HydroBASINS lev08 watershed · #2080532380

Bassin de Toce

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 11 administrative regions across 2 countries : Aosta, Brig, Goms, Leventina, Locarno +6

24% lakePfafstetter: 21406602

Sub-basin area

1 883km²

Upstream area

1 883,1km²

Discharge

91,96m³/s

Mean elev.

1 514m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Fiume Ticino1838 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

11 dept-equivalent regions (GADM L2)

Verbano-Cusio-Ossola
Piemonte · Italy
1614.2 km²
85.5% of basin
Brig
Valais · Switzerland
177.4 km²
9.4% of basin
Novara
Piemonte · Italy
54.3 km²
2.9% of basin
Visp
Valais · Switzerland
19.5 km²
1.0% of basin
Vercelli
Piemonte · Italy
8.0 km²
0.4% of basin
Goms
Valais · Switzerland
6.6 km²
0.3% of basin
Vallemaggia
Ticino · Switzerland
4.0 km²
0.2% of basin
Raron
Valais · Switzerland
2.1 km²
0.1% of basin

3 moreFull L2 list

Leventina1.2 km² · 0.1%
Locarno0.4 km² · 0.0%
Aosta0.0 km² · 0.0%

30 intersecting protected areas

Alte Valli Anzasca, Antrona e Bognanco
IUCN Not Reported
Special Protection Area (Birds Directive)
215.82 km² overlap
Val Formazza
IUCN Not Reported
Special Protection Area (Birds Directive)
202.50 km² overlap
Alpi Veglia e Devero - Monte Giove
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
150.11 km² overlap
Alpi Veglia e Devero - Monte Giove
IUCN Not Reported
Special Protection Area (Birds Directive)
150.11 km² overlap
Parco naturale dell'Alpe Veglia e dell'Alpe Devero
IUCN IV
Regional/Provincial Nature Park
84.86 km² overlap
Monte Rosa
IUCN Not Reported
Special Protection Area (Birds Directive)
84.49 km² overlap
Alta Val Formazza
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
55.91 km² overlap
Alta Val Strona e Val Segnara
IUCN Not Reported
Special Protection Area (Birds Directive)
39.62 km² overlap
Parco nazionale della Val Grande
IUCN II
National Park
33.00 km² overlap

21 more protected areassorted by overlap area

Fiume Toce
IUCN Not Reported
Special Protection Area (Birds Directive)
26.65 km² overlap
Simplon Süd
IUCN Not Assigned
Forest Reserves
11.80 km² overlap
Greto Torrente Toce tra Domodossola e Villadossola
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
7.47 km² overlap
Campello Monti
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
5.13 km² overlap
Lago di Mergozzo e Mont'Orfano
IUCN Not Reported
Special Protection Area (Birds Directive)
4.84 km² overlap
Riserva naturale speciale Fondo Toce
IUCN IV
Regional/Provincial Nature Reserve
3.61 km² overlap
Fondo Toce
IUCN Not Reported
Special Protection Area (Birds Directive)
3.61 km² overlap
Fondo Toce
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
3.61 km² overlap
Boleto - M.te Avigno
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
3.36 km² overlap
Lago di Mergozzo
IUCN Not Reported
Site of Community Importance (Habitats Directive)
1.98 km² overlap
Val Grande
IUCN Not Reported
Special Protection Area (Birds Directive)
1.90 km² overlap
Val Grande
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
1.90 km² overlap
Grundberg - Almagellertal
IUCN Not Assigned
Private Nature Reserves
1.78 km² overlap
Alta Val Sesia
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
1.19 km² overlap
Parco naturale Alta Valsesia
IUCN IV
Regional/Provincial Nature Park
1.08 km² overlap
Alta Valsesia e Valli Otro, Vogna, Gronda, Artogna e Sorba
IUCN Not Reported
Special Protection Area (Birds Directive)
1.08 km² overlap
Val Mastallone
IUCN Not Reported
Special Protection Area (Birds Directive)
0.39 km² overlap
Val Mastallone
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.39 km² overlap
Riserva naturale speciale del Colle della Torre di Buccione
IUCN IV
Regional/Provincial Nature Reserve
0.33 km² overlap
Riserva naturale Monte Mottac
IUCN Ia
State Nature Reserve
0.27 km² overlap
Riserva naturale speciale del Sacro Monte Calvario di Domodossola
IUCN V
Regional/Provincial Nature Reserve
0.27 km² overlap

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

Species present

7 440 distinct species · 160 057 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 21 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

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Toce : 18 espèces + 3 bulles famille, 20 interactions GloBI documentées sur 5 types (connectance 9.5%, filtre Serrano α=0.2). Les 3 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées

Interactions affichées

Connectance

0.095

Patrimoniales

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 452mm

Moisture idx (CMI)

0,55

Runoff

1 381mm/an

PET

595mm

AET

574mm

Mean slope

25,9°

Water table

869cm

Forest

68%

Crops

Urban

Protected

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