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Lake Nipissing is the third-largest lake entirely in Ontario. It is relatively shallow for a large lake, with an average depth of only 4.5 m (15 ft). The shallowness of the lake makes for many sandbars along the lake's irregular shoreline.
Depth max. Volume Lake Superior [3] 82,100 km 2 (31,700 sq mi) 184 m (604 ft) ... Trout Lake (Nipissing District) Tunnel Lake; Turtle Lake; Twelve Mile Lake (Ontario)
Nipissing Great Lakes was a prehistoric proglacial lake. Parts of the former lake are now Lake Superior, Lake Huron, Georgian Bay and Lake Michigan. It formed about 7,500 years before present (YBP). The lake occupied the depression left by the Labradorian Glacier. [1] This body of water drained eastward from Georgian Bay to the Ottawa valley.
Bras d'Or Lake is the largest lake in Nova Scotia with an area of 1,099 km 2 (424 sq mi). The tidal lake has a maximum length of 100 kilometres (62 mi), a maximum width of 50 kilometres (31 mi) and a maximum depth of 287 m (942 ft). [10]
This depth compares with the maximum depths of 750 feet (229 m) in Lake Huron and 923 feet (281 m) in Lake Michigan. Although the Straits create a pronounced bottleneck in the contours of the shoreline and a major constriction in the local bathymetry , defining two distinct basins, they are still deep and wide enough to allow the free exchange ...
Callander Bay is an eroded Proterozoic volcanic pipe [7] formed by the violent, supersonic eruption of a deep-origin volcano.These volcanoes originate at least three times as deep as most other volcanoes, and the resulting magma that is pushed toward the surface is high in magnesium and volatile compounds such as water and carbon dioxide.
The Manitou Islands Provincial Nature Reserve protects 4 of the 5 islands (as a private island, Calder Island is excluded), and also has a 1-kilometer-wide zone around the islands that protects the submarine lakebeds. It was established in 1989 and is representative of island ecology in Lake Nipissing with warmer than normal regional temperatures.
Lake Nipissing, connected to Georgian Bay by the French River, contains two volcanic pipes, which are the Manitou Islands and Callander Bay. [20] These pipes were formed by a violent, supersonic eruption of deep origin. The lake lies in the Ottawa-Bonnechere Graben, a Mesozoic rift valley that formed 175 million years ago.