HydroBASINS lev08 watershed · #4080041440
Bassin de 牛滝川
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 18 administrative regions : Hannan, Iwade, Izumi, Izumisano, Izumiōtsu +13
Sub-basin area
639,6km²
Upstream area
639,6km²
Discharge
1,89m³/s
Mean elev.
117m
Administrative coverage
18 dept-equivalent regions (GADM L2)
- SakaiOsaka · Japan99.8 km²15.6% of basin
- IzumiOsaka · Japan78.4 km²12.3% of basin
- 74.4 km²11.6% of basin
- 54.1 km²8.5% of basin
- 51.5 km²8.1% of basin
- 48.3 km²7.5% of basin
- MisakiOsaka · Japan47.1 km²7.4% of basin
- 42.1 km²6.6% of basin
10 moreFull L2 list
- Hannan39.4 km² · 6.2%
- Kumatori15.8 km² · 2.5%
- Takaishi15.1 km² · 2.4%
- Izumiōtsu12.5 km² · 2.0%
- Kinokawa7.1 km² · 1.1%
- Iwade6.5 km² · 1.0%
- Tadaoka5.2 km² · 0.8%
- Kawachinagano4.8 km² · 0.8%
- Tajiri4.1 km² · 0.6%
- Ōsakasayama0.4 km² · 0.1%
27 intersecting protected areas
Kongo-Ikoma-Kisen
IUCN VQuasi National Park
44.22 km² overlap
Setonaikai
IUCN VNational Park
10.24 km² overlap
Hannan-misaki
IUCN VPrefectural Natural Park
8.23 km² overlap
Common fishery right area
6.06 km² overlap
Common fishery right area
5.68 km² overlap
Tomogashima
IUCN IVPrefectural Wildlife Protection Area
5.68 km² overlap
Inunakisan
IUCN IVPrefectural Wildlife Protection Area
5.14 km² overlap
Katsuragi ushitaki
IUCN IVPrefectural Wildlife Protection Area
5.03 km² overlap
Makiosan
IUCN IVPrefectural Wildlife Protection Area
4.05 km² overlap
18 more protected areassorted by overlap area
Amanosan
IUCN IVPrefectural Wildlife Protection Area
2.87 km² overlap
Kisen kogen
IUCN IVPrefectural Wildlife Protection Area
2.57 km² overlap
Kadananbu
IUCN IVPrefectural Wildlife Protection Area
1.96 km² overlap
Kisen kogen
IUCN IVPrefectural Wildlife Protection Area
1.26 km² overlap
Kinokawa
IUCN IVPrefectural Wildlife Protection Area
0.83 km² overlap
Wakayamashi shinrin koen
IUCN IVPrefectural Wildlife Protection Area
0.80 km² overlap
Izumi katsuragisan bunarin
IUCN IVPrefectural Wildlife Protection Area
0.53 km² overlap
Onosatogawa kako
IUCN IVPrefectural Wildlife Protection Area
0.24 km² overlap
Hachigamineji
IUCN VSpecial green space conservation districts
0.14 km² overlap
Kojima
IUCN VNatural Coastal Protected Zone
0.14 km² overlap
Nagamatsu
IUCN VNatural Coastal Protected Zone
0.09 km² overlap
Takihata
IUCN IVPrefectural Wildlife Protection Area
0.05 km² overlap
Senboku LNG Terminal, Osaka Gas Co., Ltd.
IUCN Not ApplicableOECM
0.04 km² overlap
Tanagawa Biotope
IUCN Not ApplicableOECM
0.02 km² overlap
Koya
IUCN VSpecial green space conservation districts
0.02 km² overlap
Ono jinja
IUCN VSpecial green space conservation districts
0.01 km² overlap
Ogami jinja
IUCN VPrefectural Nature Conservation Area
0.01 km² overlap
Hannan Seven Sea Forest
IUCN Not ApplicableOECM
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 711 distinct species · 45 418 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 牛滝川 : 35 espèces reliées par 38 interactions GloBI sur 2 types (connectance 5.1%, filtre Serrano α=0.2). 4 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°
15,1°C
Annual rain
1 636mm
Moisture idx (CMI)
0,38
Runoff
873mm/an
PET
1 005mm
AET
997mm
Mean slope
5,7°
Water table
175cm
Forest
28%
Crops
4%
Urban
65%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)