HydroBASINS lev08 watershed · #4080044730
Bassin de 小櫃川
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 6 administrative regions : Ichihara, Kamogawa, Kimitsu, Kisarazu, Sodegaura +1
Sub-basin area
292,9km²
Upstream area
293,2km²
Discharge
7,24m³/s
Mean elev.
103m
Administrative coverage
6 dept-equivalent regions (GADM L2)
- 151.1 km²51.6% of basin
- 66.6 km²22.7% of basin
- 59.1 km²20.2% of basin
- 7.4 km²2.5% of basin
- 6.1 km²2.1% of basin
- ŌtakiChiba · Japan2.3 km²0.8% of basin
14 intersecting protected areas
Yoro keikoku okukiyosumi
IUCN VPrefectural Natural Park
21.81 km² overlap
Kiyosumiyama
IUCN IVPrefectural Wildlife Protection Area
17.71 km² overlap
Kururi
IUCN IVPrefectural Wildlife Protection Area
6.14 km² overlap
Hiraoka
IUCN IVPrefectural Wildlife Protection Area
4.79 km² overlap
Motokiyosumi yama
IUCN VPrefectural Nature Conservation Area
1.89 km² overlap
Minamiboso
IUCN VQuasi National Park
1.40 km² overlap
Rare Population Protected Forest
1.17 km² overlap
Jizodo-yabukasekitai
IUCN VPrefectural Nature Conservation Area
0.29 km² overlap
Kamo
IUCN IVPrefectural Wildlife Protection Area
0.27 km² overlap
5 more protected areassorted by overlap area
Umegase keikoku
IUCN VPrefectural Nature Conservation Area
0.14 km² overlap
Daifuku yama hokubu
IUCN VPrefectural Nature Conservation Area
0.13 km² overlap
Common fishery right area
0.10 km² overlap
Mishima
IUCN IVPrefectural Wildlife Protection Area
0.07 km² overlap
Mitsuishiyama
IUCN VLocal Environment Conservation Area(Chiba)
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 775 distinct species · 29 311 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 10 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 小櫃川 : 9 espèces reliées par 7 interactions GloBI sur 3 types (connectance 15.6%, filtre Serrano α=0.2). 1 bulle taxonomique (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°
15,1°C
Annual rain
1 706mm
Moisture idx (CMI)
0,45
Runoff
821mm/an
PET
941mm
AET
939mm
Mean slope
5,4°
Water table
161cm
Forest
73%
Crops
28%
Urban
23%
Protected
13%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)