Masking out places with elevation below 5 m from a DEM

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I have a DEM of a study region; I want to modify the DEM in order to reflect the coastline outlook when the sea level was 5 meters higher than today. What I have done so far is to use 'Raster Calculator' with the quite simple following formula: DEM >= 5. Then, in the returned raster, I have set to 'hollow' the 1 values (representing cells with elevation >= 5m), and to 'blue' the 0 values. How and by which tools can I use the obtained raster as a mask to modify the original DEM. In other words, I want to mask out (i.e., remove) places with elevation below 5 m from the original DEM. I am using arcGIS 10.1 with advanced silence.



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