HydroBASINS lev08 watershed · #4080571460
Bassin de 高瀬川
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 10 administrative regions : Azumino, Hakuba, Ikeda, Kitaazumi, Kurobe +5
Sub-basin area
444,2km²
Upstream area
444,4km²
Discharge
18,35m³/s
Mean elev.
1 504m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
10 dept-equivalent regions (GADM L2)
- 392.2 km²88.3% of basin
- IkedaNagano · Japan18.0 km²4.0% of basin
- 9.1 km²2.0% of basin
- 8.7 km²1.9% of basin
- TateyamaToyama · Japan5.0 km²1.1% of basin
- 4.8 km²1.1% of basin
- 4.2 km²0.9% of basin
- 1.8 km²0.4% of basin
2 moreFull L2 list
- Takayama0.5 km² · 0.1%
- Matsumoto0.0 km² · 0.0%
17 intersecting protected areas
Chubusangaku
IUCN IINational Park
239.11 km² overlap
Kita alps
IUCN IVNational Wildlife Protection Area
231.71 km² overlap
Forest Ecosystem Reserve
35.82 km² overlap
Biocenosis Protected Forest
31.92 km² overlap
Washibadake・Io・Takasekeikoku
IUCN IVBiocenosis Protected Forest
25.45 km² overlap
Kita alps hokubu
IUCN IVPrefectural Wildlife Protection Area
11.29 km² overlap
Takasegawa River Biodiversity Site
IUCN Not ApplicableOECM
3.42 km² overlap
Kizakiko
IUCN IVPrefectural Wildlife Protection Area
1.34 km² overlap
Tokiwa
IUCN IVPrefectural Wildlife Protection Area
1.20 km² overlap
8 more protected areassorted by overlap area
Biocenosis Protected Forest
0.67 km² overlap
Rare Population Protected Forest
0.64 km² overlap
Kamikouchi
IUCN IIINational Natural Monument
0.52 km² overlap
Omine-Kogen Biodiversity Conservation Area (Around Omine Birch Forest and Nanairo-Okaede)
IUCN Not ApplicableOECM
0.25 km² overlap
Kanakido
IUCN IVPrefectural Wildlife Protection Area
0.17 km² overlap
Kashima Hinoki To Idenshigen
IUCN IVRare Population Protected Forest
0.11 km² overlap
Nishina shimmeiguu
IUCN VLocal Environment Conservation Area(Nagano)
0.08 km² overlap
Karakemi shitsugen
IUCN VPrefectural Nature Conservation Area
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 741 distinct species · 9 786 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 高瀬川 : 23 espèces reliées par 26 interactions GloBI sur 4 types (connectance 6.9%, 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°
5,6°C
Annual rain
1 743mm
Moisture idx (CMI)
0,51
Runoff
1 335mm/an
PET
782mm
AET
765mm
Mean slope
22,6°
Water table
711cm
Forest
42%
Crops
34%
Urban
9%
Protected
60%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)