HydroBASINS lev08 watershed · #2080553830

Bassin de Bormida di Millesimo

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 5 administrative regions : Alessandria, Asti, Cuneo, Genova, Savona

Pfafstetter: 21406802

Sub-basin area

2 589,6km²

Upstream area

2 589,6km²

Discharge

52,48m³/s

Mean elev.

435m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Tanaro214 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

Alessandria
Piemonte · Italy
1312.3 km²
50.6% of basin
Savona
Liguria · Italy
718.2 km²
27.7% of basin
Cuneo
Piemonte · Italy
231.4 km²
8.9% of basin
Asti
Piemonte · Italy
194.0 km²
7.5% of basin
Genova
Liguria · Italy
139.3 km²
5.4% of basin

30 intersecting protected areas

Capanne di Marcarolo
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
94.73 km² overlap
Capanne di Marcarolo
IUCN Not Reported
Special Protection Area (Birds Directive)
94.73 km² overlap
Parco naturale delle Capanne di Marcarolo
IUCN IV
Regional/Provincial Nature Park
94.54 km² overlap
Beigua - Monte Dente - Gargassa - Pavaglione
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
86.59 km² overlap
Monte Carmo - Monte Settepani
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
43.95 km² overlap
Parco naturale regionale del Beigua
IUCN V
Regional/Provincial Nature Park
39.84 km² overlap
Beigua - Turchino
IUCN Not Reported
Special Protection Area (Birds Directive)
29.25 km² overlap
Praglia - Pracaban - Monte Leco - Punta Martin
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
28.32 km² overlap
Langhe di Spigno Monferrato
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
25.14 km² overlap

21 more protected areassorted by overlap area

Bacino del Rio Miseria
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
20.96 km² overlap
Rocca dell'Adelasia
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
20.73 km² overlap
Ronco di Maglio
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
14.50 km² overlap
Zona di salvaguardia del Bosco delle Sorti - La Communa
IUCN V
Other Protected Natural Regional Areas
14.27 km² overlap
Monte Spinarda - Rio Nero
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
9.44 km² overlap
Foresta della Deiva - Torrente Erro
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
8.87 km² overlap
Piana Crixia
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
8.01 km² overlap
Parco naturale regionale di Piana Crixia
IUCN V
Regional/Provincial Nature Park
7.93 km² overlap
Bric Zerbi
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
6.97 km² overlap
Croce della Tia - Rio Barchei
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
5.80 km² overlap
Torrente Orba
IUCN Not Reported
Special Protection Area (Birds Directive)
5.06 km² overlap
Torrente Orba
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
5.06 km² overlap
Area protetta di interesse provinciale Monte Camulera
IUCN V
Other Protected Natural Regional Areas
4.90 km² overlap
Lago di Osiglia
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
4.09 km² overlap
Calanchi di Rigoroso, Sottovalle e Carrosio
IUCN Not Reported
Site of Community Importance (Habitats Directive)
3.39 km² overlap
Riserva naturale speciale del Torrente Orba
IUCN IV
Regional/Provincial Nature Reserve
2.62 km² overlap
Sorgenti del Belbo
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
2.54 km² overlap
Pian della Badia (Tiglieto)
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
2.50 km² overlap
Riserva naturale speciale delle Sorgenti del Belbo
IUCN IV
Regional/Provincial Nature Reserve
2.34 km² overlap
Area protetta di interesse provinciale Collina del Dego
IUCN V
Other Protected Natural Regional Areas
2.26 km² overlap
Area protetta di interesse provinciale Oasi Rocchetta Cairo
IUCN V
Other Protected Natural Regional Areas
1.86 km² overlap

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

Species present

5 352 distinct species · 99 129 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 34 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 Bormida di Millesimo : 25 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 75 interactions GloBI sur 5 types (connectance 13.4%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.134

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°

11,6°C

Annual rain

909mm

Moisture idx (CMI)

0,11

Runoff

646mm/an

PET

806mm

AET

634mm

Mean slope

10,3°

Water table

373cm

Forest

59%

Crops

23%

Urban

Protected

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