The Ban 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 river Crasna 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 discharges into the Crasna in the town Crasna.Banul / Valea Banului (jud. Salaj)
e-calauza.ro Its length is and its basin size is .

References

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