overlap
Kataura-hayakawa
IUCN VPrefectural Nature Conservation Area
3.42 km² overlap
Himenosawa
IUCN IVPrefectural Wildlife Protection Area
2.92 km² overlap
Amagikogen
IUCN IVPrefectural Wildlife Protection Area
2.39 km² overlap
Reiyukaishuhen
IUCN IVPrefectural Wildlife Protection Area
1.94 km² overlap
Inatorisizenkoen
IUCN IVPrefectural Wildlife Protection Area
1.70 km² overlap
Nashimoto
IUCN IVPrefectural Wildlife Protection Area
1.65 km² overlap
Hakone
IUCN IVPrefectural Wildlife Protection Area
1.55 km² overlap
Hakone Himeshara・Xxx
IUCN IVRare Population Protected Forest
1.50 km² overlap
Manazuru hanto
IUCN VPrefectural Natural Park
1.31 km² overlap
Manazuru
IUCN VPrefectural Nature Conservation Area
1.24 km² overlap
Prefectural Nature Conservation Area
1.23 km² overlap
Manazuru hanto
IUCN IVPrefectural Wildlife Protection Area
1.14 km² overlap
Makuyama koen
IUCN IVPrefectural Wildlife Protection Area
1.08 km² overlap
Kuno
IUCN VPrefectural Nature Conservation Area
0.96 km² overlap
Hoshigayama koen
IUCN IVPrefectural Wildlife Protection Area
0.81 km² overlap
Kamo chugakko
IUCN IVPrefectural Wildlife Protection Area
0.74 km² overlap
Shiroyama koen
IUCN IVPrefectural Wildlife Protection Area
0.62 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 810 distinct species · 84 375 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 早川 : 29 espèces reliées par 50 interactions GloBI sur 2 types (connectance 8.9%, filtre Serrano α=0.2). 5 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°
14,3°C
Annual rain
2 135mm
Moisture idx (CMI)
0,57
Runoff
1 169mm/an
PET
909mm
AET
909mm
Mean slope
14,2°
Water table
423cm
Forest
85%
Crops
6%
Urban
14%
Protected
34%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)