Ontologia

HydroBASINS lev08 watershed · #4080044830

Bassin de 神田川

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 26 administrative regions : Adachi, Arakawa, Bunkyō, Chiyoda, Chūō +21

Coastal basin 2% lakePfafstetter: 41301731

Sub-basin area

332,1km²

Upstream area

332,1km²

Discharge

1,04m³/s

Mean elev.

24m

Administrative coverage

26 dept-equivalent regions (GADM L2)

18 more

23 intersecting protected areas

  • Tokyoko

    IUCN IV

    Prefectural Wildlife Protection Area

    73.40 km² overlap

  • Tamagawa

    IUCN IV

    Prefectural Wildlife Protection Area

    0.85 km² overlap

  • Setagaya

    IUCN IV

    Prefectural Wildlife Protection Area

    0.78 km² overlap

  • Yoyogi

    IUCN V

    Special green space conservation districts

    0.71 km² overlap

  • Ueno onshi koen

    IUCN IV

    Prefectural Wildlife Protection Area

    0.51 km² overlap

  • Tamagawa

    IUCN IV

    Prefectural Wildlife Protection Area

    0.49 km² overlap

  • Inokashira onshi koen

    IUCN IV

    Prefectural Wildlife Protection Area

    0.19 km² overlap

  • Ueno

    IUCN V

    Special green space conservation districts

    0.06 km² overlap

  • Wadabori

    IUCN V

    Special green space conservation districts

    0.04 km² overlap

14 more protected areas

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

Species present

4 402 distinct species · 264 300 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

264 300 obs · 9 cellules
Obs. / cellule
≥ 72 188
72 188–72 187
44 142–72 187
24 904–44 141
< 24 904

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

Ecological tissue

Sample of 41 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 神田川 : 31 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 57 interactions GloBI sur 6 types (connectance 7.0%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
41
Interactions affichées
57
Connectance
0.070
Patrimoniales
2
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°

15,5°C

Annual rain

1 451mm

Moisture idx (CMI)

0,32

Runoff

739mm/an

PET

983mm

AET

974mm

Mean slope

1,0°

Water table

21cm

Forest

0%

Crops

0%

Urban

98%

Protected

23%

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