Water Level
http://inspire.ec.europa.eu/codelist/WaterLevelValue
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equinoctial spring low water
The level of low water springs near the time of an equinox.
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higher high water
The highest of the high waters (or single high water) of any specified tidal day due to the declination A1 effects of the moon and sun.
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higher high water large tide
The average of the highest high waters, one from each of 19 years of observations.
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highest astronomical tide
The highest tidal level, which can be predicted to occur under average meteorological conditions and under any combination of astronomical conditions.
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highest high water
The highest water level observed at a location.
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high water
The highest level reached at a location by the water surface in one tidal cycle.
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high water springs
An arbitrary level, approximating that of mean high water springs.
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indian spring high water
A tidal surface datum approximating the level of the mean of the higher high water at spring tides.
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indian spring low water
A tidal surface datum approximating the level of the mean of the lower low water at spring tides.
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local datum
An arbitrary datum defined by an authority of a local harbour, from which levels and tidal heights are measured by that authority.
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lower low water
The lowest of the low waters (or single low water) of any specified tidal day due to the declination A1 effects of the moon and sun.
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lower low water large tide
The average of the lowest low waters, one from each of 19 years of observations.
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lowest astronomical tide
The lowest tide level that can be predicted to occur under average meteorological conditions and under any combination of astronomical conditions.
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lowest low water
An arbitrary level conforming to the lowest tide observed at a location, or somewhat lower.
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lowest low water springs
An arbitrary level conforming to the lowest water level observed at a location at spring tides during a period shorter than 19 years.
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low water
An approximation of mean low water adopted as the reference level for a limited region, irrespective of better determinations later.
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low water datum
An approximation of mean low water that has been adopted as a standard reference for a limited area.
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low water springs
A level approximating that of mean low water springs.
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mean higher high water
The average height of higher high waters at a location over a 19-year period.
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mean higher high water springs
The average height of higher high water at spring tides at a location.
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mean higher low water
The average of the higher low water height of each tidal day observed over a National Tidal Datum Epoch.
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mean high water
The average height of all high waters at a location over a 19-year period.
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mean high water neaps
The average height of the high waters of the neap tide.
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mean high water springs
The average height of the high waters of spring tides.
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mean lower high water
The average of the lower high water height of each tidal day observed over a National Tidal Datum Epoch.
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mean lower low water
The average height of the lower low waters at a location over a 19-year period.
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mean lower low water springs
The average height of lower low water at spring tides at a location.
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mean low water
The average height of all low waters at a location over a 19-year period.
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mean low water neaps
The average height of the low waters of the neap tide.
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mean low water springs
The average height of the low waters of spring tides.
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mean sea level
The average height of the sea at a tide station measured from a fixed predetermined reference level.
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mean tide level
The arithmetic mean of mean high water and mean low water.
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mean water level
The average of all hourly water levels over the available period of record.
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nearly highest high water
An arbitrary level approximating the highest water level observed at a location, usually equivalent to the high water springs.
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nearly lowest low water
A level approximating the lowest water level observed at a location, usually equivalent to Indian spring low water.
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tropic higher high water
The highest of the high waters (or single high water) of the tides occurring semimonthly when the effect of the Moon's maximum declination is greatest.
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tropic lower low water
The lowest of the low waters (or single low water) of the tides occurring semimonthly when the effect of the Moon's maximum declination is greatest.
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