Assessment of overtopping reliability and benefits of a flood detention dam

Date

2008-10-01

Author

Yanmaz, Ali Melih

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There is a growing tendency to assess safety levels of existing dams and to design new dams using probabilistic approaches according to project characteristics and site-specific conditions. This study is a probabilistic assessment of the overtopping reliability of a dam, which will be designed for flood detention purpose, and will compute the benefits that can be gained as a result of the implementation of this dam. In a case study, a bivariate flood frequency analysis was carried out using a five-parameter bivariate gamma distribution. A family of joint return period curves relating the runoff peak discharges to the runoff volumes at the dam site was derived. A number of hydrographs were also obtained under a joint return period of 100ayears to observe the variation of overtopping tendency. The maximum reservoir elevation and overtopping reliability were determined by performing a probabilistic reservoir routing based on Monte Carlo simulations.

Subject Keywords

Civil and Structural Engineering, General Environmental Science

URI

https://hdl.handle.net/11511/46528

Journal

CANADIAN JOURNAL OF CIVIL ENGINEERING

DOI

https://doi.org/10.1139/l08-052

Collections

Department of Civil Engineering, Article

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Citation Formats

A. M. Yanmaz, “Assessment of overtopping reliability and benefits of a flood detention dam,” CANADIAN JOURNAL OF CIVIL ENGINEERING, pp. 1177–1182, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/46528.