Multiple Flood Source Expected Annual Damage Computations
Publication: Journal of Water Resources Planning and Management
Volume 136, Issue 3
Abstract
For flood damage reduction analysis, the standard for measuring risk is expected annual damage. This index represents a long-term average annual flood damage for a given structure or area. We compute this index by integrating a probability-damage function. In practice, we develop the required function by developing a water level (stage)-probability function and an elevation-damage relationship. The analysis becomes complex when the stage-probability function is dependent upon multiple flooding sources. For example, this occurs when an area is protected by multiple leveed reaches or can be flooded from more than one stream. Here we propose alternative analysis frameworks for computing expected annual damage considering this complicating factor. An example illustrates that appropriate methods depend on the alternatives evaluated, the correlation of discharges, and the number of levee reaches.
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Acknowledgments
The writers appreciate the support and cooperation, through various conversations and discussions, of the following people: David Ford, Steve Cowdin, Darryl Davis, Richard Males, and Beth Faber. However, the support of these persons does not imply endorsement of the results presented.
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Information & Authors
Information
Published In
Journal of Water Resources Planning and Management
Volume 136 • Issue 3 • May 2010
Pages: 319 - 326
Copyright
© 2010 ASCE.
History
Received: Dec 19, 2008
Accepted: May 5, 2009
Published online: May 15, 2009
Published in print: May 2010
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