river
A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of w ...
of northern
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan area ...
, right tributary of the Lys. It is long. Its source is near
Magnicourt-en-Comte
Magnicourt-en-Comte (; pcd, Magnicourt-in-Comté) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.
Geography
Magnicourt-en-Comte is situated northwest of Arras, at the junction of the D83, D86 and the D74 ...
. It flows generally northeast through
Houdain
Houdain () is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.
Geography
A former coalmining, now a light industrial and farming town, situated some south of Béthune at the junction of the D86, D301 and the ...
,
Bruay-la-Buissière
Bruay-la-Buissière (; vls, Bruwaei, pcd, Brouay-l'Bussière) is a commune in the Pas-de-Calais department in the Hauts-de-France region in northern France.
Geography
A former coalmining town some southwest of Béthune and southwest of ...
,
Béthune
Béthune ( ; archaic and ''Bethwyn'' historically in English) is a city in northern France, sub-prefecture of the Pas-de-Calais department.
Geography
Béthune is located in the former province of Artois. It is situated south-east of Calais, ...
and
Lestrem
Lestrem (; ; ) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.
Geography
A small farming and light industrial town, situated some north of Béthune and west of Lille, on the D122, D178 and D975 roads, by ...