The course of the Coleraine river crosses the territory of the municipalities of Saint-Joseph-de-Coleraine and Disraeli (parish), in the Les Appalaches Regional County Municipality of Les Appalaches Regional County Municipality, in the administrative region of Chaudière-Appalaches, on the South Shore of the St. Lawrence River, in Quebec, Canada.

The main neighboring watersheds of the Coleraine river are: The Coleraine River has its source at Saint-Joseph-de-Coleraine in the mountains, between Kerr Hill (west side; altitude: 470 metres (1,540 ft)) and Mont Oak (east side; altitude: 459 metres (1,506 ft)).

From its starting point, the Coleraine river flows over 13.2 kilometres (8.2 mi) with a drop of 62 metres (203 ft), according to these segments: The Coleraine River flows onto the north shore of Lac Noir (length: 2.3 kilometres (1.4 mi); altitude: 249 metres (817 ft)).

[1] The resort is highly developed on the shores of Lake Aylmer, Lac Noir and the lower part of the Coleraine River.

The toponym "Rivière Coleraine" was officially registered on December 5, 1968, at the Commission de toponymie du Québec.