Tressa (river)

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Tressa
Location
Country	Italy
Physical characteristics
Mouth	Arbia
• coordinates	43°15′17″N 11°23′52″E / 43.25478°N 11.39767°E / 43.25478; 11.39767Coordinates: 43°15′17″N 11°23′52″E / 43.25478°N 11.39767°E / 43.25478; 11.39767
Basin features
Progression	Ombrone→ Tyrrhenian Sea

The Tressa is a torrent in Tuscany, central Italy, a tributary of the river Arbia. It's 17 kilometer long and its source is located near Marciano, in the comune of Siena. It flows across the territory of Monteroni d'Arbia and then into the river Arbia near Ponte a Tressa.