Orge
| Orge | |
|---|---|
| Location | |
| Country | France | 
| Physical characteristics | |
| Mouth | |
|  • location | Seine | 
|  • coordinates | 48°42′38″N 2°24′14″E / 48.71056°N 2.40389°E | 
| Length | 54 km (34 mi) | 
| Basin features | |
| Progression | Seine→ English Channel | 
The Orge (French pronunciation: [ɔʁʒ] ⓘ) is a 54.1-kilometre (33.6 mi) long river in France, left tributary of the Seine. Its source is in the village Saint-Martin-de-Bréthencourt. Its course crosses the départements of Yvelines and Essonne. It flows northwest through the towns of Dourdan, Saint-Chéron, Breuillet, Arpajon, Savigny-sur-Orge, and Viry-Châtillon, finally flowing into the Seine in Athis-Mons, south of Paris. The towns located on the banks of the river usually have s/ Orge added to their name (i.e. Épinay-sur-Orge, Longpont-sur-Orge, Villiers-sur-Orge). The Yvette is a tributary of the Orge.