HydroBASINS lev08 watershed · #4080041480
Bassin de 大和川
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 46 administrative regions : Ando, Asuka, Chihayaakasaka, Daitō, Fujiidera +41
Sub-basin area
1 099,6km²
Upstream area
1 099,6km²
Discharge
34,42m³/s
Mean elev.
191m
Administrative coverage
46 dept-equivalent regions (GADM L2)
- 115.6 km²10.5% of basin
- 99.8 km²9.1% of basin
- KawachinaganoOsaka · Japan98.0 km²8.9% of basin
- 65.2 km²5.9% of basin
- 57.3 km²5.2% of basin
- SakaiOsaka · Japan50.5 km²4.6% of basin
- 45.0 km²4.1% of basin
- YamatokōriyamaNara · Japan37.8 km²3.4% of basin
38 moreFull L2 list
- Tondabayashi37.0 km² · 3.4%
- Katsuragi36.4 km² · 3.3%
- Kashihara33.4 km² · 3.0%
- Chihayaakasaka30.9 km² · 2.8%
- Kanan30.8 km² · 2.8%
- Kashiba26.0 km² · 2.4%
- Kashiwara25.6 km² · 2.3%
- Habikino25.2 km² · 2.3%
- Heguri23.2 km² · 2.1%
- Asuka23.1 km² · 2.1%
- Takatori23.0 km² · 2.1%
- Tawaramoto22.9 km² · 2.1%
- Osaka21.4 km² · 1.9%
- Yamatotakada17.8 km² · 1.6%
- Matsubara14.7 km² · 1.3%
- Ikaruga14.5 km² · 1.3%
- Kōryō14.1 km² · 1.3%
- Taishi14.0 km² · 1.3%
- Ōsakasayama11.1 km² · 1.0%
- Ōyodo10.4 km² · 0.9%
- Kawai9.5 km² · 0.9%
- Sangō9.1 km² · 0.8%
- Fujiidera9.1 km² · 0.8%
- Yao8.0 km² · 0.7%
- Ōji6.5 km² · 0.6%
- Miyake5.8 km² · 0.5%
- Ando5.4 km² · 0.5%
- Kanmaki4.8 km² · 0.4%
- Kawanishi Town4.7 km² · 0.4%
- Shijōnawate3.0 km² · 0.3%
- Izumi2.7 km² · 0.2%
- Higashiōsaka1.2 km² · 0.1%
- Katano1.1 km² · 0.1%
- Uda0.9 km² · 0.1%
- Kizugawa0.7 km² · 0.1%
- Gojō0.4 km² · 0.0%
- Daitō0.4 km² · 0.0%
- Hirakata0.1 km² · 0.0%
23 intersecting protected areas
Kongo-Ikoma-Kisen
IUCN VQuasi National Park
113.87 km² overlap
Yamato-Aogaki
IUCN VQuasi National Park
53.45 km² overlap
Kongokatsuragi
IUCN IVPrefectural Wildlife Protection Area
31.45 km² overlap
Ikoma-shigisan
IUCN IVPrefectural Wildlife Protection Area
18.40 km² overlap
Nijosan
IUCN IVPrefectural Wildlife Protection Area
9.33 km² overlap
Iwawakisan
IUCN IVPrefectural Wildlife Protection Area
6.97 km² overlap
Takihata
IUCN IVPrefectural Wildlife Protection Area
6.46 km² overlap
Yata
IUCN VPrefectural Natural Park
5.33 km² overlap
Jizoji
IUCN IVPrefectural Wildlife Protection Area
3.66 km² overlap
14 more protected areassorted by overlap area
Kongosanroku
IUCN IVPrefectural Wildlife Protection Area
2.96 km² overlap
shijonawate
IUCN IVPrefectural Wildlife Protection Area
1.38 km² overlap
Amanosan
IUCN IVPrefectural Wildlife Protection Area
0.80 km² overlap
Muro-Akame-Aoyama
IUCN VQuasi National Park
0.50 km² overlap
Makiosan
IUCN IVPrefectural Wildlife Protection Area
0.37 km² overlap
Katano
IUCN IVPrefectural Wildlife Protection Area
0.18 km² overlap
Kongosan Buna
IUCN IVRare Population Protected Forest
0.16 km² overlap
Hirakata
IUCN IVPrefectural Wildlife Protection Area
0.14 km² overlap
Youraku Forest
IUCN Not ApplicableOECM
0.10 km² overlap
The Head Office, Environmental, Food, and Agricultural Sciences Research Center,RIEAFO
IUCN Not ApplicableOECM
0.08 km² overlap
Migukuru mitama jinja
IUCN VPrefectural Nature Conservation Area
0.02 km² overlap
Kindai Satoyama Biotope
IUCN Not ApplicableOECM
0.01 km² overlap
Ikomasan
IUCN IVPrefectural Wildlife Protection Area
0.01 km² overlap
Kagaya ryokuchi
IUCN VSpecial green space conservation districts
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 006 distinct species · 102 625 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 大和川 : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 44 interactions GloBI sur 3 types (connectance 6.3%, 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°
14,6°C
Annual rain
1 737mm
Moisture idx (CMI)
0,38
Runoff
1 071mm/an
PET
1 059mm
AET
1 053mm
Mean slope
6,2°
Water table
190cm
Forest
23%
Crops
5%
Urban
65%
Protected
19%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)