// Workers AI · dad joke modeWhat did the Sillaro river say? I'm sill-ar flowing.

Sillaro
Sillaro descending towards the Po valley
Location of the Sillaro in Italy
Location
Country	Italy
Physical characteristics
Source
• location	Sasso di San Zenobi, Tuscany
• elevation	about 800 m (2,600 ft) above sea level
Mouth	Reno
• location	Emilia-Romagna
• coordinates	44.5786°N 11.8714°E / 44.5786; 11.8714
• elevation	14 m (46 ft) above sea level
Length	66 km (41 mi)
Basin size	about 300 km2 (120 mi2)
Discharge
• average	4 m3/s (140 cu ft/s)
Basin features
Progression	Reno→ Adriatic Sea

The Sillaro (Emilian: Sàrrel; Romagnol: Sélar; Latin: Silarus) is a 66-kilometre (41 mi) long Italian stream, whose headwaters are by the village of Piancaldoli, Province of Florence, in Tuscany. It runs northeast through the city of Castel San Pietro Terme, Province of Bologna, in Emilia-Romagna. The river runs through a short extension of the province of Ravenna extending into the Province of Bologna before re-entering the Province of Bologna. It then forms the border between the Province of Ferrara and the Province of Ravenna for a short distance before entering the Province of Ferrara. The river ends as a tributary of the Reno River by the village of San Biagio di Argenta and near where the Idice enters the Reno. Historically, its course formed the boundary between Emilia and Romagna.