Rivière· 30 segments
荒川
Crosses 30 administrative regions : Adachi, Ageo, Arakawa, Asaka, Chichibu +25
Total length
604km
Max discharge
55,2m³/s
Max Strahler
5
Segments matched
30
River geography30 admin regions · 0 communes
30 administrative regions crossed (GADM L2)
- ChichibuSaitama · Japan46.1 kmin this dpt
- KumagayaSaitama · Japan14.2 kmin this dpt
- FukayaSaitama · Japan9.9 kmin this dpt
- SaitamaSaitama · Japan9.6 kmin this dpt
- KōnosuSaitama · Japan8.7 kmin this dpt
- AdachiTokyo · Japan7.3 kmin this dpt
- TodaSaitama · Japan7.0 kmin this dpt
- WakōSaitama · Japan4.9 kmin this dpt
- KatsushikaTokyo · Japan4.2 kmin this dpt
- KawagoeSaitama · Japan4.0 kmin this dpt
- YoriiSaitama · Japan4.0 kmin this dpt
- NerimaTokyo · Japan3.6 kmin this dpt
- OkegawaSaitama · Japan3.4 kmin this dpt
- KitamotoSaitama · Japan3.0 kmin this dpt
- AgeoSaitama · Japan2.9 kmin this dpt
- KitaTokyo · Japan2.6 kmin this dpt
- KawajimaSaitama · Japan2.1 kmin this dpt
- MinanoSaitama · Japan1.8 kmin this dpt
- YoshimiSaitama · Japan1.8 kmin this dpt
- KawaguchiSaitama · Japan1.1 kmin this dpt
- GyōdaSaitama · Japan0.5 kmin this dpt
- ShikiSaitama · Japan0.3 kmin this dpt
- ItabashiTokyo · Japan0.2 kmin this dpt
- FujimiSaitama · Japan0.1 kmin this dpt
- SumidaTokyo · Japan0.0 kmin this dpt
- ArakawaTokyo · Japan0.0 kmin this dpt
- EdogawaTokyo · Japan0.0 kmin this dpt
- AsakaSaitama · Japan0.0 kmin this dpt
- NishitōkyōTokyo · Japan0.0 kmin this dpt
- OganoSaitama · Japan0.0 kmin this dpt
18 intersecting protected areas
Chichibu tama kai
IUCN VNational Park
Nagatoro tamayodo
IUCN VPrefectural Natural Park
Buko
IUCN VPrefectural Natural Park
Hiki kyuryo
IUCN VPrefectural Natural Park
Shiroishiyama
IUCN IVPrefectural Wildlife Protection Area
Arakawa nannbu
IUCN IVPrefectural Wildlife Protection Area
Yadake
IUCN IVPrefectural Wildlife Protection Area
Orihara
IUCN IVPrefectural Wildlife Protection Area
Arakawa oaso
IUCN IVPrefectural Wildlife Protection Area
9 more protected areassorted by area
Kitamoto
IUCN IVPrefectural Wildlife Protection Area
Kawamisegawara
IUCN IVPrefectural Wildlife Protection Area
Kyu shibakawa
IUCN IVPrefectural Wildlife Protection Area
Kawamoto
IUCN IVPrefectural Wildlife Protection Area
Obusuma chugakko
IUCN IVPrefectural Wildlife Protection Area
Shirakojuku
IUCN VSpecial green space conservation districts
Gobouyama
IUCN VSpecial green space conservation districts
Osaka
IUCN VSpecial green space conservation districts
Gobouyagumodai
IUCN VSpecial green space conservation districts
1 page = 1 named river (aggregation of 30 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
371 distinct species · 881 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 荒川 : 32 espèces reliées par 56 interactions GloBI sur 2 types (connectance 8.4%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
604km
Max discharge
55,2m³/s
Max Strahler
5
Segments matched
30
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.