Oison (river)
The Oison is a small river in the Eure department, Normandy, France. It is a left tributary of the Seine. Its source is in the commune of Saint-Amand-des-Hautes-Terres, and it flows into the Seine near Saint-Pierre-lès-Elbeuf. Its total length is . Val d'Oison. Eight villages in the valley of the Oison ("Val d'Oison") are twinned with the civil parish of Clanfield, United Kingdom.