HydroBASINS lev08 watershed · #4080040790
Bassin de 森川
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 7 administrative regions : Iyo, Masaki, Matsuyama, Suō-Ōshima, Tobe +2
Sub-basin area
164,8km²
Upstream area
164,8km²
Discharge
4,16m³/s
Mean elev.
208m
Administrative coverage
7 dept-equivalent regions (GADM L2)
- 118.7 km²72.1% of basin
- 16.4 km²10.0% of basin
- 13.1 km²7.9% of basin
- 2.8 km²1.7% of basin
- 1.4 km²0.9% of basin
- Suō-ŌshimaYamaguchi · Japan0.5 km²0.3% of basin
- 0.0 km²0.0% of basin
9 intersecting protected areas
Common fishery right area
11.28 km² overlap
Saragamine renpo
IUCN VPrefectural Natural Park
5.39 km² overlap
Tagamisan
IUCN IVPrefectural Wildlife Protection Area
4.27 km² overlap
Setonaikai
IUCN VNational Park
2.26 km² overlap
Saredani
IUCN IVPrefectural Wildlife Protection Area
1.82 km² overlap
Kutsunashichito kaiiki
IUCN IVPrefectural Wildlife Protection Area
1.31 km² overlap
PREFECTURAL FOREST IN EHIME PREFECTURE
IUCN Not ApplicableOECM
0.33 km² overlap
Kounokawa kaigan
IUCN VNatural Coastal Protected Zone
0.02 km² overlap
Nadamachi kaigan
IUCN VNatural Coastal Protected Zone
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
336 distinct species · 2 499 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 21 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 森川 : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 36 interactions GloBI sur 2 types (connectance 14.2%, filtre Serrano α=0.2). 8 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°
14,9°C
Annual rain
1 610mm
Moisture idx (CMI)
0,36
Runoff
814mm/an
PET
1 015mm
AET
1 006mm
Mean slope
12,6°
Water table
407cm
Forest
57%
Crops
6%
Urban
24%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)