Saint-Maurice River in the context of "Atikamekw"

Trois-Rivières (French: [tʁwɑ ʁivjɛʁ], Canadian French: [tʁwɔ ʁivjaɛ̯ʁ] ; lit. 'Three Rivers') is a city in the Mauricie administrative region of Quebec, Canada. It is located at the confluence of the Saint-Maurice and Saint Lawrence rivers, on the north shore of the Saint Lawrence River across from the city of Bécancour. It is part of the densely populated Quebec City–Windsor Corridor and is approximately halfway between Montreal and Quebec City. Trois-Rivières is the economic and cultural hub of the Mauricie region. The settlement was founded by French colonists on July 4, 1634, as the second permanent settlement in New France, after Quebec City in 1608.

The name of Trois-Rivières, which dates from the end of the 16th century, was used by French explorers in reference to the three channels in the Saint-Maurice River formed at its mouth with the Saint Lawrence, as it is divided by two islands, Potherie (Île Caron) and Île Saint-Quentin. The city occupies a location near where Jacques Cartier, in a 1535 trip along the St. Lawrence, stopped to plant a cross on Saint-Quentin island.

Mauricie (French pronunciation: [mɔʁisi]) is a traditional and current administrative region of Quebec. La Mauricie National Park is contained within the region, making tourism in Mauricie popular. The region has a land area of 35,860.05 km (13,845.64 sq mi) and a population of 266,112 residents as of the 2016 Census. Its largest cities are Trois-Rivières and Shawinigan.

The word Mauricie was coined by local priest and historian Albert Tessier and is based on the Saint-Maurice river which runs through the region on a North-South axis.

Saint-Quentin Island (French: Île Saint-Quentin, pronounced [il sɛ̃ kɑ̃tɛ̃]) lies at the confluence of the Saint-Maurice River and Saint Lawrence River in the city of Trois-Rivières, Quebec, Canada. The island, along with Saint-Christophe and De La Poterie islands, are each named after one of the three channels formed by the Saint-Maurice River at its mouth with the St. Lawrence, where it flows between two islands.

It owes its name to judge Quentin Moral, known as "Saint-Quentin", who was a fur trader and one of the first dealers on this island. It is now a center of popular outdoor activities and leisure at the hearth of city. The patron saint of the island is Quentin de Rome.