| Coleraine River | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Name3: | Chaudière-Appalaches |
| Subdivision Type4: | MRC |
| Subdivision Name4: | Les Appalaches Regional County Municipality |
| Subdivision Type5: | Municipality |
| Subdivision Name5: | Saint-Joseph-de-Coleraine and Disraeli |
| Length: | 13.2km (08.2miles) |
| Source1: | Mountain streams |
| Source1 Location: | Saint-Joseph-de-Coleraine |
| Source1 Coordinates: | 45.9853°N -71.3899°W |
| Source1 Elevation: | 310m (1,020feet) |
| Mouth: | Saint-François River |
| Mouth Location: | Disraeli (parish) |
| Mouth Coordinates: | 45.92°N -71.3789°W |
| Mouth Elevation: | 248m (814feet) |
| Progression: | Saint-François River, St. Lawrence River |
| Tributaries Left: | (upstream) ruisseau de la Mine |
| Tributaries Right: | (upstream) décharge du lac de l'Est, ruisseau du 1e rang |
| Country: |  Canada |
The Coleraine river (in French: rivière Coleraine) is a tributary of lake Noir whose waters flow into lake Aylmer; the latter constitutes an extension of the Saint-François River. 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:) and Mont Oak (east side; altitude:). Its source is located one kilometer north of an abandoned quarry.
From its starting point, the Coleraine river flows over with a drop of, according to these segments:
The Coleraine River flows onto the north shore of Lac Noir (length: ; altitude:). The latter lake receives on its eastern shore the waters of the Bisby River. Black Lake connects from the south to Moose Bay, located northeast of lake Aylmer, the latter constituting a widening of the Saint-François River. The demarcation between Disraeli (parish) and Disraeli (city) is in the middle of the lake.[1]
The resort is highly developed on the shores of Lake Aylmer, Lac Noir and the lower part of the Coleraine River. Recreational boating is very popular on these bodies of water.
In addition, Route 112 runs along the Coleraine River on the east bank for almost the entire length of the river and Lac Noir.
The toponym "Rivière Coleraine" was officially registered on December 5, 1968, at the Commission de toponymie du Québec.[2]