HydroBASINS lev08 watershed · #2080550180
Bassin de Trebbia
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, Genova, Parma, Pavia, Piacenza
Sub-basin area
1 136,5km²
Upstream area
1 136,5km²
Discharge
26,69m³/s
Mean elev.
711m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- Piacenza777.1 km²68.2% of basin
- 326.8 km²28.7% of basin
- 32.8 km²2.9% of basin
- 1.4 km²0.1% of basin
- Parma0.8 km²0.1% of basin
23 intersecting protected areas
Special Areas of Conservation (Habitats Directive)
59.70 km² overlap
Val Boreca, Monte Lesima
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
47.15 km² overlap
Parco dell'Aveto
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
44.94 km² overlap
Monte Dego, Monte Veri, Monte delle Tane
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
29.95 km² overlap
Lago Marcotto - Roccabruna - Gifarco - Lago della Nave
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
21.61 km² overlap
Parco dell'Antola
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
18.62 km² overlap
Regional/Provincial Nature Park
17.79 km² overlap
Basso Trebbia
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
13.37 km² overlap
Basso Trebbia
IUCN Not ReportedSpecial Protection Area (Birds Directive)
13.37 km² overlap
14 more protected areassorted by overlap area
Regional/Provincial Nature Park
13.17 km² overlap
Lago Brugneto
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.68 km² overlap
Monte Ramaceto
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.27 km² overlap
Le Torraie - Monte Lesima
IUCN Not ReportedSite of Community Importance (Habitats Directive)
5.98 km² overlap
Fiume Trebbia da Perino a Bobbio
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.52 km² overlap
Pietra Parcellara e Pietra Perduca
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.42 km² overlap
Meandri di San Salvatore
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.53 km² overlap
Fiume Po da Rio Boriacco a Bosco Ospizio
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.21 km² overlap
Fiume Po da Rio Boriacco a Bosco Ospizio
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.21 km² overlap
Monte Nero, Monte Maggiorasca, La Ciapa Liscia
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.87 km² overlap
Massiccio dell'Antola - Monte Carmo - Monte Legnà
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.69 km² overlap
Monte Penna, Monte Trevine, Groppo, Groppetto
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.31 km² overlap
Sassi Neri - Pietra Corva
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.18 km² overlap
State Nature Reserve
0.15 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 604 distinct species · 37 050 observations
Source: GBIF Occurrence snapshot 2026-05-01.
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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Trebbia : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 73 interactions GloBI sur 3 types (connectance 15.7%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
9,8°C
Annual rain
950mm
Moisture idx (CMI)
0,17
Runoff
737mm/an
PET
780mm
AET
620mm
Mean slope
13,9°
Water table
418cm
Forest
68%
Crops
18%
Urban
2%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)