- Determination of Optimal Location of Washlands Considering Design Frequency
- Baek, Chun-Woo ; Ahn, Tae-Jin ;
- Journal of Korea Water Resources Association, volume 42, issue 7, 2009, Pages 559~569
- DOI : 10.3741/JKWRA.2009.42.7.559
Abstract
Due to environmental, economical and the other limitations, it has been more difficult to construct new large hydraulic structure such as dam. For this reason, it has been tried to use small hydraulic structure such as washland as alternative of hydraulic facility. Because the flood control effect of small hydraulic structure are affected by runoff volume, hydrograph, storage capacity and weir crest elevation, and design frequency must be predetermined for the design of the hydraulic structure. Multiple washlands will be required to satisfy enough peak reduction effect so that considering washlands as a network, rather than individually, are critical to analysis of flood reduction effect. In this study, new index for determination of optimal location for washlands is presented and the existing model for this determination is modified by adopting the new index. Developed new model is applied to Ansung river basin for examination and the new model shows its` applicability as a decision making criteria for the determination of optimal location for washlands.