G2TT
来源类型Research Reports
规范类型报告
DOIhttps://doi.org/10.7249/RR2139
来源IDRR-2139-DSC
Decision Support Tool for the San Francisco Bay-Delta Levees Investment Strategy: Documentation and Use
David G. Groves; Nidhi Kalra; James Syme; Hollie Ellis; Charles L. Gardiner; Lawrence H. Roth
发表日期2019
出版者RAND Corporation
出版年2019
页码61
语种英语
结论

The decision support tool aided the Delta Stewardship Council in developing a Delta Levees Investment Strategy through four key steps.

  • It compiled and displayed information about vulnerable assets throughout the Delta.
  • It estimated the probability of flooding and the associated risks to lives, property, water supply, habitat, and other Delta assets.
  • It provided interactive visualizations to support deliberations over how to weigh different types of risks to define high-risk islands.
  • It assimilated and displayed results of analyses of how different levee investments would reduce risk.

The Delta Levees Investment Strategy analysis seeks to prioritize investments based on how they meet important goals for the state — to reduce flood risks to lives and property, to water supply reliability, and to Delta ecosystem function — and to do so efficiently.

  • The foundation for this analysis is estimates of flooding probability due to seismic and hydrologic events for each leveed island and tract in the Delta.
  • These flooding calculations are then combined with estimates of different consequences of flooding (e.g., to lives, property, water supply, habitat, and Delta as Place) using a classical "probability x consequence" framing to calculate risk.
摘要
  • The decision support tool and supporting risk models were developed to provide continuing support of the Council for setting levee investment priorities. In the future, this could be done by refining the risk estimates through improved data and reconsidering how the islands compare in terms of the different types of risks.
  • This type of investment portfolio analysis could be conducted with a more comprehensive set of alternative levee investments and other risk reduction options to develop a balanced portfolio of cost-effectiveness actions to reduce risk.
  • The decision support tool can also evaluate investments that would improve the performance of the levees, and include other desirable features such as ecosystem enhancements.
主题California ; Decisionmaking ; Flooding ; Infrastructure Finance ; Water Resources Management
URLhttps://www.rand.org/pubs/research_reports/RR2139.html
来源智库RAND Corporation (United States)
引用统计
资源类型智库出版物
条目标识符http://119.78.100.153/handle/2XGU8XDN/108993
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David G. Groves,Nidhi Kalra,James Syme,et al. Decision Support Tool for the San Francisco Bay-Delta Levees Investment Strategy: Documentation and Use. 2019.
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