Datums for 8510560, Montauk NY


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8510560, Montauk, NY
Status: Superseded (Apr 17 2003) (Accepted Apr 30 1998)
Units: Feet
Control Station:
T.M.: 0
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW2.59Mean Higher-High Water
MHW2.31Mean High Water
MTL1.24Mean Tide Level
MSL1.27Mean Sea Level
DTL1.30Mean Diurnal Tide Level
MLW0.18Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-3.62Station Datum
GT2.59Great Diurnal Range
MN2.13Mean Range of Tide
DHQ0.28Mean Diurnal High Water Inequality
DLQ0.18Mean Diurnal Low Water Inequality
HWI1.56Greenwich High Water Interval (in hours)
LWI8.09Greenwich Low Water Interval (in hours)
Max Tide8.68Highest Observed Tide
Max Tide Date & Time08/31/1954 10:00Highest Observed Tide Date & Time
Min Tide-3.54Lowest Observed Tide
Min Tide Date & Time02/02/1976 18:00Lowest Observed Tide Date & Time
HAT3.34Highest Astronomical Tide
HAT Date & Time10/27/2011 13:36HAT Date and Time
LAT-0.68Lowest Astronomical Tide
LAT Date & Time03/31/2033 08:24LAT Date and Time
Tidal Datum Analysis Periods
01/01/1960 - 12/31/1971
01/01/1973 - 12/31/1976
01/01/1978 - 12/31/1978




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