HydroBASINS lev08 watershed · #4080040780
Bassin de 肱川
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 : Iyo, Kihoku, Kumakōgen, Seiyo, Tobe +5
Sub-basin area
1 212,1km²
Upstream area
1 212,1km²
Discharge
26,04m³/s
Mean elev.
389m
Administrative coverage
10 dept-equivalent regions (GADM L2)
- 425.2 km²35.1% of basin
- 400.8 km²33.1% of basin
- 254.4 km²21.0% of basin
- 76.0 km²6.3% of basin
- 44.2 km²3.6% of basin
- 3.3 km²0.3% of basin
- 2.8 km²0.2% of basin
- 2.7 km²0.2% of basin
24 intersecting protected areas
Kanogawa dam shuhen
IUCN IVPrefectural Wildlife Protection Area
11.71 km² overlap
Hijikawa
IUCN VPrefectural Natural Park
8.08 km² overlap
Tomisuyama
IUCN IVPrefectural Wildlife Protection Area
4.06 km² overlap
Nomura dam shuhen
IUCN IVPrefectural Wildlife Protection Area
3.82 km² overlap
Odamiyama
IUCN IVPrefectural Wildlife Protection Area
2.65 km² overlap
Fushigoe
IUCN IVPrefectural Wildlife Protection Area
2.44 km² overlap
Shikoku Karst (ehime)
IUCN VPrefectural Natural Park
2.31 km² overlap
Unomachi
IUCN IVPrefectural Wildlife Protection Area
2.07 km² overlap
Kametani
IUCN IVPrefectural Wildlife Protection Area
1.97 km² overlap
15 more protected areassorted by overlap area
Kinzan shussekiji
IUCN IVPrefectural Wildlife Protection Area
1.90 km² overlap
Saredani
IUCN IVPrefectural Wildlife Protection Area
1.75 km² overlap
Saragamine renpo
IUCN VPrefectural Natural Park
1.05 km² overlap
Kawabe
IUCN IVPrefectural Wildlife Protection Area
0.83 km² overlap
Shirataki
IUCN IVPrefectural Wildlife Protection Area
0.59 km² overlap
Nagaki
IUCN IVPrefectural Wildlife Protection Area
0.52 km² overlap
Setonaikai
IUCN VNational Park
0.50 km² overlap
Gozaisho
IUCN IVPrefectural Wildlife Protection Area
0.27 km² overlap
Oyabu
IUCN IVPrefectural Wildlife Protection Area
0.17 km² overlap
Tada
IUCN IVPrefectural Wildlife Protection Area
0.10 km² overlap
Common fishery right area
0.10 km² overlap
Koya yama
IUCN VPrefectural Nature Conservation Area
0.05 km² overlap
Ozushiroyama
IUCN IVPrefectural Wildlife Protection Area
0.04 km² overlap
Odamiyama Buna(Idenshigen)
IUCN IVRare Population Protected Forest
0.02 km² overlap
Shikoku Karst (kochi)
IUCN VPrefectural Natural Park
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 004 distinct species · 6 835 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 肱川 : 24 espèces reliées par 40 interactions GloBI sur 5 types (connectance 8.1%, 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°
14,1°C
Annual rain
1 860mm
Moisture idx (CMI)
0,46
Runoff
904mm/an
PET
983mm
AET
982mm
Mean slope
15,9°
Water table
528cm
Forest
81%
Crops
7%
Urban
5%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)