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Int. J. Environ. Res. Public Health 2011, 8(5), 1368-1387; doi:10.3390/ijerph8051368

Spatial Multicriteria Decision Analysis of Flood Risks in Aging-Dam Management in China: A Framework and Case Study

State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, China
Dam Safety Management Department, the Ministry of Water Resources of China, Nanjing 210029, China
Hydraulic Investigations and Design Institute of Chuzhou, Chuzhou 239000, China
Authors to whom correspondence should be addressed.
Received: 8 March 2011 / Revised: 15 April 2011 / Accepted: 16 April 2011 / Published: 4 May 2011
(This article belongs to the Special Issue Environmental Health Risk Assessment)
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Approximately 30,000 dams in China are aging and are considered to be high-level risks. Developing a framework for analyzing spatial multicriteria flood risk is crucial to ranking management scenarios for these dams, especially in densely populated areas. Based on the theories of spatial multicriteria decision analysis, this report generalizes a framework consisting of scenario definition, problem structuring, criteria construction, spatial quantification of criteria, criteria weighting, decision rules, sensitivity analyses, and scenario appraisal. The framework is presented in detail by using a case study to rank dam rehabilitation, decommissioning and existing-condition scenarios. The results show that there was a serious inundation, and that a dam rehabilitation scenario could reduce the multicriteria flood risk by 0.25 in the most affected areas; this indicates a mean risk decrease of less than 23%. Although increased risk ( View Full-Text
Keywords: aging dams; flood-risk analysis; dam removal; dam decommissioning aging dams; flood-risk analysis; dam removal; dam decommissioning

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Yang, M.; Qian, X.; Zhang, Y.; Sheng, J.; Shen, D.; Ge, Y. Spatial Multicriteria Decision Analysis of Flood Risks in Aging-Dam Management in China: A Framework and Case Study. Int. J. Environ. Res. Public Health 2011, 8, 1368-1387.

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