File:Merrickville Locks - 1829.jpg

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Merrickville_Locks_-_1829.jpg (600 × 245 pixels, file size: 41 KB, MIME type: image/jpeg)

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This canal construction map shows the geography at Merrick’s Mills in 1829. The Rideau River has been flooded upstream of William Mirick’s mill dam. Excess water is being diverted through a flood channel of the river (Merrick’s Snie). In order not to disturb Mirick’s mills, By’s plan was to cut a bypass channel around this section of the river, placing a canal dam upstream of Mirick’s dam, to provide a navigation depth of water into the canal cut. The three locks are spaced out to take advantage of the local topography. “Plan of the Works in progress at Merricks Mills Rideau Canal April 1829” by E.C. Frome, April 1829, National Archives of Canada, NMC 130251.
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Source http://www.rideau-info.com/canal/history/rideau-route/surveys.html
Author E.C. Frome
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Public domain
This Canadian work is in the public domain in Canada because its copyright has expired due to one of the following:
1. it was subject to Crown copyright and was first published more than 50 years ago, or

it was not subject to Crown copyright, and

2. it is a photograph that was created prior to January 1, 1949, or
3. the creator died prior to January 1, 1972.
You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
 Note that this work might not be in the public domain in countries that do not apply the rule of the shorter term and have copyright terms longer than life of the author plus 50 years. In particular, Mexico is 100 years, Jamaica is 95 years, Colombia is 80 years, Guatemala and Samoa are 75 years, Switzerland and the United States are 70 years, and Venezuela is 60 years.

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current06:01, 14 November 2011Thumbnail for version as of 06:01, 14 November 2011600 × 245 (41 KB)Geo Swan (talk | contribs){{Information |Description= Original caption: :''This canal construction map shows the geography at Merrick’s Mills in 1829. The Rideau River has been flooded upstream of William Mirick’s mill dam. Excess water is being diverted through a flood channe

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