Mehadia (Hungarian: Mehádia; German: Mehadia; Turkish: Mehadiye) is a small market town and commune in Caraş-Severin County, Romania. It lies on the European route E70, in the Cerna River valley. The town is located on the site of the ancient Roman colony Ad Mediam and was noted for its Hercules baths. It had a population of 2,492 in 1900, and of 4,474 in 2002. The commune is prone to major recurring flooding. The 1838 floods destroyed some 2000 houses in the valley and the 1841 floods in Mehadia were also devastating.