Rideau Canal(redirected from Rideau waterway)
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A waterway, about 200 km (125 mi) long, of southeast Ontario, Canada, connecting the Ottawa River at Ottawa with Lake Ontario at Kingston. Constructed between 1826 and 1832, it follows the course of the Rideau River for much of its length.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.