Glossary
Terms & Glossaries of Shipping and Trading
MHW (Mean High Water)
MHW is the highest average level water reaches on an outgoing tide.
Mean High Water (MHW) is the average of all the high water heights observed over the National Tidal Datum Epoch. For stations with shorter series, comparison of simultaneous observations with a control tide station is made in order to derive the equivalent datum of the National Tidal Datum Epoch.
