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Lower Santa Ana River Hydraulic Design for Levee Overtopping

by Rene A. Vermeeren, US Army Corps of Engineers, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

The purpose of overtopping or freeboard design is to minimize damages and catastrophic failure from floodwaters overtopping levees. This case study is presented to show the approach taken in the design process, since interpretation of Corps guidance is more on a case by case basis with consideration for project costs and practical hydraulic design. The analysis identified overbank areas where initial overtopping would be least hazardous, and adjusted levee heights to insure that flow conditions resulting in higher water surfaces would initially overtop the levee in these areas. The channel design thus incorporated features to allow for safe overtopping without causing damage to the levee system.

Subject Headings: Hydraulic design | Wave overtopping | Levees and dikes | Case studies | Rivers and streams | Floods | Water surface

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