Hydrologic Aspects of Flood Warning—Preparedness Programsby Harry W. Dotson, Hydrologic Engineering Cent, Davis, United States,
John C. Peters, Hydrologic Engineering Cent, Davis, United States,
Abstract: A reliable flood-threat recognition system is a vital component of a sound flood warning-preparedness program. Fundamental questions associated with the development of a flood-threat recognition system are: what warning times can be achieved, and how reliable will the warnings be? Answers to these questions depend on watershed and storm characteristics, and the flood-threat recognition method being considered. The tradeoff between warning time and warning reliability is illustrated, and methods for estimating warning time are discussed.
Subject Headings: Disaster warning systems | Floods | System reliability | Watersheds | Stormwater management | Hydrologic properties | Mathematics
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