Ontologia

HydroBASINS lev08 watershed · #2080526050

Bassin de l'Arve

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 across 3 countries : Aosta, Genève, Haute-Savoie, Martigny, Monthey +1

Pfafstetter: 21602660

Sub-basin area

1 969,7km²

Upstream area

1 969,7km²

Discharge

52,69m³/s

Mean elev.

1 367m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin du Rhône1357 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

6 dept-equivalent regions (GADM L2)

111 communes (GADM L5)

30 intersecting protected areas

  • Haut Giffre

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    156.51 km² overlap

  • Haut Giffre

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    122.93 km² overlap

  • Sixt-Passy

    IUCN IV

    National Nature Reserve

    93.48 km² overlap

  • Les Aravis

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    57.45 km² overlap

  • Les Aravis

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    57.45 km² overlap

  • Aiguilles Rouges

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    56.25 km² overlap

  • Contamines Montjoie - Miage - Tré la Tête

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    52.86 km² overlap

  • Contamines-Montjoie

    IUCN IV

    National Nature Reserve

    52.86 km² overlap

  • Massif du Bargy

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    38.54 km² overlap

21 more protected areas

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

Species present

12 125 distinct species · 1 159 187 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 159 187 obs · 55 cellules
Obs. / cellule
≥ 58 913
43 474–58 912
28 270–43 473
15 543–28 269
< 15 543

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

Ecological tissue

Sample of 33 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 l'Arve : 19 espèces reliées par 76 interactions GloBI sur 5 types (connectance 14.4%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
76
Connectance
0.144
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°

5,3°C

Annual rain

1 339mm

Moisture idx (CMI)

0,42

Runoff

848mm/an

PET

695mm

AET

615mm

Mean slope

19,3°

Water table

577cm

Forest

67%

Crops

6%

Urban

11%

Protected

11%

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