Ontologia

HydroBASINS lev08 watershed · #2080527230

Bassin de Maggia

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 4 administrative regions across 2 countries : Leventina, Locarno, Vallemaggia, Verbano-Cusio-Ossola

2% lakePfafstetter: 21406606

Sub-basin area

930,2km²

Upstream area

930,2km²

Discharge

45,51m³/s

Mean elev.

1 519m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Cannobino305 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

30 intersecting protected areas

21 more protected areas

  • Maggia

    IUCN Not Reported

    Emerald Network

    4.14 km² overlap

  • Maggia

    IUCN IV

    Federal Inventory of Alluvial Zones of National Importance

    4.06 km² overlap

  • Palagnedra

    IUCN Not Assigned

    Forest Reserves

    3.87 km² overlap

  • Arena

    IUCN Not Assigned

    Forest Reserves

    1.71 km² overlap

  • Parco Maia

    IUCN Not Assigned

    Forest Reserves

    0.99 km² overlap

  • Ghiacciaio del Basòdino W

    IUCN IV

    Federal Inventory of Alluvial Zones of National Importance

    0.84 km² overlap

  • Sonlèrt-Sabbione

    IUCN IV

    Federal Inventory of Alluvial Zones of National Importance

    0.81 km² overlap

  • Saleggio

    IUCN IV

    Federal Inventory of Alluvial Zones of National Importance

    0.71 km² overlap

  • Lanca Saligin

    IUCN IV

    Federal Inventory of Amphibian Spawning Areas of National Importance

    0.68 km² overlap

  • Somprei-Lovalt

    IUCN IV

    Federal Inventory of Alluvial Zones of National Importance

    0.63 km² overlap

  • Casone

    IUCN IV

    Federal Inventory of Dry Grasslands and Pastures of National Importance

    0.38 km² overlap

  • Alta Val Formazza

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.37 km² overlap

  • Piano di Arbigo

    IUCN IV

    Federal Inventory of Amphibian Spawning Areas of National Importance

    0.35 km² overlap

  • Alpe Pianascio

    IUCN IV

    Federal Inventory of Dry Grasslands and Pastures of National Importance

    0.27 km² overlap

  • Gaggio

    IUCN IV

    Federal Inventory of Dry Grasslands and Pastures of National Importance

    0.23 km² overlap

  • Mött di Tirman

    IUCN IV

    Federal Inventory of Alluvial Zones of National Importance

    0.23 km² overlap

  • Delta della Maggia

    IUCN IV

    Federal Inventory of Amphibian Spawning Areas of National Importance

    0.22 km² overlap

  • Campo Tencia

    IUCN IV

    Federal Hunting Reserves

    0.21 km² overlap

  • Val Grande

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    0.16 km² overlap

  • Val Grande

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.16 km² overlap

  • Parco nazionale della Val Grande

    IUCN II

    National Park

    0.12 km² overlap

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

Species present

11 126 distinct species · 465 628 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

465 628 obs · 39 cellules
Obs. / cellule
≥ 89 560
32 734–89 559
11 665–32 733
6 764–11 664
< 6 764

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

Ecological tissue

Sample of 32 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 Maggia : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 111 interactions GloBI sur 5 types (connectance 18.7%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
111
Connectance
0.187
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°

4,4°C

Annual rain

1 489mm

Moisture idx (CMI)

0,60

Runoff

1 497mm/an

PET

573mm

AET

570mm

Mean slope

28,4°

Water table

991cm

Forest

76%

Crops

3%

Urban

1%

Protected

2%

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