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Decision analysis and risk analysis ...

Zheng, Pearl Qing Yuan.

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Decision analysis and risk analysis of multiple dam removals: Optimizing tradeoffs among dam failure risk, removal cost, and ecosystem benefit.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Decision analysis and risk analysis of multiple dam removals: Optimizing tradeoffs among dam failure risk, removal cost, and ecosystem benefit./
作者:	Zheng, Pearl Qing Yuan.
面頁冊數:	239 p.
附註:	Source: Dissertation Abstracts International, Volume: 71-01, Section: B, page: 0186.
Contained By:	Dissertation Abstracts International71-01B.
標題:	Environmental Management. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3392423
ISBN:	9781109580532

Decision analysis and risk analysis of multiple dam removals: Optimizing tradeoffs among dam failure risk, removal cost, and ecosystem benefit.
Zheng, Pearl Qing Yuan.

Decision analysis and risk analysis of multiple dam removals: Optimizing tradeoffs among dam failure risk, removal cost, and ecosystem benefit. - 239 p.

Source: Dissertation Abstracts International, Volume: 71-01, Section: B, page: 0186.

Thesis (Ph.D.)--The Johns Hopkins University, 2009.

Decisions on dam removal or retention are complex and sometimes controversial because of economic and ecological tradeoffs, diverse stakeholders, as well as public safety concerns. This dissertation combines mathematical optimization, ecological models, and a public survey to analyze the benefits and costs of removing aging and deteriorating U.S. dams on tributaries to Lake Erie, where dam removal is considered as not only a viable habitat and ecosystem restoration tool, but also an effective management option to improve public safety.

ISBN: 9781109580532Subjects--Topical Terms:

893809
Environmental Management.

Decision analysis and risk analysis of multiple dam removals: Optimizing tradeoffs among dam failure risk, removal cost, and ecosystem benefit.
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245 1 0 $a Decision analysis and risk analysis of multiple dam removals: Optimizing tradeoffs among dam failure risk, removal cost, and ecosystem benefit.
300 $a 239 p.
500 $a Source: Dissertation Abstracts International, Volume: 71-01, Section: B, page: 0186.
500 $a Adviser: Benjamin F. Hobbs.
502 $a Thesis (Ph.D.)--The Johns Hopkins University, 2009.
520 $a Decisions on dam removal or retention are complex and sometimes controversial because of economic and ecological tradeoffs, diverse stakeholders, as well as public safety concerns. This dissertation combines mathematical optimization, ecological models, and a public survey to analyze the benefits and costs of removing aging and deteriorating U.S. dams on tributaries to Lake Erie, where dam removal is considered as not only a viable habitat and ecosystem restoration tool, but also an effective management option to improve public safety.
520 $a Using multiobjective analysis, the main purpose of this dissertation is to analyze the cost-effectiveness of single or multiple dam removals by examining the interactions between dam removal actions and system responses and quantifying impacts upon social, ecological, and economic objectives of importance to decision managers and stakeholders. More specifically, this research develops and integrates multidisciplinary models for optimal selection of dams to be removed by considering three fundamental objectives: financial cost, lake-wide ecosystem health, and public safety.
520 $a Three multiobjective analysis models have been developed, each focusing on different aspect of the problems and tradeoffs and each with a case study in the Lake Erie basin. In particular, the first case study takes account of all possible financial costs of removing ( $2 .7M/yr) or keeping ( $1 .7M/yr) the Ballville Dam in the Sandusky River in the west of Lake Erie. The Ballville dam is a large, aging, and substandard dam that is currently providing water supply service and blocking historic walleye (Sander vitreus) spawning habitat. Apparently, removing the Ballville Dam has ecological benefits, but the question is whether it is worth doing so. The results show that such decision largely depends on value judgments from stakeholders. The second case study includes 139 dams in ten U.S. watersheds in the Lake Erie basin. In this case, the dam removal alternatives increase from two (the Ballville Dam case study) to 2139. In the second case study, explicit consideration is given to the linkage between tributary habitat and the Lake Erie ecosystem. The results describe tradeoffs among financial cost, walleye-related criteria, and other lake-wide and community-based ecological and socio-economic criteria. The third case study focuses on reducing safety risks from dam failure, based on risks assessed using a survey of dam safety professionals. The same 139 dams are evaluated and the results reveal tradeoffs among three fundamental objectives aforementioned.
520 $a Overall, findings from three case studies communicate the general nature of the tradeoffs and complex interactions among dam removal related expenditures and risk management options, habitat and ecosystem restorations, and fish community dynamics; and more importantly, show the effect of alternative human value judgments on making the science-informed decisions to remove aging and unsafe U.S. dams.
590 $a School code: 0098.
650 4 $a Environmental Management. $3 893809
650 4 $a Water Resource Management. $3 1669219
650 4 $a Engineering, Environmental. $3 783782
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710 2 $a The Johns Hopkins University. $3 1017431
773 0 $t Dissertation Abstracts International $g 71-01B.
790 1 0 $a Hobbs, Benjamin F., $e advisor
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791 $a Ph.D.
792 $a 2009
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3392423