HydroBASINS lev08 watershed · #4080044760
Bassin de 江戸川
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 19 administrative regions : Chiba, Edogawa, Funabashi, Ichihara, Ichikawa +14
Sub-basin area
599,8km²
Upstream area
599,8km²
Discharge
0,6m³/s
Mean elev.
22m
Administrative coverage
19 dept-equivalent regions (GADM L2)
- 189.7 km²31.6% of basin
- 75.3 km²12.6% of basin
- 74.7 km²12.4% of basin
- 58.0 km²9.7% of basin
- 50.0 km²8.3% of basin
- IchikawaChiba · Japan37.0 km²6.2% of basin
- NagareyamaChiba · Japan23.5 km²3.9% of basin
- 22.6 km²3.8% of basin
11 moreFull L2 list
- Kamagaya12.2 km² · 2.0%
- Nagara8.9 km² · 1.5%
- Misato City8.5 km² · 1.4%
- Katsushika8.1 km² · 1.3%
- Kashiwa3.4 km² · 0.6%
- Yoshikawa1.6 km² · 0.3%
- Urayasu1.6 km² · 0.3%
- Mobara0.3 km² · 0.0%
- Yotsukaido0.3 km² · 0.0%
- Yachiyo0.2 km² · 0.0%
- Shiroi0.0 km² · 0.0%
30 intersecting protected areas
Chibashi
IUCN IVPrefectural Wildlife Protection Area
16.34 km² overlap
Shizu
IUCN IVPrefectural Wildlife Protection Area
7.74 km² overlap
Nagara machi
IUCN IVPrefectural Wildlife Protection Area
6.98 km² overlap
Yamakura
IUCN IVPrefectural Wildlife Protection Area
2.42 km² overlap
Kasamori tsurumai
IUCN VPrefectural Natural Park
1.96 km² overlap
Tokyoko
IUCN IVPrefectural Wildlife Protection Area
1.83 km² overlap
Gyoutoku
IUCN VSuburban Special Green Conservation Areas
0.83 km² overlap
Gyotoku
IUCN IVPrefectural Wildlife Protection Area
0.57 km² overlap
Hanamigawa
IUCN IVPrefectural Wildlife Protection Area
0.53 km² overlap
21 more protected areassorted by overlap area
Yatsu
IUCN IVNational Wildlife Protection Area
0.42 km² overlap
Yatsu-higata
IUCN Not ReportedWetland of International Importance (Ramsar Site)
0.42 km² overlap
Wakamatsu
IUCN IVPrefectural Wildlife Protection Area
0.25 km² overlap
Joumon no mori
IUCN VSpecial green space conservation districts
0.22 km² overlap
Kasaioki sanmaisu
IUCN IVNational Wildlife Protection Area
0.12 km² overlap
Nitona
IUCN VSpecial green space conservation districts
0.08 km² overlap
Kashiwai
IUCN VSpecial green space conservation districts
0.06 km² overlap
Common fishery right area
0.06 km² overlap
Kokubu river regulation pond green space the district where natural interaction zone, a part of the district walk and rest can make walk and rest zone
IUCN Not ApplicableOECM
0.05 km² overlap
Minamoto
IUCN VSpecial green space conservation districts
0.05 km² overlap
Nagasaku
IUCN VSpecial green space conservation districts
0.05 km² overlap
Sakatsuki
IUCN VSpecial green space conservation districts
0.05 km² overlap
Kawado
IUCN VSpecial green space conservation districts
0.04 km² overlap
SHITADANOMORI
IUCN Not ApplicableOECM
0.03 km² overlap
Kasai Marine Park
IUCN IVWetland of International Importance (Ramsar Site)
0.03 km² overlap
Sakaine
IUCN VSpecial green space conservation districts
0.03 km² overlap
Kuriyama
IUCN VSpecial green space conservation districts
0.02 km² overlap
Yakiri
IUCN VSpecial green space conservation districts
0.02 km² overlap
Kouya
IUCN VSpecial green space conservation districts
0.02 km² overlap
Miyazakidai
IUCN VSpecial green space conservation districts
0.02 km² overlap
Kaizuka
IUCN VSpecial green space conservation districts
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 137 distinct species · 179 187 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 江戸川 : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 67 interactions GloBI sur 4 types (connectance 12.7%, filtre Serrano α=0.2). 12 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°
15,2°C
Annual rain
1 446mm
Moisture idx (CMI)
0,33
Runoff
654mm/an
PET
966mm
AET
955mm
Mean slope
1,0°
Water table
30cm
Forest
9%
Crops
1%
Urban
90%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)