Ontologia

HydroBASINS lev08 watershed · #4080560470

Bassin de 利根川

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 7 administrative regions : Katashina, Kawaba, Minakami, Minamiuonuma, Numata +2

14% lakePfafstetter: 41301699

Sub-basin area

580,4km²

Upstream area

580,4km²

Discharge

16,07m³/s

Mean elev.

1 149m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 四釜川52 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

7 dept-equivalent regions (GADM L2)

23 intersecting protected areas

14 more protected areas

  • Makihata yama tomen

    IUCN V

    Prefectural Nature Conservation Area

    4.79 km² overlap

  • Omineyama

    IUCN IV

    Prefectural Wildlife Protection Area

    3.51 km² overlap

  • Takara gawa

    IUCN V

    Prefectural Nature Conservation Area

    2.49 km² overlap

  • Oze

    IUCN II

    National Park

    2.46 km² overlap

  • Oze

    IUCN IV

    Prefectural Wildlife Protection Area

    2.25 km² overlap

  • Oze

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    1.68 km² overlap

  • Yunotani okutadamiko

    IUCN IV

    Prefectural Wildlife Protection Area

    1.37 km² overlap

  • Echigosanzan-Tadami

    IUCN II

    Quasi National Park

    1.37 km² overlap

  • Sennokurayama

    IUCN IV

    Prefectural Wildlife Protection Area

    1.00 km² overlap

  • Mantaroyama

    IUCN IV

    Prefectural Wildlife Protection Area

    0.62 km² overlap

  • Uonuma renpo

    IUCN V

    Prefectural Natural Park

    0.55 km² overlap

  • Jujikyo

    IUCN IV

    Prefectural Wildlife Protection Area

    0.40 km² overlap

  • Tanigawadake Sawagurumi Idenshigen

    IUCN IV

    Rare Population Protected Forest

    0.09 km² overlap

  • Omine numa

    IUCN V

    Prefectural Nature Conservation Area

    0.03 km² overlap

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

Species present

2 913 distinct species · 18 835 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

18 835 obs · 18 cellules
Obs. / cellule
≥ 3 232
2 788–3 231
1 305–2 787
1 048–1 304
< 1 048

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

Ecological tissue

Sample of 8 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 利根川 : 8 espèces reliées par 5 interactions GloBI sur 4 types (connectance 17.9%, filtre Serrano α=0.2).

Espèces affichées
8
Interactions affichées
5
Connectance
0.179
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°

7,2°C

Annual rain

1 872mm

Moisture idx (CMI)

0,56

Runoff

977mm/an

PET

817mm

AET

815mm

Mean slope

20,8°

Water table

630cm

Forest

67%

Crops

27%

Urban

1%

Protected

22%

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