Mean high water definition

Mean high water means the average height of the high tides over a 19-year period. For shorter periods of observation, “mean high water” means the average height of the high waters after corrections are applied to eliminate known variations and to reduce the result to the equivalent of a mean 19-year value.
Mean high water means a line of contour representing the 18.6 year average as determined by the metonic cycle and/or its equivalent as evidenced by the records, tidal datum, and methodology of the United States coastal geodetic survey within the national oceanic and atmospheric administration.
Mean high water means the average of all the high water levels observed over the national tidal datum epoch.

Examples of Mean high water in a sentence

  • These terms do not include waters above mean high water caused by flood flows, storms, high winds, seismic waves, or other non-lunar phenomena.(b) Mean high water is the average of the height of the diurnal high water at a particular location measured over a lunar cycle of 19 years.

  • Mean high water – the average height of tidal high waters over a 19-year period.

  • Mean high water line – the intersection of the tidal plane of mean high water with the shore.

  • Mean high water is the average height of high waters over a 19-year period.

  • Mean high water (MHW): mean of multi-year maximum water levels; the average water level is measured at a water gauge over a specific period of time (3).


More Definitions of Mean high water

Mean high water means the level of the water surface which is an average of the highest daily tides over a period of at least 29 days.
Mean high water means the average elevation of all high waters recorded at a particular point or station, based on data obtained from the most recent tidal epoch recorded by the NOAA Liberty Bay tidal station, or that of an official successor agency.
Mean high water means a line of contour representing the eighteen and six-tenths
Mean high water means the average height of the high waters over a nineteen (19) year tidal
Mean high water means the level of the water surface which is an average of the highest daily
Mean high water. Mark means the water level corresponding to the natural or ordinary high water mark and is the line which the water impresses on the soil by covering it for sufficient periods of time to deprive the soil of its terrestrial vegetation and destroy its value for commonly accepted agricultural purposes.
Mean high water. The average of all the high water heights observed over a specific 19- year period (currently 1983 through 2001) called the National Tidal Datum Epoch. Also termed Mean High Tide.