Ontologia

HydroBASINS lev08 watershed · #4080521450

Bassin de 阿賀野川

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 8 administrative regions : Aga, Agano, Gosen, Kamo, Niigata +3

Pfafstetter: 41301323

Sub-basin area

862,8km²

Upstream area

7 511,7km²

Discharge

237,32m³/s

Mean elev.

303m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 阿賀野川14 km²

▲ Receives from 2 basins

8 dept-equivalent regions (GADM L2)

19 intersecting protected areas

  • Okuhayade awasumon

    IUCN V

    Prefectural Natural Park

    162.18 km² overlap

  • Agano gawa line

    IUCN V

    Prefectural Natural Park

    19.89 km² overlap

  • Gozu renpo

    IUCN V

    Prefectural Natural Park

    8.38 km² overlap

  • Hoshusan

    IUCN IV

    Prefectural Wildlife Protection Area

    6.77 km² overlap

  • Gozurenpo

    IUCN IV

    Prefectural Wildlife Protection Area

    4.75 km² overlap

  • Yoshizu

    IUCN IV

    Prefectural Wildlife Protection Area

    2.58 km² overlap

  • Akiha

    IUCN IV

    Prefectural Wildlife Protection Area

    2.29 km² overlap

  • Nishiyama

    IUCN IV

    Prefectural Wildlife Protection Area

    2.13 km² overlap

  • Hoshu san

    IUCN V

    Prefectural Nature Conservation Area

    0.83 km² overlap

10 more protected areas

  • Kasabori Kamoshika

    IUCN IV

    Rare Population Protected Forest

    0.36 km² overlap

  • Manaitakurayama Sugi

    IUCN IV

    Rare Population Protected Forest

    0.31 km² overlap

  • Kirinzan

    IUCN IV

    Prefectural Wildlife Protection Area

    0.30 km² overlap

  • Manaitakura yama

    IUCN V

    Prefectural Nature Conservation Area

    0.26 km² overlap

  • Iidesan Shuhen

    IUCN Ib

    Forest Ecosystem Reserve

    0.20 km² overlap

  • Bandai asahi

    IUCN II

    National Park

    0.18 km² overlap

  • Atagoyama

    IUCN IV

    Prefectural Wildlife Protection Area

    0.08 km² overlap

  • Atagoyama

    IUCN V

    Green Space Environment Conservation Area(Niigata)

    0.07 km² overlap

  • Hakusan Keyaki Idenshigen

    IUCN IV

    Rare Population Protected Forest

    0.07 km² overlap

  • Kasabori

    IUCN IV

    Prefectural Wildlife Protection Area

    0.01 km² overlap

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

Species present

962 distinct species · 3 541 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 541 obs · 24 cellules
Obs. / cellule
≥ 1 001
229–1 000
99–228
77–98
< 77

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

Ecological tissue

Sample of 26 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 阿賀野川 : 22 espèces reliées par 31 interactions GloBI sur 3 types (connectance 8.8%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
27
Interactions affichées
31
Connectance
0.088
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°

11,4°C

Annual rain

1 846mm

Moisture idx (CMI)

0,51

Runoff

1 186mm/an

PET

906mm

AET

881mm

Mean slope

13,3°

Water table

413cm

Forest

56%

Crops

14%

Urban

14%

Protected

24%

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