Rivière· 12 segments
荒川
Crosses 6 administrative regions : Ichikai, Motegi, Nasukarasuyama, Sakura, Shioya +1
Total length
604km
Max discharge
48m³/s
Max Strahler
5
Segments matched
12
River geography6 admin regions · 0 communes
6 administrative regions crossed (GADM L2)
8 intersecting protected areas
Naka gawa
IUCN VPrefectural Natural Park
Yamizo kenmin kyuyo koen
IUCN IVPrefectural Wildlife Protection Area
Ohirazaki koen
IUCN IVPrefectural Wildlife Protection Area
NISHIMATSU Shioya symbiotic forest
IUCN Not ApplicableOECM
Kitsuregawa
IUCN IVPrefectural Wildlife Protection Area
Kotohirayama
IUCN IVPrefectural Wildlife Protection Area
Kobana
IUCN VPrefectural Nature Conservation Area
Kitsuregawa
IUCN VGreen Space Environment Conservation Area(Tochigi)
1 page = 1 named river (aggregation of 12 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
77 distinct species · 137 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 13 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 : 12 espèces reliées par 11 interactions GloBI sur 2 types (connectance 14.1%, 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).
Hydrology (HydroRIVERS v10)
Total length
604km
Max discharge
48,0m³/s
Max Strahler
5
Segments matched
12
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.