Tag Archives: NGVD 29
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“Sea Level Datum of 1929” — Did You Know?
I recently was consulted about the use of the term “Sea Level Datum of 1929” on plans and in engineering reports dating from the 1940-60s. The inquirer was concerned that this possibly meant that the work was based on something other than the National Geodetic Vertical Datum of 1929 (NGVD 29). As is often the...