The Topa 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 Holod 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 Holod near Copăceni.Topa (jud. Bihor)
e-calauza.ro Its length is and its basin size is .

Tributaries

The following rivers are tributaries to the Topa: *Left: Miniș, Poiana, Rogoazele,

Vârciorog Vârciorog () is a commune in Bihor County, Crișana, Romania. It is composed of four villages: Fâșca (''Várfancsika''), Surducel (''Kisszurdok''), Șerghiș (''Serges''), and Vârciorog. The commune is located in the central part of Bihor Co ...

, Valea Copilului,

Valea lui Vasile The Valea lui Vasile is a left tributary of the river Topa 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 ...

*Right: Valea Codrului, Pietroasa, Valea Mare, Cârpeștii Mici, Valea Florii

References

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