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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50599

Title: ASSESSING FLOOD MITIGATION ALTERNATIVES IN SHIJR AREA IN METROPOLITAN TAIPEI1
Authors: Chao‐Hsien Liaw
Yao‐Lung Tsai
Mow‐Soung Cheng
Contributors: 國立臺灣海洋大學:河海工程學系
Keywords: flood mitigation
storm water management
watershed management
genetic algorithms
detention storage
hydrologic model
Date: 2006
Issue Date: 2018-10-16T08:39:54Z
Publisher: American Water Resources Association (AWRA) American Water Resources Association (AWRA)
Abstract: Abstract: The Keelung River Basin in northern Taiwan lies immediately upstream of the Taipei metropolitan area. The Shijr area is in the lower basin and is subject to frequent flooding. This work applies micromanagement and source control, including widely distributed infiltration and detention/ retention runoff retarding measures, in the Wudu watershed above Shijr. A method is also developed that combines a genetic algorithm and a rainfall runoff model to optimize the spatial distribution of runoff retarding facilities. Downstream of Wudu in the Shijr area, five dredging schemes are considered. If 10‐year flood flows cannot be confined in the channel, then a levee embankment that corresponds to the respective runoff retarding scheme will be required. The minimum total cost is considered in the rule to select from the regional flood mitigation alternatives. The results of this study reveal that runoff retarding facilities installed in the upper and middle parts of the watershed are most effective in reducing the flood peak. Moreover, as the cost of acquiring land for the levee embankment increases, installing runoff retarding measures in the upper portion of the watershed becomes more economical.
Relation: 42(2) pp.311-322
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50599
Appears in Collections:[河海工程學系] 期刊論文

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