Saulx-les-Chartreux, Longjumeau, Chilly-Mazarin, Épinay-sur-Orge, Savigny-sur-Orge Left bank: Ru du Pommeret Ruisseau de la Goutte d'Or Rhodon Mérantaise Right bank:...

Île-de-France (France), left tributary of the Yvette, which is a tributary of the Orge. Its source is in Villejust, north of Longjumeau, in the Essonne department...

formed by the Ruisseau de Chauvac which flows west into the Dordogne. The Ruisseau de Laumond on the eastern side also flows east into the Orges as does the...