The Serre () is a

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or 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 drain the surrounding drainage ...

of the river

Oise Oise ( ; ; pcd, Oése) is a department in the north of France. It is named after the river Oise. Inhabitants of the department are called ''Oisiens'' () or ''Isariens'', after the Latin name for the river, Isara. It had a population of 829,419 ...

in northern

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...

, in the departments of

Ardennes The Ardennes (french: Ardenne ; nl, Ardennen ; german: Ardennen; wa, Årdene ; lb, Ardennen ), also known as the Ardennes Forest or Forest of Ardennes, is a region of extensive forests, rough terrain, rolling hills and ridges primarily in Be ...

and

Aisne Aisne ( , ; ; pcd, Ainne) is a French department in the Hauts-de-France region of northern France. It is named after the river Aisne. In 2019, it had a population of 531,345.La Férée La Férée () is a commune in the Ardennes department in northern France. Population See also *Communes of the Ardennes department The following is a list of the 449 communes of the Ardennes department of France. The communes cooper ...

, Ardennes, from which it flows west into the Aisne department. It flows through Montcornet, Marle and

Crécy-sur-Serre Crécy-sur-Serre (, literally ''Crécy on Serre (river), Serre'') is a Communes of the Aisne department, commune in the Aisne Departments of France, department in Hauts-de-France in northern France.La Fère La Fère () is a commune in the Aisne department in Hauts-de-France in France. Population See also * Communes of the Aisne department The following is a list of the 799 Communes of France, communes in the French Departments of France, de ...

. Its total length is .

References

Rivers of France Rivers of Hauts-de-France Rivers of Grand Est Rivers of Aisne Rivers of Ardennes (department) {{France-river-stub