River and Canal Engineering, the characteristics of open flowing streams, and the principles and methods to be followed in dealing with them. — 5. Prevention of Floods.—The extended use of field drains has, in recent years, done much to increase the severity of fl

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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. 5. Prevention of Floods.—The extended use of field drains has, in recent years, done much to increase the severity of fl · ch 61/78

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