Ruisseau· 2 segments

不老川

Crosses 7 administrative regions : Hamura, Iruma, Kawagoe, Mizuho, Sayama +2

ruisseau

Total length

25km

Max discharge

1,7m³/s

Max Strahler

Segments matched

River geography7 admin regions · 0 communes

Parent watershed

hybas-4080591120795 km²

7 administrative regions crossed (GADM L2)

Kawagoe
Saitama · Japan
7.1 km
in this dpt
Iruma
Saitama · Japan
6.3 km
in this dpt
Sayama
Saitama · Japan
6.1 km
in this dpt
Mizuho
Tokyo · Japan
3.5 km
in this dpt
Tokorozawa
Saitama · Japan
0.9 km
in this dpt
Ōme
Tokyo · Japan
0.6 km
in this dpt
Hamura
Tokyo · Japan
0.0 km
in this dpt

15 intersecting protected areas

Sayama (saitama)
IUCN V
Prefectural Natural Park
Higashi iruma
IUCN IV
Prefectural Wildlife Protection Area
Sayamako
IUCN IV
Prefectural Wildlife Protection Area
Sayama (tokyo)
IUCN V
Prefectural Natural Park
Murayamayamaguchi
IUCN IV
Prefectural Wildlife Protection Area
Sayamashi horikane-kamiakasaka
IUCN V
Hometown green landscape(Saitama)
Kawagoeshi shimoakasaka
IUCN V
Hometown green landscape(Saitama)
Tokorozawashi kitanaka
IUCN V
Hometown green landscape(Saitama)
Fujiminoshi hatchou
IUCN V
Hometown green landscape(Saitama)

6 more protected areassorted by area

Sayamashi mizuno
IUCN V
Hometown green landscape(Saitama)
Kawagoeshi kamimatsubara
IUCN V
Hometown green landscape(Saitama)
Sayamashi nigemizu
IUCN V
Hometown green landscape(Saitama)
Kitaiwaoka-shimotomi
IUCN V
Special green space conservation districts
Sayamashi minamiirumano
IUCN V
Hometown green landscape(Saitama)
Totoro Forest
IUCN Not Applicable
OECM

1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

289 distinct species · 510 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 39 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 不老川 : 26 espèces reliées par 45 interactions GloBI sur 5 types (connectance 5.8%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.058

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)