HydroBASINS lev08 watershed · #4080041080
Bassin de 海部川
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 11 administrative regions : Anan, Kaiyō, Kitagawa, Minami, Mugi +6
Sub-basin area
1 018,8km²
Upstream area
1 018,8km²
Discharge
15,31m³/s
Mean elev.
253m
Administrative coverage
11 dept-equivalent regions (GADM L2)
19 intersecting protected areas
Muroto-Anankaigan
IUCN VQuasi National Park
118.02 km² overlap
Common fishery right area
46.68 km² overlap
Common fishery right area
19.56 km² overlap
Todoroki
IUCN IVPrefectural Wildlife Protection Area
8.45 km² overlap
Chubusankei
IUCN VPrefectural Natural Park
7.35 km² overlap
Muroto misaki
IUCN IVPrefectural Wildlife Protection Area
6.46 km² overlap
Tomooku
IUCN IVPrefectural Wildlife Protection Area
6.15 km² overlap
Ishima
IUCN IVPrefectural Wildlife Protection Area
3.03 km² overlap
Tachibana
IUCN IVPrefectural Wildlife Protection Area
1.98 km² overlap
10 more protected areassorted by overlap area
Fukuidamko
IUCN IVPrefectural Wildlife Protection Area
1.90 km² overlap
Sakiyama
IUCN IVPrefectural Wildlife Protection Area
1.82 km² overlap
Mugioshima
IUCN IVPrefectural Wildlife Protection Area
1.77 km² overlap
Minamiawa sun line
IUCN IVPrefectural Wildlife Protection Area
1.51 km² overlap
Yanase
IUCN VPrefectural Natural Park
0.73 km² overlap
National Natural Monument
0.53 km² overlap
Yakuoji
IUCN IVPrefectural Wildlife Protection Area
0.46 km² overlap
Tsunomine
IUCN IVPrefectural Wildlife Protection Area
0.40 km² overlap
Moto-iwato-Narashi kaigan
IUCN IVUmigame Habitat Protection Area(Kochi)
0.09 km² overlap
Hiwasaohama
IUCN IVPrefectural Wildlife Protection Area
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 169 distinct species · 11 454 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 8 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 海部川 : 6 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 8 interactions GloBI sur 2 types (connectance 22.2%, filtre Serrano α=0.2). 3 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°
15,4°C
Annual rain
2 214mm
Moisture idx (CMI)
0,59
Runoff
1 639mm/an
PET
907mm
AET
907mm
Mean slope
16,5°
Water table
478cm
Forest
85%
Crops
5%
Urban
3%
Protected
13%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)