HydroBASINS lev08 watershed · #2080578770
Bassin de Arno
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 3 administrative regions : Arezzo, Florence, Forli' - Cesena
Sub-basin area
872,4km²
Upstream area
872,4km²
Discharge
12,2m³/s
Mean elev.
703m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 862.8 km²98.7% of basin
- 11.1 km²1.3% of basin
- 0.1 km²0.0% of basin
30 intersecting protected areas
National Park
143.03 km² overlap
Foreste Alto Bacino dell'Arno
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
91.62 km² overlap
Alta Vallesanta
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
49.48 km² overlap
Foreste di Camaldoli e Badia Prataglia
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
27.34 km² overlap
Camaldoli, Scodella, Campigna, Badia Prataglia
IUCN Not ReportedSpecial Protection Area (Birds Directive)
17.03 km² overlap
Riserva naturale Camaldoli
IUCN IaState Nature Reserve
10.40 km² overlap
Brughiere dell'Alpe di Poti
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.48 km² overlap
Brughiere dell'Alpe di Poti
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.48 km² overlap
Pascoli montani e cespuglieti del Pratomagno
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.69 km² overlap
21 more protected areassorted by overlap area
Pascoli montani e cespuglieti del Pratomagno
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.69 km² overlap
Monte Calvano
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.66 km² overlap
La Verna - Monte Penna
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.02 km² overlap
State Nature Reserve
2.73 km² overlap
Crinale Monte Falterona - Monte Falco - Monte Gabrendo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.04 km² overlap
Foresta di Campigna, Foresta la Lama, Monte Falco
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.69 km² overlap
Foresta di Campigna, Foresta la Lama, Monte Falco
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.69 km² overlap
Giogo Seccheta
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.66 km² overlap
Riserva naturale Scodella
IUCN IaState Nature Reserve
0.58 km² overlap
Riserva naturale Campigna
IUCN IaState Nature Reserve
0.42 km² overlap
Riserva naturale Zuccaia
IUCN IaState Nature Reserve
0.30 km² overlap
Vallombrosa e Bosco di S. Antonio
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.12 km² overlap
Regional/Provincial Nature Reserve
0.11 km² overlap
Riserva naturale Vallombrosa
IUCN IaState Nature Reserve
0.10 km² overlap
Alta Valle del Tevere
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.08 km² overlap
Ancient and Primeval Beech Forests of the Carpathians and Other Regions of Europe
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
0.04 km² overlap
Monte Zuccherodante
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.04 km² overlap
State Nature Reserve
0.02 km² overlap
Monte Gemelli, Monte Guffone
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.01 km² overlap
Monte Gemelli, Monte Guffone
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.01 km² overlap
Ponte a Buriano e Penna
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 266 distinct species · 70 487 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Arno : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 82 interactions GloBI sur 5 types (connectance 13.8%, 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°
10,5°C
Annual rain
856mm
Moisture idx (CMI)
0,04
Runoff
430mm/an
PET
821mm
AET
611mm
Mean slope
12,9°
Water table
456cm
Forest
73%
Crops
7%
Urban
2%
Protected
16%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)