Ontologia

HydroBASINS lev08 watershed · #4080571600

Bassin de 那珂川

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 13 administrative regions : Daigo, Hitachinaka, Hitachiōmiya, Ibaraki, Ichikai +8

Pfafstetter: 41301583

Sub-basin area

803,6km²

Upstream area

2 827,5km²

Discharge

65,92m³/s

Mean elev.

123m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 那珂川1 km²

▲ Receives from 2 basins

13 dept-equivalent regions (GADM L2)

5 more

27 intersecting protected areas

  • Gozen yama

    IUCN V

    Prefectural Natural Park

    75.43 km² overlap

  • Naka gawa

    IUCN V

    Prefectural Natural Park

    19.79 km² overlap

  • Gozenyama

    IUCN IV

    Prefectural Wildlife Protection Area

    18.40 km² overlap

  • Mito

    IUCN IV

    Prefectural Wildlife Protection Area

    14.57 km² overlap

  • Senba

    IUCN IV

    Prefectural Wildlife Protection Area

    12.43 km² overlap

  • Naka

    IUCN IV

    Prefectural Wildlife Protection Area

    8.52 km² overlap

  • Mashiko

    IUCN V

    Prefectural Natural Park

    7.67 km² overlap

  • Mobility Resort Motegi

    IUCN Not Applicable

    OECM

    4.14 km² overlap

  • Otsukaike

    IUCN IV

    Prefectural Wildlife Protection Area

    2.79 km² overlap

18 more protected areas

  • Mito

    IUCN V

    Prefectural Natural Park

    2.25 km² overlap

  • Kasama

    IUCN V

    Prefectural Natural Park

    2.24 km² overlap

  • Yakimori yama

    IUCN V

    Prefectural Nature Conservation Area

    0.67 km² overlap

  • Ganma field

    IUCN IV

    Prefectural Wildlife Protection Area

    0.61 km² overlap

  • Nakagawa kokumin kyuyochi

    IUCN IV

    Prefectural Wildlife Protection Area

    0.32 km² overlap

  • Seion ji

    IUCN V

    Prefectural Nature Conservation Area

    0.24 km² overlap

  • Uwaichi

    IUCN V

    Special green space conservation districts

    0.23 km² overlap

  • Matsukurayama

    IUCN IV

    Prefectural Wildlife Protection Area

    0.21 km² overlap

  • Ayuta

    IUCN V

    Prefectural Nature Conservation Area

    0.16 km² overlap

  • Matsukura yama

    IUCN V

    Prefectural Nature Conservation Area

    0.15 km² overlap

  • Komatsuzi

    IUCN V

    Prefectural Nature Conservation Area

    0.11 km² overlap

  • Mito Works, Hitachi Group

    IUCN Not Applicable

    OECM

    0.10 km² overlap

  • Kamagami

    IUCN V

    Prefectural Nature Conservation Area

    0.07 km² overlap

  • Aoyama

    IUCN V

    Green Space Environment Conservation Area(Ibaraki)

    0.07 km² overlap

  • Torinoko san (ibaraki)

    IUCN V

    Prefectural Nature Conservation Area

    0.06 km² overlap

  • Torinoko san (tochigi)

    IUCN V

    Prefectural Nature Conservation Area

    0.02 km² overlap

  • Shizu

    IUCN V

    Green Space Environment Conservation Area(Ibaraki)

    0.01 km² overlap

  • Torinokoyama

    IUCN IV

    Prefectural Wildlife Protection Area

    0.00 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

3 086 distinct species · 18 805 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

18 805 obs · 24 cellules
Obs. / cellule
≥ 4 578
2 004–4 577
861–2 003
213–860
< 213

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

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

Indicateurs du tissu écologique

Tissu écologique de Bassin de 那珂川 : 32 espèces reliées par 52 interactions GloBI sur 4 types (connectance 6.0%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
42
Interactions affichées
52
Connectance
0.060
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

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

Hydroclimate (BasinATLAS lev08)

Mean T°

13,2°C

Annual rain

1 420mm

Moisture idx (CMI)

0,30

Runoff

677mm/an

PET

995mm

AET

989mm

Mean slope

5,3°

Water table

195cm

Forest

58%

Crops

22%

Urban

28%

Protected

18%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)