Sió is a river in central Hungary. It is the outlet of Lake Balaton. It flows out of the lake in the city Siófok. It flows along the city Szekszárd, and a few km east of this city it flows into the river Danube. The river Sió flows through the Hungarian counties Somogy, Fejér and Tolna.

Rivers of Hungary | Tributaries of the Danube

Sió