Levees and the National Flood Insurance Program Improving Policies and Practices (2013) / Chapter Skim
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Appendix C: Glossary of Terms
Appendix C: Glossary of Terms
Pages 165-170
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From page 165... ...
Epistemic uncertainty: A type of uncertainty attributed to the lack of understanding about a physical process or system that must be modeled, referred to as knowledge-based uncertainty. Executive Order 11988: Codified in 1977, the order requires federal agencies to "avoid to the extent possible the long and short term adverse impacts associated with the occupancy and modification of floodplains and to avoid direct or indirect support of floodplain developments wherever there is a practicable alternative." It required each agency to "provide leadership and take action to reduce the risk of flood loss, to minimize the impacts of floods on human safety, health, and welfare, and to restore and preserve the natural and beneficial values served by floodplains in carrying out its responsibilities." 165
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From page 166... ...
related erosion areas having special hazards have been designated as Zones A, M, and/or E." Flood Insurance Rate Map (FIRM) : As defined by 44 CFR §59.1: "An official map of a community, on which the Federal Insurance Administrator has delineated both the special hazard areas and the risk premium zones applicable to the community." Flood insurance study (FIS)
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From page 167... ...
: "Structural measures such as dams, levees, and floodwalls alter the characteristics of the flood and reduce the probability of flooding in the location of interest. Nonstructural measures alter the impact or consequences of flooding and have little to no impact on the characteristics of the flood." One percent annual chance flood: A term commonly used to describe a hydrologic event that has in any year a 1 in 100 chance of being equaled or exceeded.
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From page 168... ...
Risk analysis: A detailed examination to understand the nature of adverse consequences from a particular event to human life, property, or the environmental; an analytical process that provides information about or quanti fies probabilities and consequences of an unwanted event. Often, broad definitions of risk analysis include examination of risk communication, risk perception, and risk management alternatives.
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From page 169... ...
2010b. Proceedings of the Workshop Exploration of Tolerable Risk Guidelines for the USACE Levee Safety Program.
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Key Terms
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