Weather Dictionary / Glossary of Terms

Mean Low Water


   Weather TermDescription / Definition
   Mean Low Water (MLW) - A tidal datum. The average of all the low water heights observed over the National Tidal Datum Epoch. For stations with shorter series, simultaneous observational comparisons are made with a control tide station in order to derive the equivalent datum of the National Tidal Datum Epoch.


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Data courtesy of NOAA - National Oceanic and Atmospheric Administration