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Showing 1 to 5 of 5 for “"Floodplain delineation"”.
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Floodplain and Flood Probability Mapping Using Geodatabases
… presents methods of creating digital maps for floodplain delineation and flood probability studies and storing them in a geodatabase. Methods for creating a geodatabase for water resources outside of a GIS are presented. The geodatabase follows the ArcHydro data model. Methods are also shown …
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Annual Exceedance Probability Analysis
… of flooding at any location within the floodplain. In the process of creating the AEP map, it is necessary to run number of simulations in order to accurately represent the probability distribution of flooding. The objective of this research, given a desktop computer of today's capacity, …
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An Improved Algorithmic Approach to Iterative Floodway Modeling using HECRAS and GIS
… commonly used to perform hydraulic analysis for floodplain delineation studies. In addition to floodplains, the hydraulic analysis also includes modeling a floodway in detailed floodplain study areas. Floodway modeling is an iterative process in which the 1% annual chance flood discharge is …
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Mapping under uncertainity : spatial politics, urban development, and the future of coastal flood risk
… render the computationally efficient 100- year floodplain delineation of questionable effectiveness, equity, and legitimacy for long-term land use planning. Given changing coastal flooding and sea level rise, how can risk mapping inform and improve future urban development? The dissertation: (1) …
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Floodplain Risk Analysis Using Flood Probability and Annual Exceedance Probability Maps
… and model uncertainty on the extents of computed floodplain boundaries. The first approach represents the floodplain boundary as a spatial map of flood probabilities -- with values between 0 and 100%. Instead of representing the floodplain boundary at a certain recurrence interval as a single …