The Ardeu is a right

tributary A tributary, or an ''affluent'', is a stream or river that flows into a larger stream (''main stem'' or ''"parent"''), river, or a lake. A tributary does not flow directly into a sea or ocean. Tributaries, and the main stem river into which they ...

of the river Băcâia in

Romania Romania is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern and Southeast Europe. It borders Ukraine to the north and east, Hungary to the west, Serbia to the southwest, Bulgaria to the south, Moldova to ...

. It flows into the Băcâia in

Bozeș Geoagiu (, ) is a town in Hunedoara County, in the historical region of Transylvania, Romania. It administers ten villages: Aurel Vlaicu (until 1925 ''Binținți''; ''Bencenc''), Băcâia (''Bakonya''), Bozeș (''Bózes''), Cigmău (''Csigmó''), ...

. Its length is and its basin size is .

References

Rivers of Romania Rivers of Alba County Rivers of Hunedoara County {{Hunedoara-river-stub