HydroBASINS lev08 watershed · #4080044500
Bassin de 新川
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 3 administrative regions : Hitachinaka, Naka, Tōkai
Sub-basin area
64,2km²
Upstream area
64,3km²
Discharge
1,47m³/s
Mean elev.
23m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- HitachinakaIbaraki · Japan38.2 km²59.5% of basin
- TōkaiIbaraki · Japan17.2 km²26.9% of basin
- 4.8 km²7.5% of basin
7 intersecting protected areas
Tokai
IUCN IVPrefectural Wildlife Protection Area
5.01 km² overlap
Hitachi kaihin koen
IUCN IVPrefectural Wildlife Protection Area
4.99 km² overlap
Common fishery right area
2.26 km² overlap
Muramatsu
IUCN VPrefectural Nature Conservation Area
0.69 km² overlap
Oarai
IUCN VPrefectural Natural Park
0.56 km² overlap
Toyooka
IUCN VPrefectural Nature Conservation Area
0.38 km² overlap
Tarasaki jouseki
IUCN VGreen Space Environment Conservation Area(Ibaraki)
0.06 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
826 distinct species · 4 503 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 新川 : 31 espèces reliées par 42 interactions GloBI sur 4 types (connectance 7.1%, 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°
13,9°C
Annual rain
1 432mm
Moisture idx (CMI)
0,32
Runoff
716mm/an
PET
979mm
AET
974mm
Mean slope
1,1°
Water table
52cm
Forest
0%
Crops
10%
Urban
89%
Protected
17%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)