Laurentian Hills
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![Main Street in Chalk River.](/Images/godic/202502/08/Chalk_River_ON1209.JPG")
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Laurentian Hills is a municipality in Eastern Ontario, Canada, on the Ottawa River in Renfrew County. It surrounds (by land) Deep River on the Ontario side of the river. The town is home to the Nuclear Power Demonstration. The municipality was formed on January 1, 2000, when the United Townships of Rolph, Buchanan, Wylie and McKay and the Village of Chalk River were merged.