Ontologia

HydroBASINS lev08 watershed · #4080571010

Bassin de 千曲川

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 23 administrative regions : Annaka, Chichibu, Chino, Hokuto, Karuizawa +18

Pfafstetter: 41301290

Sub-basin area

1 625,8km²

Upstream area

1 625,8km²

Discharge

42,34m³/s

Mean elev.

1 183m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 千曲川774 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

23 dept-equivalent regions (GADM L2)

15 more

30 intersecting protected areas

21 more protected areas

  • Omagari

    IUCN IV

    Prefectural Wildlife Protection Area

    6.71 km² overlap

  • Kimpozan

    IUCN IV

    Biocenosis Protected Forest

    3.00 km² overlap

  • Uminokuchi

    IUCN IV

    Prefectural Wildlife Protection Area

    2.25 km² overlap

  • Kitsugihara

    IUCN IV

    Prefectural Wildlife Protection Area

    2.13 km² overlap

  • Matsubara ko kogen

    IUCN IV

    Prefectural Wildlife Protection Area

    2.13 km² overlap

  • Tatehara

    IUCN IV

    Prefectural Wildlife Protection Area

    2.07 km² overlap

  • Shirakoma Kometsuga

    IUCN IV

    Rare Population Protected Forest

    1.73 km² overlap

  • Hiraofuji

    IUCN IV

    Prefectural Wildlife Protection Area

    1.65 km² overlap

  • Gosensui

    IUCN IV

    Prefectural Wildlife Protection Area

    1.64 km² overlap

  • Yatsugatake

    IUCN IV

    Biocenosis Protected Forest

    1.63 km² overlap

  • Mochizuki shonen shizenno ie

    IUCN IV

    Prefectural Wildlife Protection Area

    0.99 km² overlap

  • Chichibu renpo

    IUCN IV

    Prefectural Wildlife Protection Area

    0.83 km² overlap

  • Washibasan

    IUCN IV

    Prefectural Wildlife Protection Area

    0.69 km² overlap

  • Tengu yama

    IUCN V

    Prefectural Nature Conservation Area

    0.40 km² overlap

  • Shinkai sansha jinja

    IUCN V

    Local Environment Conservation Area(Nagano)

    0.29 km² overlap

  • Shinkaisanshajinja

    IUCN IV

    Prefectural Wildlife Protection Area

    0.29 km² overlap

  • Kurofuyama Karamatsu

    IUCN IV

    Rare Population Protected Forest

    0.28 km² overlap

  • Kabutoiwa

    IUCN IV

    Rare Population Protected Forest

    0.19 km² overlap

  • Kozu

    IUCN IV

    Prefectural Wildlife Protection Area

    0.17 km² overlap

  • Okuchichibu

    IUCN IV

    Prefectural Wildlife Protection Area

    0.13 km² overlap

  • Akaya Konara To Idenshigen

    IUCN IV

    Rare Population Protected Forest

    0.13 km² overlap

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

Species present

3 687 distinct species · 80 796 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

80 796 obs · 49 cellules
Obs. / cellule
≥ 17 431
3 042–17 430
1 226–3 041
614–1 225
< 614

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

Ecological tissue

Sample of 31 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 千曲川 : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 66 interactions GloBI sur 3 types (connectance 10.5%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
66
Connectance
0.105
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°

7,7°C

Annual rain

1 469mm

Moisture idx (CMI)

0,36

Runoff

869mm/an

PET

887mm

AET

861mm

Mean slope

11,4°

Water table

383cm

Forest

73%

Crops

13%

Urban

13%

Protected

25%

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