| Lessard River | |
| Pushpin Map: | Quebec |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Administrative region |
| Subdivision Name3: | Chaudière-Appalaches |
| Subdivision Type4: | RCM |
| Subdivision Name4: | Robert-Cliche Regional County Municipality, La Nouvelle-Beauce Regional County Municipality |
| Source1: | Mountain and agricultural streams |
| Source1 Location: | Saint-Séverin |
| Mouth: | Chaudière River |
| Mouth Location: | Vallée-Jonction |
| Progression: | Chaudière River, St. Lawrence |
| Tributaries Left: | (upstream) |
| Tributaries Right: | (upstream) |
The Lessard River (in French: rivière Lessard) is a tributary of the west bank of the Chaudière River which flows northwards to empty onto the south bank of the St. Lawrence River. It flows in the municipalities of Saint-Séverin (MRC of Robert-Cliche Regional County Municipality) and Vallée-Jonction (MRC of La Nouvelle-Beauce Regional County Municipality), in the administrative region of Chaudière-Appalaches, in Quebec, in Canada.
The main neighboring watersheds of the Lessard River are:
The Lessard River has its source on the northern slope of a mountain located in the southwest part of the municipality of Saint-Séverin. This head area is located north-west of the center of the village of Saint-Frédéric, at north-west of the center of the village of Tring-Jonction, at east of the village center of Saint-Séverin and at west of the Chaudière River.
From its source, the Lessard River flows almost to the limit of the former Sainte-Marie seigneury, over divided into the following segments:
The "Chute à Corinne" is located about three kilometers upstream from its confluence; then the river flows in a narrow valley between hills made of finiglacial materials, characterizing this part of Beauce. Several gravel and sand quarries exploit this natural resource.
The Lessard river empties on the west bank of the Chaudière River, in Saint-Joseph-des-Érables. This confluence is located downstream from the bridge in the village of Vallée-Jonction and at upstream from the Sainte-Marie-de-Beauce.
This watercourse was initially designated "Rivière du Tabord" according to a document of 1785, an enigmatic designation which perhaps recalls mount Tabor or Tabor, mountain of Lower Galilee where the transfiguration of Christ took place.
The current name evokes the Lessard families who were numerous to own lots of land near this watercourse. As early as 1819, the two lords Taschereau, Sainte-Marie and de Jolliet, built a flour mill on the land of François Lessard. Subsequently, this toponym is constantly in use in documents and on maps of this sector.[2]
The toponym "rivière Lessard" was made official on December 5, 1968, at the Commission de toponymie du Québec.[3]