HydroBASINS lev08 watershed · #4080044360
Bassin de 請戸川
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 : Futaba, Iitate, Katsurao, Kawamata, Kawauchi +4
Sub-basin area
423,7km²
Upstream area
423,7km²
Discharge
9,19m³/s
Mean elev.
440m
Administrative coverage
9 dept-equivalent regions (GADM L2)
- 203.5 km²48.0% of basin
- 125.4 km²29.6% of basin
- 85.1 km²20.1% of basin
- 2.8 km²0.7% of basin
- 2.4 km²0.6% of basin
- 1.8 km²0.4% of basin
- 1.5 km²0.4% of basin
- 1.3 km²0.3% of basin
1 moreFull L2 list
- Kawamata0.0 km² · 0.0%
5 intersecting protected areas
Abukuma kogen chubu
IUCN VPrefectural Natural Park
41.83 km² overlap
Joroku
IUCN IVPrefectural Wildlife Protection Area
0.68 km² overlap
Katsurao shinrin koen
IUCN IVPrefectural Wildlife Protection Area
0.26 km² overlap
Common fishery right area
0.04 km² overlap
Tsushima Matsu Idenshigen
IUCN IVRare Population Protected Forest
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
309 distinct species · 27 076 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 請戸川 : 30 espèces reliées par 53 interactions GloBI sur 3 types (connectance 7.5%, filtre Serrano α=0.2). 8 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°
10,5°C
Annual rain
1 387mm
Moisture idx (CMI)
0,37
Runoff
700mm/an
PET
865mm
AET
862mm
Mean slope
9,4°
Water table
388cm
Forest
87%
Crops
4%
Urban
3%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)