River and Canal Engineering, the characteristics of open flowing streams, and the principles and methods to be followed in dealing with them. — 2. Navigation Canals.—A navigation canal is sometimes all on one level, but generally different reaches are at different

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River and Canal Engineering, the characteristics of open flowing streams, and the principles and methods to be followed in dealing with them. 2. Navigation Canals.—A navigation canal is sometimes all on one level, but generally different reaches are at different · ch 43/78

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