HydroBASINS lev08 watershed · #4080040100
Bassin de 祓川
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 8 administrative regions : Aka, Buzen, Chikujō, Kōge, Miyako +3
Sub-basin area
337,2km²
Upstream area
337,2km²
Discharge
3,33m³/s
Mean elev.
220m
Administrative coverage
8 dept-equivalent regions (GADM L2)
- 116.7 km²34.6% of basin
- 105.3 km²31.2% of basin
- MiyakoFukuoka · Japan69.6 km²20.6% of basin
- 30.4 km²9.0% of basin
- 3.3 km²1.0% of basin
- 1.7 km²0.5% of basin
- 0.6 km²0.2% of basin
- 0.0 km²0.0% of basin
11 intersecting protected areas
Yaba-Hita-Hikosan
IUCN VQuasi National Park
31.84 km² overlap
Kuboteyama
IUCN IVPrefectural Wildlife Protection Area
11.08 km² overlap
Common fishery right area
8.75 km² overlap
Yukuhashi
IUCN IVPrefectural Wildlife Protection Area
8.45 km² overlap
Chikuho
IUCN VPrefectural Natural Park
6.01 km² overlap
Hachiya
IUCN IVPrefectural Wildlife Protection Area
3.88 km² overlap
Mikekado
IUCN VNatural Coastal Protected Zone
0.57 km² overlap
Shoueura
IUCN VNatural Coastal Protected Zone
0.31 km² overlap
Inugadake Buna To Idenshigen
IUCN IVRare Population Protected Forest
0.31 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
323 distinct species · 577 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 祓川 : 25 espèces reliées par 24 interactions GloBI sur 3 types (connectance 5.9%, 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°
14,5°C
Annual rain
1 864mm
Moisture idx (CMI)
0,42
Runoff
1 080mm/an
PET
1 060mm
AET
1 055mm
Mean slope
8,7°
Water table
294cm
Forest
45%
Crops
22%
Urban
23%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)