Diversion Structure for Peak Flow Reduction

by Hasan Nouri, Rivertech Inc, Newport Beach, CA, USA,

Document Type: Proceeding Paper

Part of: Steel Structures


The flood control requirements of a planned development in the City of Orange, California were such that the peak discharges ranging from an annual flood up to 25-year return period be significantly reduced, not only to offset the increased runoff as a result of the development but to alleviate some of the existing drainage problems downstream from the development. Because of the high cost of land, design of a conventional detention basin did not present the most cost-effective solution. A special inlet/outlet diversion structure was analyzed and designed to convert a planned park into a detention basin during peak flow periods for the specified range of recurrence intervals. Extensive interaction between engineers and landscape architects resulted in a solution which is cost-effective, has low maintenance cost and disturbs the park operation very infrequently.

Subject Headings: Peak flow | Floods | Detention basins | Structural control | Drainage | Benefit cost ratios | Financial management | Parks | California | United States

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