HydroBASINS lev08 watershed · #4080041740
Bassin de 笹ヶ瀬川
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 : Hayashima, Kibichūō, Kurashiki, Marugame, Naoshima +4
Sub-basin area
797,2km²
Upstream area
797,2km²
Discharge
0,24m³/s
Mean elev.
66m
Administrative coverage
9 dept-equivalent regions (GADM L2)
- 304.8 km²38.2% of basin
- 231.2 km²29.0% of basin
- 100.4 km²12.6% of basin
- 58.8 km²7.4% of basin
- 12.3 km²1.5% of basin
- 9.4 km²1.2% of basin
- 8.6 km²1.1% of basin
- 8.1 km²1.0% of basin
1 moreFull L2 list
- Sakaide1.6 km² · 0.2%
28 intersecting protected areas
Setonaikai
IUCN VNational Park
85.00 km² overlap
Common fishery right area
22.16 km² overlap
Kibishiseki
IUCN VPrefectural Natural Park
21.12 km² overlap
Common fishery right area
20.77 km² overlap
Tamano
IUCN IVPrefectural Wildlife Protection Area
9.80 km² overlap
Kibiji fudokino oka
IUCN VPrefectural Natural Park
8.91 km² overlap
Washuzan
IUCN IVPrefectural Wildlife Protection Area
6.13 km² overlap
Kinkozan
IUCN IVPrefectural Wildlife Protection Area
6.03 km² overlap
Kaigarayama
IUCN IVPrefectural Wildlife Protection Area
5.40 km² overlap
19 more protected areassorted by overlap area
Kojimako
IUCN IVPrefectural Wildlife Protection Area
5.13 km² overlap
Tanematsuyama
IUCN IVPrefectural Wildlife Protection Area
3.95 km² overlap
Ojigatake
IUCN IVPrefectural Wildlife Protection Area
3.68 km² overlap
Mukoyama
IUCN IVPrefectural Wildlife Protection Area
3.41 km² overlap
Iyama
IUCN IVPrefectural Wildlife Protection Area
2.57 km² overlap
Awai timberforest path
IUCN Not ApplicableOECM
1.91 km² overlap
Kojimayuga
IUCN IVPrefectural Wildlife Protection Area
1.59 km² overlap
Nichioji
IUCN IVPrefectural Wildlife Protection Area
1.31 km² overlap
Sakazu
IUCN IVPrefectural Wildlife Protection Area
0.93 km² overlap
Shinkumano gihouzan
IUCN VLocal Nature Protection Area(Okayama)
0.63 km² overlap
Ta no kuchi
IUCN VEnvironmental Green Space Protection Area(Okayama)
0.35 km² overlap
Protected Water Surface
0.18 km² overlap
Hokoshima
IUCN VNatural Coastal Protected Zone
0.12 km² overlap
Ooimiyayama
IUCN VLocal Nature Protection Area(Okayama)
0.09 km² overlap
Asabara
IUCN VLocal Nature Protection Area(Okayama)
0.08 km² overlap
Kibi kogen
IUCN IVPrefectural Wildlife Protection Area
0.05 km² overlap
Karakotonoura
IUCN VNatural Coastal Protected Zone
0.02 km² overlap
Hieda hachimanguu
IUCN VLocal Nature Protection Area(Okayama)
0.02 km² overlap
KONKEN BIO GARDEN･KONKEN THERAPY GARDEN
IUCN Not ApplicableOECM
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 675 distinct species · 17 740 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 笹ヶ瀬川 : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 47 interactions GloBI sur 4 types (connectance 10.1%, filtre Serrano α=0.2). 5 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°
15,0°C
Annual rain
1 219mm
Moisture idx (CMI)
0,13
Runoff
689mm/an
PET
1 061mm
AET
1 004mm
Mean slope
5,6°
Water table
237cm
Forest
26%
Crops
8%
Urban
59%
Protected
20%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)