Ontologia

HydroBASINS lev08 watershed · #4080585020

Bassin de 入間川

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 12 administrative regions : Chichibu, Hannō, Hidaka, Iruma, Kawagoe +7

Pfafstetter: 41301724

Sub-basin area

314,5km²

Upstream area

314,6km²

Discharge

6,76m³/s

Mean elev.

225m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 荒川795 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

12 dept-equivalent regions (GADM L2)

4 more

12 intersecting protected areas

  • Okumusashi

    IUCN V

    Prefectural Natural Park

    134.28 km² overlap

  • Nishi musashi

    IUCN IV

    Prefectural Wildlife Protection Area

    9.50 km² overlap

  • Ome

    IUCN IV

    Prefectural Wildlife Protection Area

    3.38 km² overlap

  • Naguri genki plaza

    IUCN IV

    Prefectural Wildlife Protection Area

    0.90 km² overlap

  • Chichibu tama kai

    IUCN V

    National Park

    0.65 km² overlap

  • Chikozan chugakko

    IUCN IV

    Prefectural Wildlife Protection Area

    0.54 km² overlap

  • Buko

    IUCN V

    Prefectural Natural Park

    0.39 km² overlap

  • Oume no mori

    IUCN V

    Special green space conservation districts

    0.39 km² overlap

  • Naguri shogakko

    IUCN IV

    Prefectural Wildlife Protection Area

    0.31 km² overlap

3 more protected areas

  • Katsunumajoseki

    IUCN IV

    Prefectural Wildlife Protection Area

    0.15 km² overlap

  • Sasai shogakko

    IUCN IV

    Prefectural Wildlife Protection Area

    0.05 km² overlap

  • Inariyama

    IUCN V

    Special green space conservation districts

    0.02 km² overlap

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

Species present

2 026 distinct species · 10 820 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

10 820 obs · 9 cellules
Obs. / cellule
≥ 2 381
2 381–2 380
1 588–2 380
1 324–1 587
< 1 324

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 入間川 : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 50 interactions GloBI sur 4 types (connectance 6.4%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
50
Connectance
0.064
Patrimoniales
1
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°

13,6°C

Annual rain

1 436mm

Moisture idx (CMI)

0,28

Runoff

662mm/an

PET

1 033mm

AET

1 012mm

Mean slope

7,6°

Water table

246cm

Forest

46%

Crops

8%

Urban

59%

Protected

44%

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