Mean sea level (MSL) is the average (mean) height of the sea, with reference to a suitable reference surface. Defining the reference level however, involves complex measurement, and accurately determining MSL can prove difficult. We do our best here to determine the MSL for you per your address. No other website does that.

Sea level is also rising as a result of increasing concentration of greenhouse gases in the atmosphere. Sea level rise contributes to coastal erosion and inundation of low-lying coastal regions, particularly during extreme sea level events. View our Flood Map to determine your risk.

On this web site, we attempt to simplify the process and give you the results in an easy to read layout.
Simply click on the map on your specific address or you can write your address to find it. After that, please click My Sea Level to get your results.
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