HydroBASINS lev08 watershed · #4080571810
Bassin de 中房川
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 5 administrative regions : Azumino, Ikeda, Kitaazumi, Matsumoto, Ōmachi
Sub-basin area
368,6km²
Upstream area
368,6km²
Discharge
15,09m³/s
Mean elev.
1 178m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 233.4 km²63.3% of basin
- 70.1 km²19.0% of basin
- 41.9 km²11.4% of basin
- 23.3 km²6.3% of basin
- IkedaNagano · Japan0.0 km²0.0% of basin
8 intersecting protected areas
Chubusangaku
IUCN IINational Park
91.95 km² overlap
Kita alps
IUCN IVNational Wildlife Protection Area
26.71 km² overlap
Biocenosis Protected Forest
15.27 km² overlap
Baro
IUCN IVPrefectural Wildlife Protection Area
9.41 km² overlap
Tokiwa
IUCN IVPrefectural Wildlife Protection Area
4.98 km² overlap
Kamikouchi
IUCN IIINational Natural Monument
1.12 km² overlap
Manganji
IUCN VLocal Environment Conservation Area(Nagano)
0.11 km² overlap
Forest Ecosystem Reserve
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 838 distinct species · 14 126 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 中房川 : 23 espèces reliées par 52 interactions GloBI sur 3 types (connectance 10.5%, 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°
7,8°C
Annual rain
1 528mm
Moisture idx (CMI)
0,37
Runoff
1 287mm/an
PET
886mm
AET
842mm
Mean slope
17,3°
Water table
493cm
Forest
57%
Crops
18%
Urban
16%
Protected
36%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)