HydroBASINS lev08 watershed · #2080016250
Bassin du Paillon
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 2 administrative regions across 2 countries : Alpes-Maritimes, Imperia
Sub-basin area
410,9km²
Upstream area
410,9km²
Discharge
2,55m³/s
Mean elev.
443m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 380.9 km²92.5% of basin
- 16.2 km²3.9% of basin
39 communes (GADM L5)Available for FRA, RWA
- Nice53.10 km²71% commune
- Peille41.37 km²97% commune
- Lucéram33.70 km²52% commune
- Contes19.47 km²100% commune
- Coaraze17.28 km²99% commune
- Tourrette-Levens16.35 km²98% commune
- La Trinité15.34 km²100% commune
- Menton14.30 km²100% commune
- Castellar12.30 km²99% commune
- Blausasc10.22 km²100% commune
- L'Escarène10.13 km²100% commune
- Roquebrune-Cap-Martin9.75 km²100% commune
- Sainte-Agnès9.70 km²100% commune
- Èze9.45 km²100% commune
- Berre-les-Alpes9.29 km²100% commune
- Peillon8.94 km²100% commune
- Châteauneuf-Villevieille8.49 km²100% commune
- La Turbie7.52 km²100% commune
- Cantaron7.34 km²100% commune
- Gorbio7.02 km²100% commune
- Bendejun6.07 km²100% commune
- Drap5.47 km²100% commune
- Castillon5.34 km²69% commune
- Villefranche-sur-Mer5.27 km²100% commune
- Falicon4.97 km²100% commune
- Duranus4.58 km²28% commune
- Touët-de-l'Escarène4.40 km²100% commune
- Levens4.38 km²15% commune
- Aspremont4.14 km²46% commune
- Saint-Jean-Cap-Ferrat3.10 km²100% commune
- Beausoleil2.89 km²100% commune
- Colomars2.87 km²48% commune
- Saint-André-de-la-Roche2.66 km²100% commune
- Cap-d'Ail2.36 km²100% commune
- Beaulieu-sur-Mer0.94 km²100% commune
- Castagniers0.23 km²3% commune
- Sospel0.14 km²0% commune
- Saint-Laurent-du-Var0.00 km²0% commune
- Saint-Blaise0.00 km²0% commune
23 intersecting protected areas
Vallée du Carei - collines de Castillon
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
33.55 km² overlap
Corniches de la Rivièra
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
16.08 km² overlap
Monte Grammondo - Torrente Bevera
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.58 km² overlap
Cap Ferrat
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.60 km² overlap
Falaises De La Riviera
IUCN IVBiotope Protection Order
4.07 km² overlap
Cap Martin
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.26 km² overlap
International significance Natural Marine Area
1.65 km² overlap
Biotope Protection Order
0.99 km² overlap
Vallons obscurs de Nice et de Saint Blaise
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.99 km² overlap
14 more protected areassorted by overlap area
Fondali Capo Mortola - San Gaetano
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.90 km² overlap
Capo Mortola
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.50 km² overlap
Le mont vinaigrier
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.32 km² overlap
Other Protected Natural Regional Areas
0.20 km² overlap
Réserve sous-marine du Larvotto
IUCN Not ReportedWetland of International Importance (Ramsar Site)
0.18 km² overlap
Biotope Protection Order
0.10 km² overlap
Mont alban
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.10 km² overlap
Castel d'Appio
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.09 km² overlap
Serre de la madone
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.08 km² overlap
National Park - Buffer zone/Area of adhesion
0.06 km² overlap
Basse Vallée du Var
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.04 km² overlap
Gorges de la Vésubie et du Var - mont Vial - mont Férion
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.01 km² overlap
Cap martin
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.01 km² overlap
Biotope Protection Order
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
9 355 distinct species · 671 116 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 du Paillon : 25 espèces reliées par 126 interactions GloBI sur 5 types (connectance 17.0%, filtre Serrano α=0.2). 14 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°
13,0°C
Annual rain
830mm
Moisture idx (CMI)
-0,02
Runoff
668mm/an
PET
851mm
AET
618mm
Mean slope
17,0°
Water table
552cm
Forest
45%
Crops
4%
Urban
38%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)