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CONSEQUENCE ESTIMATION for DAM FAILURES

HEC-FIA is a stand-alone, GIS-enabled model for estimating flood impacts due to flooding used by the United States Army Corps of Engineers. The software tool can generate required economic and population data for a study area from readily available data sets and use the data to compute urban and agricultural economic flood damage, area inundated, number of structures inundated, population at risk, and loss of life. These results can be used to inform risk assessments within the dam and levee safety programs as well as the Corps traditional planning process. All damage assessments in HEC-FIA are computed on a structure-by-structure basis using inundated area depth and arrival grids, or hydrograph data. The life loss compute contained in HEC-FIA includes consideration of the effectiveness of warning systems, community responses to alert, and evacuation of large populations. HEC-FIA is also capable of analyzing economic and life safety benefits from various non-structural flood damage reduction measures, including installation of flood warning systems, public education campaigns, and flood-proofing or raising of individual structures. These estimates can be computed with uncertainty for single catastrophic failures, so that decision makers can be aware of which parameters contribute the most uncertainty to the life loss estimations.