Run of the Oise in France 
|Water code||FR : H --- 0100|
|location||Belgium , Province of Hainaut and France , Hauts-de-France and Île-de-France regions|
|Drain over||Its → English Channel|
|source||in Belgium , in the municipality of Chimay,
49 ° 59 ′ 47 ″ N , 4 ° 21 ′ 21 ″ E
|Source height||approx. 310 m|
|muzzle||on the municipal boundary of Conflans-Sainte-Honorine and Andrésy in the Seine coordinates: 48 ° 59 ′ 15 ″ N , 2 ° 4 ′ 18 ″ E 48 ° 59 ′ 15 ″ N , 2 ° 4 ′ 18 ″ E
|Mouth height||approx. 20 m|
|Height difference||approx. 290 m|
|Bottom slope||approx. 0.85 ‰|
|length||approx. 341 km|
|Catchment area||16,667 km²|
||110 m³ / s
|Medium-sized cities||Compiègne , Creil , Cergy , Pontoise , Conflans-Sainte-Honorine|
|Small towns||Hirson , Guise , Chauny , Noyon , Beaumont-sur-Oise , L'Isle-Adam|
|Navigable||from the estuary to Compiègne|
The Oise is a river in Belgium and especially in northern France and is one of the most important bodies of water in this area. It rises in Belgium, in the municipality of Chimay and flows into the Seine as a right tributary on the municipal boundary of Conflans-Sainte-Honorine and Andrésy . It has a total length of around 341 kilometers (including around 10 kilometers on Belgian territory) and a catchment area of 16,667 square kilometers. The Oise flows through the North , Aisne , Oise , Val-d'Oise and Yvelines departments . The western foothills of the Ardennes on the Belgian border, between Hirson and Guise , called Thiérache , include the upper Oise Valley as well as the headwaters of the Sambre and several tributaries of the Sambre and Oise.
The mean discharge of the Oise is 110 m³ / s (in Pont-Sainte-Maxence ). The longest hydrological course of the river in the Oise river system includes the Aire from its source at Saint-Aubin-sur-Aire in the Barrois to its confluence with the Aisne near Termes in the canton of Grandpré , that from there to its confluence at Compiègne and the Oise from there up to its confluence with the Seine. It is one and a half times as long as the Oise itself.
The Oise is navigable from its confluence with the Seine to Compiègne. From there, the also navigable Aisne offers an onward connection to the east. To the north, the Canal latéral à l'Oise (German: Oise-Seitenkanal ), then the Canal de Saint-Quentin (German: Canal von Saint-Quentin ) and finally the Canal de la Sambre à l'Oise (German: Sambre -Oise Canal ) the river to its upper reaches.
The Canal de l'Oise à l'Aisne (German: Oise-Aisne Canal ) does not connect the two rivers, but only their side canals as a shipping route.
Places on the river
- La Fère
The Celts named the river Isara , which is the same name as the Isère , the Flemish IJzer , the Bavarian Isar and the South Tyrolean Eisack ( Italian : Isarco). During the development of French , the 'i' became 'oi', like many old 'i' and 'e', such as Liger> Loire, bibere> boire ("drink", Italian : bere) and stella> étoile (" Star").
At least since the Middle Ages, the Oise was eponymous for regions. Before the French Revolution there was the county of Valois [amalgamation of the word val (lée) ("valley") with the name Ois (e) ] as the ancestral home of the noble house of Valois , to which several French kings belonged. Since the traditional structure of France was replaced by the division into départements after the French Revolution , two départements have been named after the Oise. On March 4, 1790, the Oise department (which has remained unchanged since then) and the Seine-et-Oise department were created. The latter existed until January 1, 1968, when the area around Paris was divided into smaller departments due to its population growth. One of these new ones is called Val-d'Oise .
- ↑ Source geoportail.gouv.fr
- ↑ estuary geoportail.gouv.fr
- ↑ Oise at SANDRE (French)
- ↑ Val-d'Oise or Val d'Oise : While in French place names everything except a possibly existing article is connected by hyphens, one is less consistent with department names. In the present case it is on the website of the prefecture with hyphen as Val-d'Oise , however, on the website of the General Council without the hyphen Val d'Oise written