Ontologia

HydroBASINS lev08 watershed · #4080557390

Bassin de 箒川

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 6 administrative regions : Nakagawa, Nasushiobara, Nikkō, Otawara, Shioya +1

Pfafstetter: 41301586

Sub-basin area

519,5km²

Upstream area

519,5km²

Discharge

12,35m³/s

Mean elev.

589m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 那珂川369 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

6 dept-equivalent regions (GADM L2)

21 intersecting protected areas

  • Nikko

    IUCN V

    National Park

    185.65 km² overlap

  • Nikko and Azuma Mountains

    IUCN V

    Green Corridor

    106.48 km² overlap

  • Osabisanchi

    IUCN IV

    Biocenosis Protected Forest

    41.53 km² overlap

  • Shiobara

    IUCN IV

    Prefectural Wildlife Protection Area

    25.83 km² overlap

  • Osabiyama

    IUCN IV

    Prefectural Wildlife Protection Area

    14.94 km² overlap

  • Senbonmatsu

    IUCN IV

    Prefectural Wildlife Protection Area

    8.55 km² overlap

  • Shiobara dam

    IUCN IV

    Prefectural Wildlife Protection Area

    4.50 km² overlap

  • Yamizo

    IUCN V

    Prefectural Natural Park

    2.56 km² overlap

  • Chikasono

    IUCN V

    Prefectural Nature Conservation Area

    1.79 km² overlap

12 more protected areas

  • Karasugamori

    IUCN IV

    Prefectural Wildlife Protection Area

    1.73 km² overlap

  • Akada

    IUCN IV

    Prefectural Wildlife Protection Area

    1.09 km² overlap

  • Takaharayama Iramomi

    IUCN IV

    Rare Population Protected Forest

    0.84 km² overlap

  • Hokigawa

    IUCN IV

    Prefectural Wildlife Protection Area

    0.74 km² overlap

  • Osabi yama

    IUCN Ib

    Nature Conservation Area

    0.54 km² overlap

  • Nasu sports park

    IUCN IV

    Prefectural Wildlife Protection Area

    0.51 km² overlap

  • Shojinsawa

    IUCN IV

    Biocenosis Protected Forest

    0.41 km² overlap

  • Nogi koen

    IUCN IV

    Prefectural Wildlife Protection Area

    0.25 km² overlap

  • Ryujo koen

    IUCN IV

    Prefectural Wildlife Protection Area

    0.10 km² overlap

  • Hokine

    IUCN V

    Prefectural Nature Conservation Area

    0.06 km² overlap

  • CANON MEDICAL SYSTEMS CORPORATION

    IUCN Not Applicable

    OECM

    0.05 km² overlap

  • Kuzuri

    IUCN IV

    Prefectural Wildlife Protection Area

    0.01 km² overlap

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

Species present

1 274 distinct species · 6 613 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

6 613 obs · 16 cellules
Obs. / cellule
≥ 2 733
805–2 732
292–804
247–291
< 247

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

Ecological tissue

Sample of 30 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 箒川 : 23 espèces reliées par 49 interactions GloBI sur 4 types (connectance 9.9%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
49
Connectance
0.099
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°

10,2°C

Annual rain

1 635mm

Moisture idx (CMI)

0,42

Runoff

754mm/an

PET

914mm

AET

904mm

Mean slope

9,3°

Water table

267cm

Forest

27%

Crops

49%

Urban

18%

Protected

39%

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