HydroBASINS lev08 watershed · #2080047410

Bassin de Fiume Simeto

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 6 administrative regions : Caltanissetta, Catania, Enna, Messina, Palermo +1

3% lakePfafstetter: 21900028

Sub-basin area

4 221,2km²

Upstream area

4 221,4km²

Discharge

18,74m³/s

Mean elev.

532m

Administrative coverage

6 dept-equivalent regions (GADM L2)

Catania
Sicily · Italy
1954.3 km²
46.3% of basin
Enna
Sicily · Italy
1842.3 km²
43.6% of basin
Messina
Sicily · Italy
287.0 km²
6.8% of basin
Syracuse
Sicily · Italy
116.5 km²
2.8% of basin
Palermo
Sicily · Italy
22.3 km²
0.5% of basin
Caltanissetta
Sicily · Italy
0.8 km²
0.0% of basin

30 intersecting protected areas

Parco dei Nebrodi
IUCN IV
Regional/Provincial Nature Park
257.34 km² overlap
Parco dell' Etna
IUCN IV
Regional/Provincial Nature Park
256.93 km² overlap
Monti Nebrodi
IUCN Not Reported
Special Protection Area (Birds Directive)
249.71 km² overlap
Serra del Re, Monte Soro e Biviere di Cesarò
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
120.15 km² overlap
Mount Etna
IUCN Not Applicable
World Heritage Site (natural or mixed)
92.44 km² overlap
Lago di Pozzillo
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
33.96 km² overlap
Fascia altomontana dell'Etna
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
32.08 km² overlap
Monte Sambughetti, Monte Campanito
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
28.04 km² overlap
Sciare di Roccazzo della Bandiera
IUCN Not Reported
Special Protection Area (Birds Directive)
27.62 km² overlap

21 more protected areassorted by overlap area

Sciare di Roccazzo della Bandiera
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
27.62 km² overlap
Pineta di Adrano e Biancavilla
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
23.80 km² overlap
Vallone Rossomanno
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
23.58 km² overlap
Contrada Valanghe
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
23.40 km² overlap
Monte Chiapparo
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
18.78 km² overlap
Bosco di Sperlinga, Alto Salso
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
17.82 km² overlap
Pizzo Fau, Monte Pomiere, Pizzo Bidi e Serra della Testa
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
16.61 km² overlap
Riserva naturale orientata Sambuchetti-Campanito
IUCN IV
Regional/Provincial Nature Reserve
16.33 km² overlap
Biviere di Lentini, tratto mediano e foce del Fiume Simeto e area antistante la foce
IUCN Not Reported
Special Protection Area (Birds Directive)
15.60 km² overlap
Lago di Ancipa
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
15.20 km² overlap
Monte Pelato
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
14.87 km² overlap
Forre laviche del Fiume Simeto
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
13.78 km² overlap
Piano dei Grilli
IUCN Not Reported
Special Protection Area (Birds Directive)
12.40 km² overlap
Piano dei Grilli
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
12.40 km² overlap
Lago Ogliastro
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
11.37 km² overlap
Foce del Fiume Simeto e Lago Gornalunga
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
9.30 km² overlap
Lago Gurrida e Sciare di S. Venera
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
9.17 km² overlap
Poggio S. Maria
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
8.07 km² overlap
Monte Zimmara (Gangi)
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
8.01 km² overlap
Tratto di Pietralunga del Fiume Simeto
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
7.48 km² overlap
Riserva naturale orientata Rossomanno-Grottascura-Bellia
IUCN IV
Regional/Provincial Nature Reserve
7.46 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

3 006 distinct species · 38 828 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 43 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Fiume Simeto : 31 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 80 interactions GloBI sur 3 types (connectance 8.9%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.089

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

14,9°C

Annual rain

518mm

Moisture idx (CMI)

-0,46

Runoff

151mm/an

PET

984mm

AET

435mm

Mean slope

7,3°

Water table

374cm

Forest

Crops

Urban

Protected

13%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)