Kopaszi Dam, Dam in Budapest District XI, Hungary

Kopaszi Dam is a 900-metre-long embankment jutting into the Danube south of the Összekötő railway bridge, separating Lágymányosi Bay from the river. It forms part of a modern public park with restaurants and a playground, and the bay's water surface is enclosed by the dam, Andalgó Street and Vízpart Street.

The dam was conceived after the devastating 1838 flood and built between 1870 and 1876 to regulate the Danube through Budapest. This construction was part of a larger effort to control water flow and protect the growing city.

The dam area serves as a gathering place where people from the city walk, exercise, and spend time by the water throughout the day. Different sections provide both quiet corners and open spaces where locals naturally pass through and pause.

The park's main entrance is on Dombóvári út, a five-minute walk from the 1-es tram stop; the 154-es bus also stops at Infopark (Pázmány Péter sétány). Drivers can use the car park at the main gate, free for the first half hour, or the free parking at the end of Hengermalom út. The park is open 6–22 in winter and 6–2 in summer, and the whole area is under camera surveillance.

The name comes from the Kopaszi sandbank, a shoal in the Danube where drifting ice piled up and caused three-metre ice jams that blocked the river and led to regular spring ice floods. Regulating the river from 1870 to 1876 removed this hazard and created the bay.