River and Canal Engineering, the characteristics of open flowing streams, and the principles and methods to be followed in dealing with them. — 2. Available Rainfall.—The area drained by a stream is called its “catchment area” or “basin.” The available rainfall in

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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. Available Rainfall.—The area drained by a stream is called its “catchment area” or “basin.” The available rainfall in · ch 8/78

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