Thérain

The Thérain (French pronunciation: [teʁɛ̃]) is a river in France, tributary of the Oise. It is 94.4 km (58.7 mi) long. It rises between Saint-Michel-d'Halescourt and Grumesnil in Seine-Maritime at 175 meters elevation. It flows generally southeast, through Songeons, Milly-sur-Thérain, Beauvais, Hermes and Mouy, and joins the Oise at Creil.

Thérain
Location
Country	France
Physical characteristics
Source
• elevation	175 m (574 ft)
Mouth
• location	Oise
• coordinates	49°14′27″N 2°27′1″E
Length	94 km (58 mi)
Basin features
Progression	Oise→ Seine→ English Channel

Its valley, near the metropolitan area of Paris, has been a highly industrialized and populated area, and Beauvais lies at the foot of wooded hills on the left bank of the Thérain at its confluence with L' Avelon.

Affluents

• Ruisseau d'Hardouins
• Le Tahier
• Ruisseau de Wambez
• Le Petit Thérain
• L' Avelon
• Rivière de Saint-Quentin
• Rivière de Saint-Just
• La Liovette
• Le Wage
• Ru de Berneuil
• Fosse d'Orgueil
• La Laversines
• La Trye
• Le Sillet
• Ru de la Maladrerie
• Ru de Lombardie
• Le Moineau
• Fossé l' Evêque
• Le Ruisseau de Saint-Claude
• Le Ruisseau de Cires
• Le Ruisseau de Flandre