Datums for 8512451, PONQUOGUE POINT NY


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8512451, PONQUOGUE POINT, NY
Status: Accepted (Sep 26 2017)
Units: Feet
Control Station: 8510560 Montauk, NY
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW3.18Mean Higher-High Water
MHW2.93Mean High Water
MTL1.52Mean Tide Level
MSL1.52Mean Sea Level
DTL1.59Mean Diurnal Tide Level
MLW0.13Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD881.82North American Vertical Datum of 1988
STND-4.68Station Datum
GT3.18Great Diurnal Range
MN2.80Mean Range of Tide
DHQ0.26Mean Diurnal High Water Inequality
DLQ0.13Mean Diurnal Low Water Inequality
HWI0.17Greenwich High Water Interval (in hours)
LWI6.69Greenwich Low Water Interval (in hours)
Max Tide5.57Highest Observed Tide
Max Tide Date & Time01/03/2014 14:12Highest Observed Tide Date & Time
Min Tide-1.74Lowest Observed Tide
Min Tide Date & Time11/12/1990 10:54Lowest Observed Tide Date & Time
HAT4.11Highest Astronomical Tide
HAT Date & Time10/16/1993 12:42HAT Date and Time
LAT-0.85Lowest Astronomical Tide
LAT Date & Time02/09/1997 20:18LAT Date and Time
Tidal Datum Analysis Periods
07/01/1989 - 06/30/1990




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