The Bodva is a 110-km long river in Slovakia and Hungary. Its source is in the Slovak Ore Mountains. The river crosses the border with Hungary near Turňa nad Bodvou, and flows into the river Sajó in Boldva, north of Miskolc. Within Slovakia, its length is 47 km (29 mi) and its basin size is 866 km2 (334 sq mi). Two of its tributaries are the Turňa and the Ida.