NOAA Finds No Vertical Movement to Washington Monument Due to 2011 Earthquake [What’s New]

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A survey conducted earlier this year by NOAA’s National Geodetic Survey (NGS) indicates that an August, 2011, earthquake in the region had no discernible impact on the settlement of the Washington Monument. NGS found that the rate of settlement for the Washington Monument, based on multiple measurements taken since 1901, is 0.02 inches per year. This indicates that the monument has settled approximately 2.2 inches since 1901.

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