Lake Nipissing

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Lake Nipissing

Location	Ontario
Coordinates	46°17′N 80°00′WCoordinates: 46°17′N 80°00′W
Lake type	Mesotrophic
Primary inflows	Sturgeon River, South River, Rivière Veuve
Primary outflows	French River
Catchment area	12,300 km² (4,750 sq mi)
Basin countries	Canada
Max. length	65 km (40 mi)
Max. width	25 km (16 mi)
Surface area	873.3 km² (337.2 sq mi)
Average depth	4.5 m (14.8 ft)
Max. depth	52 m (171 ft)
Water volume	3.8 km³ (0.9 cu mi)
Shore length¹	795 km (+ 619 km islands) 494 mi (+ 385 mi islands)
Surface elevation	196 m (643 ft)
Islands	Numerous
Settlements	North Bay
¹ Shore length is not a well-defined measure.

Lake Nipissing (French: lac Nipissing) is a lake in the Canadian province of Ontario. It is 873.3 km² (337.2 sq mi) in surface area, has a mean elevation of 196 m (643 ft) above sea level and is located between the Ottawa River and Georgian Bay. Excluding the Great Lakes, Lake Nipissing is the fifth-largest lake in Ontario. It is relatively shallow for a large lake, with an average depth of only 4.5 m (14.8 ft). The shallowness of the lake makes for many sandbars along the lake's irregular coastline. The lake has many islands.

The largest population centre on the lake's shoreline is the city of North Bay. North Bay sits along the lake's northeastern shoreline. Other notable towns are Callander (south of North Bay along Highway 11). The larger towns toward the western end of the lake are Sturgeon Falls, Garden Village, Cache Bay and Lavigne.

Lake Nipissing drains into Georgian Bay, which is a part of Lake Huron, via the French River. Lake Nipissing lies about 25 km (16 mi) northwest of Algonquin Provincial Park. The French fur trader Étienne Brûlé was the first European to visit the lake in 1610. Jean Nicolet, another French trader and explorer had a "cabin and trading-house" for eight or nine years living among the Indians on the shores of Lake Nipissing until 1633 when he was recalled to Québec to become Commissary and Indian Interpreter for the "Company of the Hundred Associates." The first permanent European settlement on the lake dates from around 1874 on the southeast corner. In 1882 the North West Mounted Police established their presence on the north east shore.

The lake contains over 40 different species of fish. Numerous sport fishing lodges dot the main shoreline or can be found on several of Nipissing's many islands. Most anglers target walleye, smallmouth bass, muskie, and northern pike. For various reasons, largely social, numerous stocking associations are engaged in attempts to artificially manipulate the lake's walleye population.

The lake's name means "big water" in the Algonquin language. The name Nipissing was also given to many places in the area, notably the Township of Nipissing, Nipissing District, and Nipissing University.

In the days of the fur trade, voyageurs travelled through the lake by canoe via the Mattawa and French rivers. When the fur trade started to decline in the 1880s, logging became the main economic activity. After World War I, the primary economic activity became tourism and recreation, although logging still contributes a significant economic stimulus to the area.

Unlike most lakes in Ontario, Lake Nipissing contains two volcanic pipes, which are the Manitou Islands and Callander Bay.^[1] The volcanic pipes formed by the violent, supersonic eruption of deep-origin volcanoes. Lake Nipissing lies in the Ottawa-Bonnechere Graben, a Mesozoic rift valley that formed 175 million years ago.