Mattagami River

Mattagami River in Smooth Rock Falls

The Mattagami River (French Rivière Mattagami ) is a river in the catchment area of ​​Hudson Bay in northern Ontario in Canada.

The Mattagami River has a total length of 443 km (from the end of Lake Minissinakwa ). The river is located in the area of the Canadian Shield. It flows through Timmins and in a northerly direction to the Portage Iceland in the north of Cochrane District. Here the Mattagami together with the Missinaibi River to Moose River - about 100 km before its confluence with the James Bay. The river flows through the city of Timmins, as well as Smooth Rock Falls.

At the point where the Groundhog River Kapuskasing River and flow into the Mattagami River, the Ontario Power Generation operates a 5 km long causeway.

The name of the Mattagami River comes from the Ojibwe language and means either " the beginning of the water " ( maadaagami ) or " turbulent water " ( madaagami ).

Inflows

• Kapuskasing River Nemegosenda River
• Kapuskasing Lake Chapleau River

• Ivanhoe River
• Nat River

• Minisinakwa River Nabakwasi River
• Noble River

Hydropower plants

The Ontario Power Generation ( OPG) operates several hydroelectric power plants along the Mattagami River.

In the downstream direction, they are:

As part of the Lower Mattagami project OPG increased since 2010, the power plant capacity in the lower reaches of the Mattagami River. This is done in collaboration with the Moose Cree First Nation.

The hydropower plant Smoky Falls is renewed since 2011 and receives three turbines with a total capacity of 267.9 MW. Since 2010, the hydropower plants Harmon and Kipling will each receive an additional 78.3 MW turbine, and Little Long, an additional 66.5 MW turbine.

In addition, the hydropower plants Wawaitin, Sandy Falls and Lower Sturgeon were at the headwaters of the Mattagami River completed in late 2010 and replace outdated predecessor buildings. With Iceland If a new hydroelectric power plant is being built by the river.