The Troësne is a river in France that runs through the regions of Hauts-de-France and Normandy. It originates in the municipal area of Hénonville, generally draining northwest to west and flows into the Epte as a left tributary in the urban area of Gisors after 27 kilometers. In its upper course, the river is canalized and is known as the Canal de Marquemont; it is only known by its actual name starting from Chaumont-en-Vexin. On its way, the Troësne crosses the departments of Oise and Eure.
In the municipal area of Fleury, the Canal de Marquemont takes in the 10.6 km long stream Ru du Mesnil, and at Trie-Château, the Troësne receives the Aunette.
Source: Wikipedia.org
Copyright: Creative Commons 3.0
Address: Haute-Normandie, France
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