The Rătășel is a left

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

Crișul Negru The Crișul Negru (Black Criș) ( Romanian), () is a river in western Romania (Transylvania) and south-eastern Hungary (Békés County). The river has its source in the western Apuseni Mountains of Romania. Flowing through the Romanian towns of � ...

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 Crișul Negru near Tăut. Its length is and its basin size is .

References

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