Ruisseau· 11 segments

涸沼川

Crosses 8 administrative regions : Hitachinaka, Hokota, Ibaraki, Kasama, Mito +3

ruisseau

Total length

66km

Max discharge

10m³/s

Max Strahler

Segments matched

River geography8 admin regions · 0 communes

Parent watershed

hybas-4080572040473 km²

8 administrative regions crossed (GADM L2)

Kasama
Ibaraki · Japan
26.1 km
in this dpt
Hokota
Ibaraki · Japan
3.9 km
in this dpt
Water body
Ibaraki · Japan
3.7 km
in this dpt
Mito
Ibaraki · Japan
3.5 km
in this dpt
Ibaraki
Ibaraki · Japan
3.4 km
in this dpt
Ōarai
Ibaraki · Japan
2.8 km
in this dpt
Hitachinaka
Ibaraki · Japan
0.1 km
in this dpt
Shirosato
Ibaraki · Japan
0.0 km
in this dpt

9 intersecting protected areas

Common fishery right area(Ibaraki)
IUCN VI
Common fishery right area
Agakuni atago
IUCN V
Prefectural Natural Park
Kasama
IUCN V
Prefectural Natural Park
Oarai
IUCN V
Prefectural Natural Park
Hinuma
IUCN IV
National Wildlife Protection Area
Hinuma
IUCN IV
Wetland of International Importance (Ramsar Site)
Tomobe
IUCN IV
Prefectural Wildlife Protection Area
Sashiroyama
IUCN IV
Prefectural Wildlife Protection Area
Kasamako
IUCN IV
Prefectural Wildlife Protection Area

1 page = 1 named river (aggregation of 11 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

84 distinct species · 210 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 22 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 涸沼川 : 18 espèces reliées par 32 interactions GloBI sur 2 types (connectance 12.6%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.127

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)