Hydrologic Analysis of Leveed Interior Areasby Harry W. Dotson, Hydrologic Engineering Cent, Davis, United States,
Michael W. Burnham, Hydrologic Engineering Cent, Davis, United States,
Abstract: Flood damage reduction projects that include levees or flood walls usually involve special problems associated with isolated interior areas. Storm runoff patterns may be altered and remedial measures are generally required to prevent increased flooding in the interior area due to natural flow blockage. A new computer program has been developed by the Hydrologic Engineering Center, U.S. Army Corps of Engineers entitled, 'Interior Flood Hydrology, HEC-IFH' (HEC 1992). The program can be used to perform the required hydrologic analyses to characterize the interior area flood hazard and to evaluate the performance of potential flood damage reduction measures and plans. The program is particularly powerful for performing long, period-of-record simulations. The program operates in an interactive IBM compatible Personal Computer environment, allowing full screen interactive data entry and analysis of results. Annual or partial series interior elevation-frequency relationships are derived directly, using hypothetical event or continuous, historical period-of-record analysis for various measures such as gravity outlets, pumps, and diversions. The paper describes the analysis of interior flood damage reduction measures using the HEC-IFH program.
Subject Headings: Floods | Damage (structural) | Levees and dikes | Computer software | Storms | Runoff | Flow measurement
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