The Rezu Mare 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 drainage ...

of the river Putna 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 flows into the Putna near

Tulgheș Tulgheș ( hu, Gyergyótölgyes or colloquially ''Tölgyes'', Hungarian pronunciation: , meaning "place with oak trees in Gyergyó") is a commune in Harghita County, Romania. It lies in eastern Transylvania. The commune is composed of four villag ...

. Its length is and its basin size is .

References

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