Rivière à l'Île
| Old name: "Saint-Adolphe River" (main segment) | |
|---|---|
| Location | |
| Country | Canada |
| Province | Quebec |
| Region | Capitale-Nationale |
| Regional County Municipality | La Jacques-Cartier Regional County Municipality |
| Municipality | Château-Richer, Stoneham-et-Tewkesbury and Sainte-Brigitte-de-Laval |
| Physical characteristics | |
| Source | Lac de la Dame Deux |
| • location | Château-Richer |
| • coordinates | 47°08′39″N 71°09′56″W / 47.14427°N 71.16567°W |
| • elevation | 698 m |
| Mouth | Montmorency River |
• location | Sainte-Brigitte-de-Laval |
• coordinates | 47°01′28″N 71°10′35″W / 47.02444°N 71.17639°W |
• elevation | 238 m |
| Length | 16.7 km (10.4 mi) |
| Basin features | |
| Tributaries | |
| • left | (Upward from the mouth) Discharge of small lakes which are in the heart of the village of Sainte-Brigitte-de-Laval, unidentified stream, outlet of Lake Thibeault, unidentified stream. |
| • right | (Upward from the mouth) Unidentified stream, unidentified stream, discharge from two unidentified lakes, unidentified stream, West Arm of Rivière à l'Île (constituting the outlet of three lakes including Lac Garneau), Fiset stream. |
The Rivière à l'Île (English: river to the island) is a tributary of the west bank of the Montmorency River, flowing in the administrative region of Capitale-Nationale, Quebec, Canada. This river successively flows through the regional county municipalities (MRC) of:
- La Côte-de-Beaupré Regional County Municipality: municipality of Château-Richer;
- La Jacques-Cartier Regional County Municipality: the municipality of the united cantons of Stoneham-et-Tewkesbury and the city of Sainte-Brigitte-de-Laval.
This valley is served mainly by rue Saint-Louis which goes up on the east side of this watercourse and by rue Labranche which goes up in part on the west side. Forestry is the main economic activity in this valley; recreational tourism, second.
Because of its altitude, the surface of the upper part of the Île river is generally frozen from the end of November to the beginning of April; however, safe circulation on the ice is generally done from mid-December to the end of March. The lower part of the river course has a freezing period of about a week less than the upper part. The water level of the river varies with the seasons and the precipitation; the spring flood occurs in March or April.