VICKSBURG DISTRICT LEVEE SAFETY PROGRAM RISK COMMUNICATION 237 - - PowerPoint PPT Presentation
VICKSBURG DISTRICT LEVEE SAFETY PROGRAM RISK COMMUNICATION 237 217 200 80 252 237 217 200 119 174 237 217 200 27 .59 255 0 163 131 239 110 112 62 102 130 255 0 163 132 65 135 92 102 56 120 255 0 163 122 53
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“The views, opinions and findings contained in this report are those of the authors(s) and should not be construed as an official Department of the Army position, policy or decision, unless so designated by other official documentation.”
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Hazard System Performance Consequences
Risk
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217 217 217 200 200 200 255 255 255 163 163 163 131 132 122 239 65 53 110 135 120 112 92 56 62 102 130 102 56 48 130 120 111 237 237 237 80 119 27 252 174 .59
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Q: Why assess risk? A: It is important to know how levees are expected to perform and what the potential consequences of non-performance would be. Putting levees in a risk context is a consistent and credible way to prioritize actions. USACE uses risk assessments to prioritize life safety risks for its own levee safety activities, and to provide a basis for communicating risk to levee sponsors and stakeholders to make more informed decisions. Q: What does a risk assessment mean to levee districts, stakeholders, and the public? A: Levee sponsors and stakeholders should use risk assessments to look at the entire levee system as a whole. It can be used to help the levee district improve or focus on structural and non structural levee components that can help to reduce risk. The levee sponsor is responsible for
provide advisory help, technical assistance, or cost-shared construction. Q: What is an LSAC? A: Levee Safety Action Classification (LSAC) is a number or verbal description of relative risk. It is determined through a risk assessment using the data from the annual and periodic levee inspections of levees, and available hydraulic and economic data. The LSAC system is intended to provide a consistent and systematic approach to identifying the risk of levee failure. LSAC is used to communicate the relative risk for living behind a particular levee and provide an initial quantitative risk estimate to assist local, state, and federal stakeholders in identification and prioritization of funding needs for levees. Q: What does USACE use the LSAC for? A:Initially, USACE will use the LSAC as a basis to determine nationwide priorities for further action on levee systems. The LSAC rating will determine the priority a particular levee has for available federal funding, and will also help identify whether Interim Risk Reduction Measures (IRRM) may be needed. Q: How can we improve our LSAC? A: LSAC should not be thought of as “good” or “bad”. LSAC indicates the level of risk associated with a levee system compared to other levee systems in the USACE inventory. The focus should be on reducing flood risk as much as possible, not on the LSAC. As flood risk decreases, LSAC will reflect that decreased risk. However, in some cases LSAC may not change significantly due to large population or significant development within the leveed area. In these instances LSAC communicates the need to stay diligent and continue to invest in flood risk management. Q: How does the LSAC number impact our community’s participation in the FEMA National Flood Insurance Program (NFIP)? A: The LSAC number does not directly impact a community's participation in the NFIP. For the purpose of administering the NFIP, levees are evaluated in accordance with their design, operation, and maintenance for the 1% annual chance exceedance event (100 year event). LSAC does not communicate specifically about the 1% event or about individual flood risk. LSAC is determined based upon the total life-safety risk experienced in a leveed area. Q: How is USACE going to communicate levee risk and benefits to the public? A: The Levee Sponsors and community leaders will be given the opportunity to communicate levee risk and benefit information to the public. USACE will assist in the communication efforts to the extent requested by the levee sponsor or community leaders. LSAC is not the key information, rather the benefits, risk, risk drivers, and possible risk reduction actions are the key message the public should receive. The actual LSAC number need not be communicated.
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