The
Cerna is a river in
Romania. The Cerna has its source on the south-east side of the
Godeanu Mountains and flows into the
Danube near the town
Orșova. The upper reach of the river is sometimes called
Cernișoara. With a basin of 1433 square km and a length of 84 km, it carves an erosive tectonic valley with numerous gorges, quite deep sometimes. There is a man-made lake on it (Tierna), just before it crosses the
Băile Herculane spa, to perpetuate the old toponimic od Dierna. The upper course of the Cerna is part of the Domogled-Valea Cernei national park. The Cerna flows through the villages and towns
Cerna-Sat,
Ţaţu,
Băile Herculane,
Pecinişca,
Bârza,
Topleţ,
Coramnic and
Orșova.