Developments in the application of water to power, irrigation, and other engineering works during the last decade have heen accompanied by such progress in the development of methods for collecting and using data concerning the flow of streams that the art of river-discharge measurement has attained a recognized position as a branch of hydraulics. The subject is now included in the regular courses of engineering schools and is admittedly essential to the work of the practicing engineer. The first edition of River Discharge correlated the methods of collecting, analyzing, and using stream-flow records as developed at that time; the second and third editions were revised and expanded to include progress in the art; this new edition has been further expanded to contain the latest information on the subject. The present revision has been practically limited to Chapter VI and the last part of Chapter V, which have been largely rewritten. Chapter VI, formerly entitled Conditions affecting stream flow, has been expanded in scope to cover the field of hydrology as related to stream flow and the title changed accordingly. The book has been prepared for the use of both student and engineer. Clearness and conciseness have been sought, and lengthy theoretical and mathematical discussions have been avoided. J. C. H. N. C. G. WASHINGTON, D. C., A ugust, 1916.
(Typographical errors above are due to OCR software and don't occur in the book.)
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