The lower part of this small valley is served by Chemin Royale (route 368) which runs along the southeast shore of Île d'Orléans.

The Lafleur river originates in the "Les Savanes" marshes (altitude: 68 metres (223 ft)), at the limit of the forest and agricultural zones, in Saint-Jean-de-l'Île-d'Orléans.

This harbour whose sandstone of about 0.3 kilometres (0.19 mi) at low tide, is attached to Chenal des Grands Voiliers whose width is 3.3 metres (11 ft) at this location.

The name of the Lafleur river appears on the map of Villeneuve of 1689, under the spelling "Rivière à la Fleur".

[4] The current spelling of the toponym is formalized on March 28, 1974 at the Place Names Bank of the Commission de toponymie du Québec.