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Cleveland Dam

"The Cleveland Dam is a concrete dam at the head of the Capilano River in North Vancouver, British Columbia, Canada that holds back Capilano Lake, also known as Capilano reservoir. Part of the Capilano River Regional Park, it is not used for generating hydroelectricity, but rather for storing a portion of the Lower Mainland's drinking water. Construction was started in 1951 and completed in 1954."
-Wikipedia