The Effect of Varying Unit Periods on Shape of Unit
THESIS: THE EFFECT OF VARYING UNIT PERIODS ON SHAPE OP UNIT HYDROGRAPHS BY ELUDERIO SALVO, C. E. SUBMITTED FOR THE DEGREE OF MASTER OP ENGINEERING i960 UNIVERSITY OP NEW SOUTH WALES SCHOOL OP CIVIL ENGINEERING BROADWAY, SYDNEY, N, S, W. AUSTRALIA ^^ OF FOREiORO The germ of the idea to investigate the unit storm concept of lUsler and Brater using large watersheds (areas greater than 10 square miles) was stimulated by Associate Profess©r H, R, Vallentins, Officer- in-Charge, I'/ater Research Laboratory, University of New 3©uth vfeles, With the approval and subsequent encouragement and guidance of Professor C, H, Munro, Head, School of Civil Engineering, University of New South Wales, the pjriter made preliminary investigations using data from South Creek Catchment, an experimental watershed maintained by the University* Uppn the writer's return t© the Philippines, hydrol©gic data fr©m the watersheds ©f Belubula River and Tarcutta Creek were forwarded t® him by Mr, G, Whitehouse, Technical Staff Member, Hydrelsgy Section, Scheel of Civil Engineering, U. N, S, W, The results of the investigations and analyses are all embodied in this thesis. It may be said that this thesis has a tendency to over simplifica^- tion. There is a grain of truth in that. But is it not the end of every engineer to simplify the intricacies of mathematics and make the application to engineering pr©blems practical and easy? The theory of the unit hydrograph, first advanced by L, K, Sherman in 1932, is a simplified version of the mathematical treatment by J. A, Folse in his book, "A New Methsd of Estimating Stream Flow upon a New Evaporation Formula," The theory is based on the observed facts that the unit hydrograph ©f a stream has a characteristic shape that ^ ii is not generally modified by the different factors affecting the hydro- graph of a stream.
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