HydroBASINS lev08 watershed · #4080040050
Bassin de 遠賀川
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 31 administrative regions : Aka, Asakura, Ashiya, Chikushino, Chikuzen +26
Sub-basin area
1 022,4km²
Upstream area
1 022,6km²
Discharge
31,69m³/s
Mean elev.
160m
Administrative coverage
31 dept-equivalent regions (GADM L2)
- 211.4 km²20.7% of basin
- 143.5 km²14.0% of basin
- 134.8 km²13.2% of basin
- 83.6 km²8.2% of basin
- 59.4 km²5.8% of basin
- 48.3 km²4.7% of basin
- 42.8 km²4.2% of basin
- 42.7 km²4.2% of basin
23 moreFull L2 list
- Kawara41.7 km² · 4.1%
- Kawasaki39.6 km² · 3.9%
- Kitakyūshū39.3 km² · 3.8%
- Keisen18.8 km² · 1.8%
- Nakama18.4 km² · 1.8%
- Onga18.1 km² · 1.8%
- Mizumaki15.8 km² · 1.5%
- Kotake15.0 km² · 1.5%
- Ōtō12.3 km² · 1.2%
- Itoda7.8 km² · 0.8%
- Ashiya6.5 km² · 0.6%
- Okagaki6.1 km² · 0.6%
- Aka6.0 km² · 0.6%
- Chikuzen3.8 km² · 0.4%
- Tōhō2.3 km² · 0.2%
- Munakata1.1 km² · 0.1%
- Chikushino1.0 km² · 0.1%
- Umi0.7 km² · 0.1%
- Sasaguri0.4 km² · 0.0%
- Asakura0.4 km² · 0.0%
- Koga0.2 km² · 0.0%
- Nakatsu0.0 km² · 0.0%
- Miyako0.0 km² · 0.0%
25 intersecting protected areas
Dazaifu
IUCN VPrefectural Natural Park
61.80 km² overlap
Chikuho
IUCN VPrefectural Natural Park
28.90 km² overlap
Hikosan
IUCN IVPrefectural Wildlife Protection Area
24.75 km² overlap
Kitakyushu
IUCN VQuasi National Park
23.40 km² overlap
Yaba-Hita-Hikosan
IUCN VQuasi National Park
22.53 km² overlap
Chikugo gawa
IUCN VPrefectural Natural Park
16.39 km² overlap
Hobashirayama
IUCN IVPrefectural Wildlife Protection Area
11.10 km² overlap
Tagawa
IUCN IVPrefectural Wildlife Protection Area
10.05 km² overlap
Onga
IUCN IVPrefectural Wildlife Protection Area
8.27 km² overlap
16 more protected areassorted by overlap area
Yakiyama
IUCN IVPrefectural Wildlife Protection Area
7.56 km² overlap
Kawasaki
IUCN IVPrefectural Wildlife Protection Area
4.99 km² overlap
Koshosan
IUCN IVPrefectural Wildlife Protection Area
3.86 km² overlap
Agano
IUCN IVPrefectural Wildlife Protection Area
3.65 km² overlap
Sangunsan
IUCN IVPrefectural Wildlife Protection Area
3.65 km² overlap
Kayanomori
IUCN IVPrefectural Wildlife Protection Area
1.91 km² overlap
Yasu kogen
IUCN IVPrefectural Wildlife Protection Area
1.83 km² overlap
Hikosan Momi To Idenshigen
IUCN IVRare Population Protected Forest
0.99 km² overlap
Taihohakubasan
IUCN IVPrefectural Wildlife Protection Area
0.46 km² overlap
Intakiyama Akamatsuto
IUCN IVRare Population Protected Forest
0.08 km² overlap
Gyoja Sugi Idenshigen
IUCN IVRare Population Protected Forest
0.04 km² overlap
Hikosan
IUCN IVPrefectural Wildlife Protection Area
0.02 km² overlap
Maedake
IUCN VSpecial green space conservation districts
0.02 km² overlap
Hachisho
IUCN VSpecial green space conservation districts
0.01 km² overlap
Oneji Akagashito
IUCN IVRare Population Protected Forest
0.00 km² overlap
Wakasugiyama
IUCN IVPrefectural Wildlife Protection Area
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 355 distinct species · 6 524 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 遠賀川 : 32 espèces reliées par 42 interactions GloBI sur 3 types (connectance 6.0%, 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°
15,0°C
Annual rain
1 866mm
Moisture idx (CMI)
0,43
Runoff
1 060mm/an
PET
1 049mm
AET
1 047mm
Mean slope
8,0°
Water table
281cm
Forest
34%
Crops
13%
Urban
42%
Protected
18%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)