It flows entirely in the municipality of Sainte-Victoire in the Pierre-De Saurel Regional County Municipality (MRC), in the administrative region of Montérégie, on the South Shore of St. Lawrence River, in Quebec, Canada.

The economic vocation of this hydrographic slope is essentially agricultural.

The Lemoine River has its source in an agricultural zone on the east side of chemin du rang Bellevue in the municipality of Sainte-Victoire-de-Sorel.

From its source, the course of the Lemoine river descends on 7.8 kilometres (4.8 mi) almost entirely in agricultural zone, with a drop of 6 metres (20 ft), according to the following segments: The mouth of the Petite rivière Bellevue empties on the north shore of Lemoine River which flow north to the rivière Pot au Beurre (a tributary of the west shore of Yamaska River.

The toponym "Petite rivière Bellevue" was made official on May 31, 1983, in the place name bank of the Commission de toponymie du Québec.