Rivière· 13 segments

荒川

Crosses 6 administrative regions : Chūō, Hayakawa, Kai, Kōfu, Minami-Alps +1

rivière

Total length

604km

Max discharge

23,1m³/s

Max Strahler

Segments matched

River geography6 admin regions · 0 communes

Parent watershed

hybas-40805963501046 km²

6 administrative regions crossed (GADM L2)

Kōfu
Yamanashi · Japan
27.2 km
in this dpt
Kai
Yamanashi · Japan
9.2 km
in this dpt
Minami-Alps
Yamanashi · Japan
2.5 km
in this dpt
Chūō
Yamanashi · Japan
0.8 km
in this dpt
Hayakawa
Yamanashi · Japan
0.0 km
in this dpt
Yamanashi
Yamanashi · Japan
0.0 km
in this dpt

8 intersecting protected areas

Chichibu tama kai
IUCN V
National Park
Minami alps
IUCN Not Applicable
UNESCO-MAB Biosphere Reserve
Minami alps
IUCN II
National Park
Hakuho
IUCN IV
Prefectural Wildlife Protection Area
Minami alps koma
IUCN V
Prefectural Natural Park
Chichibu renpo
IUCN IV
Prefectural Wildlife Protection Area
Mitake
IUCN IV
Prefectural Wildlife Protection Area
Katayama
IUCN IV
Prefectural Wildlife Protection Area

1 page = 1 named river (aggregation of 13 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

232 distinct species · 433 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 33 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de 荒川 : 30 espèces reliées par 27 interactions GloBI sur 4 types (connectance 4.8%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.048

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydrology (HydroRIVERS v10)