the Danube entered the Cerna's mouth following the construction of the Iron Gates I dam, which caused water levels to rise.

Tributaries

The most important tributary of the Cerna is the Belareca. The following rivers are tributaries of the river Cerna (from source to mouth):

*Left: Arsaca, Jelerau, Valea Mare
*Right: Sturu, Maneasa, Valea Carbunelui,