HydroBASINS lev08 watershed · #4080041290
Bassin de 大日川
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 3 administrative regions : Awaji, Minamiawaji, Sumoto
Sub-basin area
642,5km²
Upstream area
642,5km²
Discharge
6,47m³/s
Mean elev.
114m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 222.3 km²34.6% of basin
- 189.4 km²29.5% of basin
- 187.5 km²29.2% of basin
23 intersecting protected areas
Setonaikai
IUCN VNational Park
66.18 km² overlap
Common fishery right area
43.60 km² overlap
Kenritsu awajishima koen
IUCN IVPrefectural Wildlife Protection Area
9.97 km² overlap
Nantan
IUCN IVPrefectural Wildlife Protection Area
1.24 km² overlap
Sumotochuo
IUCN IVPrefectural Wildlife Protection Area
1.21 km² overlap
Iseno mori
IUCN IVPrefectural Wildlife Protection Area
1.15 km² overlap
Miharayagi
IUCN IVPrefectural Wildlife Protection Area
1.05 km² overlap
Yura Ubamegashi Idenshigen
IUCN IVRare Population Protected Forest
0.46 km² overlap
Mikumayama
IUCN IVPrefectural Wildlife Protection Area
0.45 km² overlap
14 more protected areassorted by overlap area
Hase
IUCN VPrefectural Nature Conservation Area
0.36 km² overlap
Senzan
IUCN IVPrefectural Wildlife Protection Area
0.32 km² overlap
Protected Water Surface
0.22 km² overlap
Protected Water Surface
0.16 km² overlap
Protected Water Surface
0.12 km² overlap
Aiga
IUCN VNatural Coastal Protected Zone
0.10 km² overlap
Kuruma
IUCN VNatural Coastal Protected Zone
0.08 km² overlap
Atsuhama
IUCN VNatural Coastal Protected Zone
0.07 km² overlap
Nariai ji
IUCN VPrefectural Nature Conservation Area
0.05 km² overlap
Iwagami jinja
IUCN VEnvironmental Green Space Conservation Area(Hyogo)
0.03 km² overlap
Hakusan jinja
IUCN VPrefectural Nature Conservation Area
0.02 km² overlap
Izanagi jingu
IUCN VPrefectural Nature Conservation Area
0.02 km² overlap
Nushima jinja
IUCN VPrefectural Nature Conservation Area
0.01 km² overlap
Aiya no mori
IUCN VEnvironmental Green Space Conservation Area(Hyogo)
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 992 distinct species · 15 911 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 大日川 : 37 espèces reliées par 37 interactions GloBI sur 3 types (connectance 5.0%, filtre Serrano α=0.2). 2 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 476mm
Moisture idx (CMI)
0,33
Runoff
757mm/an
PET
977mm
AET
970mm
Mean slope
8,1°
Water table
300cm
Forest
25%
Crops
21%
Urban
22%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)