HydroBASINS lev08 watershed · #2080015740
Bassin de Fiume Fiora
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 : Grosseto, Siena, Viterbo
Sub-basin area
831,6km²
Upstream area
831,9km²
Discharge
8,45m³/s
Mean elev.
364m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 425.1 km²51.0% of basin
- 398.9 km²47.9% of basin
- 9.0 km²1.1% of basin
24 intersecting protected areas
Alto corso del Fiume Fiora
IUCN Not ReportedSpecial Protection Area (Birds Directive)
71.09 km² overlap
Alto corso del Fiume Fiora
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
71.09 km² overlap
Selva del Lamone e Monti di Castro
IUCN Not ReportedSpecial Protection Area (Birds Directive)
56.55 km² overlap
Selva del Lamone
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
30.63 km² overlap
Cono vulcanico del Monte Amiata
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
20.15 km² overlap
Regional/Provincial Nature Reserve
19.97 km² overlap
Monti di Castro
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
15.12 km² overlap
Caldera di Latera
IUCN Not ReportedSpecial Protection Area (Birds Directive)
12.16 km² overlap
Caldera di Latera
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
12.16 km² overlap
15 more protected areassorted by overlap area
Sistema fluviale Fiora - Olpeta
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.40 km² overlap
Monte Penna, Bosco della Fonte e Monte Civitella
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.10 km² overlap
Riserva naturale Monte Penna
IUCN IVRegional/Provincial Nature Reserve
5.49 km² overlap
Foreste del Siele e del Pigelleto di Piancastagnaio
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.17 km² overlap
Monte Labbro e alta valle dell'Albegna
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.17 km² overlap
Monte Labbro e alta valle dell'Albegna
IUCN Not ReportedSpecial Protection Area (Birds Directive)
5.17 km² overlap
Riserva naturale Pigelleto
IUCN IVRegional/Provincial Nature Reserve
4.76 km² overlap
Riserva naturale Montauto
IUCN IVRegional/Provincial Nature Reserve
1.87 km² overlap
Lago di Mezzano
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.49 km² overlap
Oasi di Vulci
IUCN IVOther Protected Natural Regional Areas
1.29 km² overlap
Il Crostoletto
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.41 km² overlap
Regional/Provincial Nature Reserve
0.38 km² overlap
Regional/Provincial Nature Reserve
0.19 km² overlap
Vallerosa
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.14 km² overlap
Monterozzi
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 313 distinct species · 16 919 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Fiume Fiora : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 115 interactions GloBI sur 5 types (connectance 13.4%, 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°
13,8°C
Annual rain
632mm
Moisture idx (CMI)
-0,32
Runoff
299mm/an
PET
931mm
AET
533mm
Mean slope
5,8°
Water table
315cm
Forest
27%
Crops
26%
Urban
0%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)