The Maheu river originates in a forest area at the mouth of a very small unidentified lake, in Saint-Pierre-de-l'Île-d'Orléans. This source is located a hundred meters southwest of the Route des Prêtres, southeast of the village center of Saint-Pierre-de-l'Île-d'Orléans, southeast of the Chenal de l'Île d'Orléans and northeast of the shore of St. Lawrence River. From this source, the course of the Maheu river descends on, with a drop of, according to the following segments:
north-east in a forest zone in Saint-Pierre-de-l'Île-d'Orléans, first by crossing the Route des Prêtres, by collecting a stream, to a bend in the river corresponding to a stream ;
first towards the east in the forest zone by entering Saint-Laurent-de-l'Île-d'Orléans, towards the east by entering the agricultural zone, by bending to the north and collecting a stream before entering Saint-Jean-de-l'Île-d'Orléans, up to a bend in the river;
towards the south-east in the agricultural zone by forming a loop towards the east, then crossing a series of rapids until its mouth.
The Maheu river flows at the bottom of the Rade Maheu in Saint-Jean-de-l'Île-d'Orléans, that is to the limit of Saint-Jean-de-l'Île-d'Orléans and Saint-Laurent-de-l'Île-d'Orléans. This harbor is spanned a hundred meters further by the route 368 bridge. This harbor whose sandstone of about at low tide, is attached to Chenal des Grands Voiliers whose width is at this location and is crossed by the St. Lawrence River.
Toponymy
The toponymic designation "river Maheu" evokes the memory of René Maheu, pilot on the river, whose concession was granted to him in 1651. Originally from Paris, Maheu was nephew of the first pioneer of New France, Louis Hébert. René Maheu was present in Acadia in 1610 and 1612; a first concession in New France was granted to him in 1637. René Maheu married May 23, 1648 in La Rochelle, in France, to Marguerite Courivault. Following the death in 1661 of the pioneer Maheu, his fiefdom was passed on to his son Jean-Paul Maheu. Marguerite Corriveau was appointed tutor of the minor children of René Maheu. According to a plan of 1659, the Maheu fief included the watercourse designated "Saint-Louis river" on Île d'Orléans. Formerly, this river drained a swamp locally designated "Lac à Maheu". In 1689, the lake at Maheu and the river of the same name appear on a geographical plan. Due to the digging of streams, this marsh has dried up throughout history, and this toponym has disappeared from geographic maps. Thus, the name of the owner of the fief has supplanted that of "Saint-Louis river" in popular usage. The toponym "Rivière Maheu" was formalized on December 5, 1968 at the Place Names Bank of the Commission de toponymie du Québec.
