EntityQ14545381· pop 5· linked from 2 articlesTressaSign in to saveriver in Tuscany, Province of SienaConnectionsItalyCountrygeographic coordinate systemEntityTuscanyEntitySienaEntityTyrrhenian SeaEntitytributaryEntityriver mouthEntityMonteroni d'ArbiaEntityCentral ItalyEntitystreamEntityOmbroneEntityArbiaEntityPonte a TressaEntityCategoriesRivers of ItalyRivers of the Province of SienaTributaries of the Ombrone