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Coquitlam Lake facts for kids

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Coquitlam Lake
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Location North of Coquitlam, British Columbia
Coordinates 49°24′N 122°47′W / 49.400°N 122.783°W / 49.400; -122.783
Type Reservoir
Primary inflows Coquitlam River
Primary outflows Coquitlam River
Basin countries Canada
Surface area 11 km2 (4.2 sq mi)
Surface elevation 154 m (505 ft)
Islands Coquitlam Island

Coquitlam Lake is a reservoir located just north of Coquitlam, British Columbia. It is one of the three main water sources for Metro Vancouver, and part of the Coquitlam watershed. It is also a part of BC Hydro's power generation system. A tunnel directs water from the lake to nearby Buntzen Lake, and from there to a pair of power stations.


Construction of the tunnel between Coquitlam Lake and Buntzen Lake began in 1902 and finished in 1905, supplying water to powerhouses on Indian Arm, which supplied electricity to Vancouver.

The first Coquitlam Dam, built to raise the water level by 5 feet (1.52 m), was begun in April 1904 and completed in 1905. It was built to protect the water supply to the powerhouses, and also supplied water to New Westminster. By 1906 the original dam was discovered to be leaking, and while repairs were made the leak continued through 1908, until the current dam was completed in 1914.

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