A Multi-Criteria Combination Approach to Determine Spatial Intervention Prioritization of Urban Flood Based on Source Tracking Analysis

Xinghua Wang (), Jingming Hou (), Guangyao Hu (), Xujun Gao () and Ruozhu Shen ()
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Xinghua Wang: Xi’an University of Technology
Jingming Hou: Xi’an University of Technology
Guangyao Hu: China Water Resources and Hydropower Seventh Engineering Bureau Co., Ltd.
Xujun Gao: Xi’an University of Technology
Ruozhu Shen: Ningxia Capital Sponge City Construction & Development Co., Ltd.

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2024, vol. 38, issue 3, No 5, 893-914

Abstract: Abstract Under the increasing stormwater events and consequent flood hazards, integrated flood management is increasingly becoming the most essential mitigation strategy to maximize the effectiveness of runoff reduction at the limitation of public budget. The research is aimed at proposed a multi-criteria combination approach to determine spatial intervention prioritization of urban flood based on source tracking analysis. First, Jinhua underpass catchment where an underpass is vulnerable to the impact of stormwater is selected as the case study. Second, source tracking analysis, which combining hydrodynamic model with rainfall-tracking model, is used to obtain the detailed dynamic information including water depth and contribution rate of different source areas. On the basis of source tracking analysis, from the perspective of source-process-end runoff volume management, five types of criteria are presented to evaluate the spatial intervention priority of each sub-area, entropy weight method is applied to combine useful information reflected by criteria 1–5 to form a comprehensive criterion identifying spatial priority of flood management. Notably, the results indicate that criteria extracted by source tracking analysis are highly effective in evaluating spatial priority for urban flood management. Specifically, criteria 1–5 estimate the importance in addressing runoff for different sub-areas from the view of source-progress-end, respectively. Moreover, the comprehensive criterion based on entropy weight method, an objective comprehensive evaluation method, can be used to guide the spatial prioritization of urban flood management for planners and decision-makers with respect to multi-perspective.

Keywords: Entropy weight method; Integrated flood management; Spatial prioritization; Source tracking analysis; Source-progress-end (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s11269-023-03700-z

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