mean lower low water definition
mean lower low water means the tidal datum plane of the average of the lower of the two low waters of each day, as would be established by the National Geodetic Survey, at any place subject to tidal influence;
mean lower low water or “MLLW” means the 0.0 tidal elevation. It is determined by averaging each day’s lowest tide at a particular location over a period of 19 years. It is the tidal datum for vertical tidal references in the salt water area.
mean lower low water or “MLLW” means the mean elevation of all lower tides, generally occurring twice each day in Whatcom County at any given location on the marine shoreline.
More Definitions of mean lower low water
mean lower low water means the elevation datum (0.00 feet) referenced on the flood insurance rate maps. MLLE is 10.0 feet below the National Geodetic Vertical Datum of 1929 (NGVD) in Dillingham.
mean lower low water means a tidal datum used in referring to tidelands or the tidally affected portion of the stream, that is equal to the average of the lower of the two low tides of each day over a 19-year Metonic cycle, as established by the National Ocean Service of the National Oceanic and Atmospheric Administration.
mean lower low water means the tidal datum plane of the average of the lower of the two low waters of each day as has or may be established by the United States Coast and Geodetic Survey.