HydroBASINS lev08 watershed · #2080048220
Bassin de la Gravona
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 : Corse-du-Sud, Haute-Corse
Sub-basin area
3 614,4km²
Upstream area
3 614,4km²
Discharge
2,36m³/s
Mean elev.
483m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 1795.4 km²49.6% of basin
- 1707.5 km²47.2% of basin
155 communes (GADM L5)Available for FRA, RWA
- Calenzana184.60 km²100% commune
- Galéria136.73 km²100% commune
- Santo-Pietro-di-Tenda126.20 km²100% commune
- Bastelica121.78 km²95% commune
- Manso120.28 km²100% commune
- Ajaccio83.43 km²100% commune
- Bocognano70.87 km²100% commune
- Évisa67.16 km²100% commune
- Coti-Chiavari64.49 km²100% commune
- Piana63.86 km²100% commune
- Marignana56.31 km²100% commune
- Osani53.61 km²100% commune
- Vico53.36 km²100% commune
- San-Gavino-di-Tenda50.80 km²100% commune
- Palasca50.24 km²100% commune
- Cargèse47.88 km²100% commune
- Borgo47.23 km²98% commune
- Pastricciola46.74 km²100% commune
- Guagno42.42 km²100% commune
- Serriera37.44 km²100% commune
- Ota37.31 km²100% commune
- Letia37.22 km²100% commune
- Pietrosella35.64 km²100% commune
- Appietto34.68 km²100% commune
- Albitreccia33.51 km²73% commune
- Tavera32.94 km²100% commune
- Calvi32.10 km²100% commune
- Coggia30.99 km²100% commune
- Cuttoli-Corticchiato30.41 km²100% commune
- Urtaca30.16 km²100% commune
- Alata29.99 km²100% commune
- Ucciani28.43 km²100% commune
- Rogliano27.88 km²100% commune
- Cauro27.78 km²100% commune
- Luri27.66 km²100% commune
- Novella27.20 km²89% commune
- Sarrola-Carcopino27.13 km²100% commune
- Biguglia26.85 km²100% commune
- Soccia26.82 km²99% commune
- Balogna26.70 km²100% commune
- Oletta26.38 km²100% commune
- Pietracorbara26.09 km²100% commune
- Ocana25.95 km²100% commune
- Sisco25.36 km²100% commune
- Tolla25.22 km²100% commune
- Peri24.04 km²100% commune
- Vero23.90 km²100% commune
- Grosseto-Prugna23.80 km²75% commune
- Calcatoggio23.28 km²100% commune
- Montegrosso22.89 km²100% commune
- Brando22.32 km²100% commune
- Sari-d'Orcino22.30 km²100% commune
- Olmeta-di-Capocorso21.83 km²100% commune
- Serra-di-Ferro21.76 km²66% commune
- Salice21.65 km²100% commune
- Murzo21.40 km²100% commune
- Meria21.07 km²100% commune
- Murato20.93 km²100% commune
- Cristinacce20.57 km²100% commune
- Piève20.31 km²100% commune
- Lumio20.20 km²100% commune
- Ersa20.17 km²100% commune
- Arbori20.12 km²100% commune
- Lama19.85 km²100% commune
- Lopigna19.84 km²100% commune
- Rosazia19.75 km²100% commune
- Bastia19.66 km²100% commune
- Furiani19.29 km²100% commune
- Partinello18.80 km²100% commune
- Barrettali18.69 km²100% commune
- Saint-Florent18.67 km²100% commune
- Bastelicaccia18.37 km²100% commune
- Speloncato17.92 km²100% commune
- Pietralba17.71 km²45% commune
- Patrimonio17.57 km²100% commune
- Olmeta-di-Tuda17.48 km²100% commune
- Canari16.99 km²100% commune
- Rutali16.99 km²99% commune
- Poggio-d'Oletta16.13 km²100% commune
- Orto16.03 km²100% commune
- Sorio15.76 km²100% commune
- Feliceto15.26 km²100% commune
- Farinole15.03 km²100% commune
- Cagnano14.98 km²100% commune
- Casaglione14.82 km²100% commune
- Carbuccia14.74 km²100% commune
- Olcani13.94 km²100% commune
- Morsiglia13.80 km²100% commune
- Zilia13.78 km²100% commune
- Eccica-Suarella13.58 km²100% commune
- Rezza13.51 km²100% commune
- Belgodère13.01 km²100% commune
- Santa-Maria-di-Lota12.98 km²100% commune
- Renno12.36 km²100% commune
- Occhiatana12.22 km²100% commune
- Poggiolo12.17 km²100% commune
- Azzana11.94 km²100% commune
- Afa11.81 km²100% commune
- Lento11.35 km²49% commune
- Villanova11.17 km²100% commune
- Monticello11.14 km²100% commune
- Barbaggio10.91 km²100% commune
- Tavaco10.72 km²100% commune
- Corbara10.39 km²100% commune
- Santa-Reparata-di-Balagna10.06 km²100% commune
- San-Martino-di-Lota9.69 km²100% commune
- Ogliastro9.52 km²100% commune
- Rapale9.52 km²100% commune
- Sant'Andréa-d'Orcino9.38 km²100% commune
- Aregno9.35 km²100% commune
- Ville-di-Paraso9.35 km²100% commune
- Nonza8.60 km²100% commune
- Arro8.55 km²100% commune
- Centuri8.31 km²100% commune
- Muro8.07 km²100% commune
- Ville-di-Pietrabugno7.49 km²100% commune
- Vallecalle7.26 km²100% commune
- Moncale7.20 km²100% commune
- Pino7.08 km²100% commune
- Lavatoggio6.82 km²100% commune
- Valle-di-Mezzana6.69 km²100% commune
- Lucciana6.10 km²21% commune
- Ambiegna5.87 km²100% commune
- Tomino5.60 km²100% commune
- Nessa5.36 km²100% commune
- Cognocoli-Monticchi4.76 km²13% commune
- Ciamannacce4.76 km²19% commune
- Tasso4.52 km²28% commune
- Sant'Antonino4.34 km²100% commune
- Cannelle3.76 km²100% commune
- Cateri3.26 km²100% commune
- Avapessa3.01 km²100% commune
- Pioggiola2.70 km²14% commune
- L'Île-Rousse2.62 km²100% commune
- Guitera-les-Bains2.60 km²17% commune
- Corte2.16 km²1% commune
- Vivario2.15 km²3% commune
- Bigorno2.00 km²23% commune
- Albertacce1.89 km²2% commune
- Pigna1.80 km²100% commune
- Algajola1.79 km²100% commune
- Frasseto1.67 km²10% commune
- Olmi-Cappella1.63 km²3% commune
- Scolca1.48 km²22% commune
- Campitello0.96 km²11% commune
- Costa0.93 km²100% commune
- Ghisoni0.91 km²1% commune
- Asco0.88 km²1% commune
- Mausoléo0.46 km²2% commune
- Santa-Maria-Siché0.22 km²2% commune
- Venaco0.18 km²0% commune
- Quasquara0.03 km²1% commune
- Vignale0.02 km²0% commune
- Palneca0.01 km²0% commune
- Casamaccioli0.00 km²0% commune
30 intersecting protected areas
Corse
IUCN VRegional Nature Park
1490.62 km² overlap
Rivière et vallée du Fango
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
189.44 km² overlap
Golfe de Porto et presqu'île de Scandola
IUCN Not ReportedSpecial Protection Area (Birds Directive)
112.48 km² overlap
Special Areas of Conservation (Habitats Directive)
110.36 km² overlap
Gulf of Porto: Calanche of Piana, Gulf of Girolata, Scandola Reserve
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
102.63 km² overlap
Agriates
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
84.56 km² overlap
Agriate
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
59.47 km² overlap
Forêts Territoriales de Corse
IUCN Not ReportedSpecial Protection Area (Birds Directive)
57.14 km² overlap
Cap Corse Et Agriate
IUCN VMarine Nature Park
37.87 km² overlap
21 more protected areassorted by overlap area
Vallée du Regino
IUCN Not ReportedSpecial Protection Area (Birds Directive)
37.14 km² overlap
Massif du Renoso
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
34.92 km² overlap
Cap Corse nord et île Finocchiarola, Giraglia et Capense (côte de Macinaggio à Centuri)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
26.80 km² overlap
Massif du Tenda et forêt de Stella
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
21.77 km² overlap
Iles Sanguinaires, golfe d'Ajaccio
IUCN Not ReportedSpecial Protection Area (Birds Directive)
20.94 km² overlap
Golfe d'Ajaccio
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
20.56 km² overlap
Étang de Biguglia
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
19.79 km² overlap
Massif montagneux du Cinto
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
19.37 km² overlap
Étang de Biguglia
IUCN Not ReportedSpecial Protection Area (Birds Directive)
18.08 km² overlap
Etang de Biguglia
IUCN Not ReportedWetland of International Importance (Ramsar Site)
18.08 km² overlap
Etang De Biguglia
IUCN IVCorsican Nature Reserve
18.08 km² overlap
Haute vallée du Fium Grossu
IUCN Not ReportedSpecial Protection Area (Birds Directive)
14.91 km² overlap
Capo di feno
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
14.68 km² overlap
Plateau du Cap Corse
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
13.98 km² overlap
Scandola
IUCN IVCorsican Nature Reserve
12.97 km² overlap
Haute vallée du Fango
IUCN Not ReportedSpecial Protection Area (Birds Directive)
12.66 km² overlap
Plateau du Cap Corse
IUCN Not ReportedSpecial Protection Area (Birds Directive)
11.36 km² overlap
Cirque de Bonifatu
IUCN Not ReportedSpecial Protection Area (Birds Directive)
11.11 km² overlap
Capu Rossu , Scandola, revellata, Calvi
IUCN Not ReportedSpecial Protection Area (Birds Directive)
10.82 km² overlap
Iles Finocchiarola et Côte Nord
IUCN Not ReportedSpecial Protection Area (Birds Directive)
9.29 km² overlap
Pointe du cap corse
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
7.74 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
12 759 distinct species · 610 065 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 la Gravona : 24 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 59 interactions GloBI sur 5 types (connectance 11.2%, filtre Serrano α=0.2). 9 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°
13,1°C
Annual rain
754mm
Moisture idx (CMI)
-0,05
Runoff
484mm/an
PET
801mm
AET
551mm
Mean slope
16,1°
Water table
609cm
Forest
44%
Crops
3%
Urban
2%
Protected
34%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)