The Valea Boului (also known as ''Bătrâna'') 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

Buzău Buzău (; formerly spelled ''Buzeu'' or ''Buzĕu'') is a city in the historical region of Muntenia, Romania, and the county seat of Buzău County. It lies near the right bank of the Buzău River, between the south-eastern curvature of the Carp ...

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 Buzău in

Vișani Vișani is a commune in Brăila County, Muntenia, 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, ...

.Paraul Boului (jud. Braila)
e-calauza.ro Its length is and its basin size is . It flows through Lake Jirlău.

References

Rivers of Romania Rivers of Brăila County Rivers of Buzău County {{Buzău-river-stub