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Selection of the Form of Calculated Flood Hydrograph in Projecting Water Release Facilities

by D. M. Yaroshevskii,



Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water

Abstract:

Traditionally, in evaluating hydraulic structures, river flood runoff hydrographs are determined by maximum flood water volume and discharge, duration of the flood and some other parameters, selected based on the fundamental class of hydraulic structures and calculated probability, related to it. The recommended form of hydrograph is to be the most unfavorable. The latter means that negative consequences in the lower pool are known under the trans formation of any input hydrograph. However, the output hydrograph cannot be determined without precise description of the input one. The way out of this situation is setting an extremal task. It can be described as a task of optimum management with phase constraints and solved directly by numerical methods. Taking into account the estimative character of the methodology, it will be simpler to analyze a discrete analog of the task, reduced to non-linear finite dimensional optimization.

Subject Headings: Hydrographs | Hydraulic structures | Floods | Water discharge | Rivers and streams | Runoff | Numerical methods

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