Approach for Describing Statistical Properties of Flood Hydrograph
Publication: Journal of Hydrologic Engineering
Volume 7, Issue 2
Abstract
The shape of a flood hydrograph is a random event. This study develops a method for describing statistical properties of the shape of a flood hydrograph. Two shape variables, namely, shape mean and shape variance are defined to express the randomness of a flood hydrograph. The two-parameter beta probability density function (pdf) is adopted to represent the shape of a flood hydrograph. The parameters are estimated using the shape variables. On the basis of this approach, one can derive the design-flood hydrograph shape corresponding to various combinations of flood peak, volume, and duration. The applicability of the proposed method is demonstrated by using observed flood data from the Ashuapmushuan basin in the province of Quebec, Canada. It is concluded that the method is appropriate for representing the statistical properties of the shape of a flood hydrograph.
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Information
Published In
Journal of Hydrologic Engineering
Volume 7 • Issue 2 • March 2002
Pages: 147 - 153
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Aug 9, 2000
Accepted: Aug 13, 2001
Published online: Mar 1, 2002
Published in print: Mar 2002
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