The Cioiana is a left

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or 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 drain the surrounding drai ...

of the river Jiu in

Romania Romania ( ; ro, România ) is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern, and Southeast Europe, Southeastern Europe. It borders Bulgaria to the south, Ukraine to the north, Hungary to the west, S ...

. It discharges into the Jiu in Peșteana-Jiu.Cioiana (jud. Gorj)
e-calauza.ro Its length is and its basin size is .

References

Rivers of Romania Rivers of Gorj County {{Gorj-river-stub