HydroBASINS lev08 watershed · #4080600510
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 9 administrative regions : Hayakawa, Hokuto, Ina, Kajikazawa, Masuho +4
Sub-basin area
507,4km²
Upstream area
507,4km²
Discharge
17,86m³/s
Mean elev.
1 474m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
9 dept-equivalent regions (GADM L2)
- 359.4 km²70.8% of basin
- Minami-AlpsYamanashi · Japan104.4 km²20.6% of basin
- 17.1 km²3.4% of basin
- 10.1 km²2.0% of basin
- 9.8 km²1.9% of basin
- 2.7 km²0.5% of basin
- HokutoYamanashi · Japan2.6 km²0.5% of basin
- 0.9 km²0.2% of basin
1 moreFull L2 list
- Kajikazawa0.5 km² · 0.1%
18 intersecting protected areas
Minami alps
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
276.07 km² overlap
Hakuho
IUCN IVPrefectural Wildlife Protection Area
161.00 km² overlap
Minami alps
IUCN IINational Park
131.55 km² overlap
Minami alps koma
IUCN VPrefectural Natural Park
40.61 km² overlap
Zaruga take
IUCN VPrefectural Nature Conservation Area
5.93 km² overlap
Zarugatake
IUCN IVPrefectural Wildlife Protection Area
5.88 km² overlap
Shichimen san
IUCN VPrefectural Nature Conservation Area
2.57 km² overlap
Ikawa mountains and forest
IUCN Not ApplicableOECM
1.04 km² overlap
Minobusan
IUCN IVPrefectural Wildlife Protection Area
0.98 km² overlap
9 more protected areassorted by overlap area
Minami-Alps
IUCN IVPrefectural Wildlife Protection Area
0.94 km² overlap
Kaikoma
IUCN IVPrefectural Wildlife Protection Area
0.87 km² overlap
Tsuzuragochi
IUCN IVPrefectural Wildlife Protection Area
0.70 km² overlap
Amahatako
IUCN IVPrefectural Wildlife Protection Area
0.54 km² overlap
Mitsuminegawa joryu
IUCN IVPrefectural Wildlife Protection Area
0.13 km² overlap
Minamiarupusu（Shiomito）
IUCN IVBiocenosis Protected Forest
0.11 km² overlap
Okuoi
IUCN VPrefectural Natural Park
0.11 km² overlap
Minamiarupusu（Senjogataketo）
IUCN IVBiocenosis Protected Forest
0.07 km² overlap
Ikawako
IUCN IVPrefectural Wildlife Protection Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 691 distinct species · 6 645 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 : 23 espèces reliées par 36 interactions GloBI sur 5 types (connectance 7.3%, filtre Serrano α=0.2). 9 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°
6,8°C
Annual rain
2 007mm
Moisture idx (CMI)
0,57
Runoff
1 085mm/an
PET
819mm
AET
818mm
Mean slope
28,8°
Water table
911cm
Forest
86%
Crops
8%
Urban
0%
Protected
40%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)