HydroBASINS lev08 watershed · #4080042490
Bassin de 円山川
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 9 administrative regions : Asago, Fukuchiyama, Kami, Kyōtango, Shisō +4
Sub-basin area
1 305,3km²
Upstream area
1 305,3km²
Discharge
53,41m³/s
Mean elev.
330m
Administrative coverage
9 dept-equivalent regions (GADM L2)
- 571.8 km²43.8% of basin
- 411.9 km²31.6% of basin
- 284.9 km²21.8% of basin
- 23.4 km²1.8% of basin
- 6.6 km²0.5% of basin
- 5.4 km²0.4% of basin
- FukuchiyamaKyoto · Japan1.0 km²0.1% of basin
- 0.2 km²0.0% of basin
1 moreFull L2 list
- Wakasa0.1 km² · 0.0%
30 intersecting protected areas
Tajima sangaku
IUCN VPrefectural Natural Park
111.70 km² overlap
Izushi itoi
IUCN VPrefectural Natural Park
76.17 km² overlap
Asago Gunsan
IUCN VPrefectural Natural Park
72.88 km² overlap
Quasi National Park
64.84 km² overlap
Saninkaigan
IUCN VNational Park
20.19 km² overlap
Hyonosen
IUCN IVPrefectural Wildlife Protection Area
16.17 km² overlap
Wetland of International Importance (Ramsar Site)
10.02 km² overlap
Maruyamagawa karyuiki
IUCN IVNational Wildlife Protection Area
9.78 km² overlap
Surugamine
IUCN IVPrefectural Wildlife Protection Area
8.28 km² overlap
21 more protected areassorted by overlap area
Kinosaki
IUCN IVPrefectural Wildlife Protection Area
5.79 km² overlap
Hachi kogen
IUCN IVPrefectural Wildlife Protection Area
4.62 km² overlap
Hyonosen・Sannomaru
IUCN IVBiocenosis Protected Forest
2.17 km² overlap
Sasaura
IUCN IVPrefectural Wildlife Protection Area
2.12 km² overlap
Yoka myokensan
IUCN IVPrefectural Wildlife Protection Area
2.08 km² overlap
Onzui chikusa
IUCN VPrefectural Natural Park
2.06 km² overlap
Quasi National Park
1.45 km² overlap
Toyooka nanbu
IUCN IVPrefectural Wildlife Protection Area
1.30 km² overlap
Toyooka tobu
IUCN IVPrefectural Wildlife Protection Area
0.91 km² overlap
Green Corridor
0.55 km² overlap
Hachikita kogen
IUCN IVPrefectural Wildlife Protection Area
0.46 km² overlap
Nishiyama
IUCN IVPrefectural Wildlife Protection Area
0.34 km² overlap
Stork friendly Nakasuji Satoyama landscape
IUCN Not ApplicableOECM
0.23 km² overlap
Nojo
IUCN IVPrefectural Wildlife Protection Area
0.18 km² overlap
Seppikomine yama
IUCN VPrefectural Natural Park
0.12 km² overlap
Common fishery right area
0.10 km² overlap
Shounji Rice Paddy Fields and Biotopes for Oriental Stork Conservation
IUCN Not ApplicableOECM
0.08 km² overlap
Hyonosen
IUCN IVPrefectural Wildlife Protection Area
0.04 km² overlap
Rare Population Protected Forest
0.04 km² overlap
Meiji gawa
IUCN VPrefectural Nature Conservation Area
0.03 km² overlap
Ooikube hyousu jinja
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
2 256 distinct species · 17 078 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 20 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 円山川 : 15 espèces reliées par 31 interactions GloBI sur 2 types (connectance 14.8%, filtre Serrano α=0.2). 6 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°
12,8°C
Annual rain
1 892mm
Moisture idx (CMI)
0,47
Runoff
1 135mm/an
PET
999mm
AET
986mm
Mean slope
15,5°
Water table
540cm
Forest
82%
Crops
7%
Urban
6%
Protected
28%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)