全球智库信息集成服务系统

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.