| Petite rivière Niagarette | |
| Pushpin Map: | Quebec |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region administrative |
| Subdivision Name3: | Capitale-Nationale, Mauricie |
| Subdivision Type4: | Regional County Municipality |
| Subdivision Name4: | Portneuf Regional County Municipality |
| Subdivision Type5: | Municipalities |
| Subdivision Name5: | Saint-Thuribe, Saint-Casimir |
| Length: | 12.1km (07.5miles) |
| Discharge1 Location: | Saint-Casimir |
| Source1: | Confluence of two forest streams |
| Source1 Location: | Saint-Thuribe, MRC Portneuf Regional County Municipality |
| Source1 Coordinates: | 46.7114°N -72.2351°W |
| Source1 Elevation: | 138m (453feet) |
| Mouth: | Niagarette River |
| Mouth Location: | Saint-Casimir |
| Mouth Coordinates: | 46.6592°N -72.1469°W |
| Mouth Elevation: | 32m (105feet) |
| Tributaries Left: | (Upward from the mouth) Ruisseau Genest, ruisseau Martin. |
The Petite rivière Niagarette (English: Little Niagarette River) is a tributary of the Niagarette River, crossing the municipalities of Saint-Thuribe and Saint-Casimir, in the Portneuf Regional County Municipality, in the administrative region of Capitale-Nationale, in Quebec, in Canada.
The course of the Petite rivière Niagarette descends first on in the forest zone, then entirely in the agricultural environment;[1] thus, forestry and agriculture are the main economic activities in this small valley.
The surface of the Petite Niagarette River (except the rapids zones) is generally frozen from the beginning of December to the end of March, but the safe circulation on the ice is generally made from the end of December to the beginning of March.
The Little Niagarette River rises at an altitude of, at the confluence of two streams, on the west side of "La Montagne" in Saint-Thuribe where a ski center is set up. This source is located in a forest area at:
From its source, the course of the Little Niagarette River flows over with a drop of according to these segments:
The Little Niagarette River flows on the west bank of the Niagarette River, on the west side of the center of the village of Saint-Casimir.[1]
Two major floods have been reported in the history of the Niagarette River and the Little Niagarette River, in 1939 and in 1973. The waters of the Little Niagarette River rose by almost 4 meters during the night of September 5 to 6, 1973, following a 6 cm rain accumulation.[3]
The toponyms "Little Niagarette River" and "Niagarette River" are linked.
The toponym "Petite rivière Niagarette" was formalized on August 17, 1978, at the Place Names Bank of the Commission de toponymie du Québec.[4]