HydroBASINS lev08 watershed · #2080548410
Bassin de Roggia Busca
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 : Alessandria, Novara, Pavia, Vercelli
Sub-basin area
703,4km²
Upstream area
2 841,7km²
Discharge
80,37m³/s
Mean elev.
154m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Torrente Elvo1080 km²
- Bassin de Canale Cavour168 km²
4 dept-equivalent regions (GADM L2)
- 340.4 km²48.3% of basin
- 276.5 km²39.2% of basin
- 82.6 km²11.7% of basin
- 5.5 km²0.8% of basin
20 intersecting protected areas
Risaie della Lomellina
IUCN Not ReportedSpecial Protection Area (Birds Directive)
37.34 km² overlap
Baraggia di Piano Rosa
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.93 km² overlap
Regional/Provincial Nature Reserve
11.87 km² overlap
Risaie vercellesi
IUCN Not ReportedSpecial Protection Area (Birds Directive)
9.34 km² overlap
Palude di Casalbeltrame
IUCN Not ReportedSpecial Protection Area (Birds Directive)
6.52 km² overlap
Palude di Casalbeltrame
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.52 km² overlap
Regional/Provincial Nature Reserve
6.51 km² overlap
Fiume Po - tratto vercellese alessandrino
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.13 km² overlap
Monte Fenera
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.84 km² overlap
11 more protected areassorted by overlap area
Other Protected Natural Regional Areas
2.83 km² overlap
Garzaie novaresi
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.99 km² overlap
Confluenza Po - Sesia - Tanaro
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.31 km² overlap
Other Protected Natural Regional Areas
1.30 km² overlap
Lama del Badiotto e Garzaia della Brarola
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.02 km² overlap
Regional/Provincial Nature Reserve
0.80 km² overlap
Lame del Sesia e Isolone di Oldenico
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.04 km² overlap
Lame del Sesia e Isolone di Oldenico
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.04 km² overlap
Regional/Provincial Nature Reserve
0.03 km² overlap
Garzaia della Rinalda
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.00 km² overlap
Other Protected Natural Regional Areas
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 252 distinct species · 54 926 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 Roggia Busca : 20 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 54 interactions GloBI sur 2 types (connectance 14.3%, filtre Serrano α=0.2). 8 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°
12,0°C
Annual rain
944mm
Moisture idx (CMI)
0,00
Runoff
789mm/an
PET
939mm
AET
729mm
Mean slope
0,3°
Water table
20cm
Forest
8%
Crops
80%
Urban
5%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)