Elevations on Mean Lower Low Water

Datum	Value	Description
MHHW	1.41	Mean Higher-High Water
MHW	1.32	Mean High Water
MTL	0.82	Mean Tide Level
MSL	0.83	Mean Sea Level
DTL	0.71	Mean Diurnal Tide Level
MLW	0.30	Mean Low Water
MLLW	0.00	Mean Lower-Low Water
NAVD88	0.14	North American Vertical Datum of 1988
STND	-4.38	Station Datum
GT	1.41	Great Diurnal Range
MN	1.02	Mean Range of Tide
DHQ	0.09	Mean Diurnal High Water Inequality
DLQ	0.30	Mean Diurnal Low Water Inequality
HWI		Greenwich High Water Interval (in hours)
LWI		Greenwich Low Water Interval (in hours)
Max Tide	13.52	Highest Observed Tide
Max Tide Date & Time	09/08/1900 00:00	Highest Observed Tide Date & Time
Min Tide	-6.28	Lowest Observed Tide
Min Tide Date & Time	01/11/1908 04:00	Lowest Observed Tide Date & Time
HAT	2.14	Highest Astronomical Tide
HAT Date & Time	10/17/1989 00:48	HAT Date and Time
LAT	-1.19	Lowest Astronomical Tide
LAT Date & Time	12/31/1986 15:54	LAT Date and Time

Tidal Datum Analysis Periods
01/01/1997 - 12/31/2001

To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.

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