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Frozen, Wintry View of Circular Manicouagan Reservoir, Canada

January 28th, 2013 Category: Lakes

Canada – January 26th, 2013

The Manicouagan Reservoir is located north of the St. Lawrence River in Quebec. The reservoir was created by damming the arched Manicouagan and Mouchalagan Lakes with their associated rivers. The circular shape of the reservoir, highlighted by the white, frozen surface, and the surrounding landscape’s characteristics are a consequence of a meteoritic impact. A large island, ile Rene-Levasseur, fills the middle of the reservoir.

The Mouchalagane, Seignelay, and Themines rivers as well as the Petite Riviere Manicouagan and Hart Jaune River are the major inlets to this body of water. The Manicouagan River drains the reservoir. The water is oligotrophic, slightly acidic and very clear. This reservoir is monomictic and the thermocline develops during the summer at an average depth of 8 meters. According to the Biodiversity Institute of Ontario, mercury has been detected in whitefish, the main commercial fish species from the lake. This, however, is normal for reservoirs located in this region. The enhanced siltation that occurred when the reservoir was first dammed in the late 1960’s has settled and the water quality is generally considered to be pristine.

Uniquely Shaped Lakes in Canada – June 13th, 2012

51.2N 68.2W

June 13th, 2012 Category: Lakes, Rivers

Canada - June 1st, 2012

Several interesting bodies of water in Quebec, Canada can be observed in this image. Crossing the image from the bottom left to the center right is the Saint Lawrence River, which empties into the Gulf of Saint Lawrence, the world’s largest estuary. It is the outlet of North America’s Great Lakes via the Saint Lawrence River into the Atlantic Ocean. It is a semi–enclosed sea, covering an area of about 236,000 km2 (91,000 sq mi) and containing 35,000 km3 (7.7×1015 imp gal) of water.

The oval lake to the west of the estuary is Lac Saint-Jean, a large, relatively shallow body of water in south-central Quebec, in the Laurentian Highlands. It is situated 206 kilometres north of the Saint Lawrence River, into which it drains via the Saguenay River.

Northwest of Lac Saint-Jean, in the upper left corner, is the elongated Lake Mistassini, the largest natural lake by surface area in the province of Quebec, with a total surface area of approximately 2,335 km² and a net area (water surface area only) of 2,164 km².

Finally, visible in the upper right corner is another interestingly-shaped body of water: Manicouagan Reservoir, an annular lake in central Quebec. The lake and island are sometimes called the “eye of Quebec.”

Manicouagan Reservoir and Gulf of Saint Lawrence, Canada – April 21st, 2012

48.5N 69.4W

April 21st, 2012 Category: Image of the day, Lakes, Rivers

Canada - April 14th, 2012

Appearing a a white circle near the top of this image is the Manicouagan Reservoir (also Lake Manicouagan and the “Eye of Quebec”). This annular lake in central Quebec, Canada covers an area of 1,942 km², surrounding René-Levasseur Island. Here, at the end of the northern hemisphere winter, the lake appears frozen.

Visible to the south is the Gulf of Saint Lawrence, the world’s largest estuary. It is the outlet of North America’s Great Lakes via the Saint Lawrence River into the Atlantic Ocean. It is a semi–enclosed sea, covering an area of about 236,000 km2 (91,000 sq mi) and containing 35,000 km3 (7.7×1015 imp gal) of water. Sediments can be observed near the mouth of the river, entering the gulf.

Ottawa, Capital City of Canada, at Confluence of Ottawa and Rideau Rivers

45.4N 75.6W

January 27th, 2012 Category: Rivers

Canada - January 5th, 2012

This APM image shows the city of Ottawa, the capital of Canada. The city centre is located at the confluence of the Ottawa and Rideau Rivers. The Ottawa River forms the entire northern boundary of the city (which appears bright green in this image), which it shares with the province of Quebec’s municipalities of Pontiac and Gatineau.

Here, Gatineau can be seen as an orange area across the Ottawa River, which also forms the border between Ontario and Quebec. The highest point in the Ottawa is 166 m (545 ft) above sea level, while the lowest point in the city is the Ottawa River, at 44m above sea level. Located on a major, yet mostly dormant fault line,[50] Ottawa is occasionally struck by earthquakes.

Confluence of Ottawa and Gatineau Rivers, Canada

45.4N 75.6W

December 13th, 2011 Category: Rivers

Canada - December 11th, 2011

This APM image shows the Ottawa River in the Canadian provinces of Ontario and Quebec. For most of its length, it now defines the border between these two provinces. The total length of the river is 1,271 kilometers (790 mi); it drains an area of 146,300 km2, 65% in Quebec and the rest in Ontario, with a mean discharge of 1,950 m3/s.

The river rises from its source in Lake Capimitchigama, in the Laurentian Mountains of central Quebec, and flows west to Lake Timiskaming, then southeast to Ottawa and Gatineau. Here, it can be seen passing between those two cities in the lower left quadrant. The Gatineau River can also be seen in that part of the image, flowing south to join the Ottawa River at the city of Gatineau, Quebec. From there, the Ottawa River continues its course, draining into the Lake of Two Mountains and the St. Lawrence River at Montreal.

 

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