Illustration showing a portion of a Flood Insurance Rate Map (FIRM), which includes a house site and stream segment in Zone AE with demarcated base flood elevations. The house site is also shown enlarged to demonstrate how a house elevated on fill dirt might be incorrectly shown in a 1% chance floodplain due to the limitation of topographic information on the source map used to prepare the FIRM. A Letter of Map Amendment (LOMA) would be needed to correct the FIRM.
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