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Definitions for "Mean lower low water"
Keywords:  datum, tidal, epoch, tide, arithmetic
Related Terms: Mean low water, Mean higher high water, Mhhw, Mean high water, Mean tide level, Low water, Mixed tide, Tidal range, Mean sea level, Mhws, Chart datum, Lower low water, Low tide, Sea level, Semidiurnal tide, Neap tides, Higher high water, High tide, High water, Diurnal tide, Tide table, Msl, Flood tide, Asl, Ebb, Ebb tide, Neap tide, Relative sea level, Spring tide, Intertidal, Base level, Tide gauge, Slack water, Llw, Australian height datum, Foreshore, Sea level rise, Subtidal, Offshore waters, Tidal, Deepwater, Shoreline, Dead sea, National geodetic vertical datum of 1929, Coastal waters, Intertidal zone, Double tide, Water level, Ebb current
The average height of the lower low waters over a 19-year period. For shorter periods of observation, corrections are applied to eliminate known variations and reduce the result to the equivalent of a mean 19-year value.
ecy.wa.gov
A tidal datum. The arithmetic mean of the lower low water heights of a mixed tide observed over a specific 19-year Metonic cycle (the National Tidal Datum Epoch). Only the lower low water of each pair of low waters, or the only low water of a tidal day is included in the mean. Federal navigation projects now reference the Mean Lower Low Water.
middletownplanning.com
The arithmetic mean of the lesser of a daily pair of low waters, observed over a specific 19-year cycle called the National Tidal Datum Epoch.
almanac.com
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Keywords:  niveau, bas, mar, basse, plus
" Plus bas "Niveau de marée basse""
ifremer.fr