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Datums for 8449130, Nantucket Island MA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8449130, Nantucket Island, MA
Status: Accepted (Apr 17 2003)
Units: Feet
Control Station:
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW3.57Mean Higher-High Water
MHW3.23Mean High Water
MTL1.72Mean Tide Level
MSL1.77Mean Sea Level
DTL1.79Mean Diurnal Tide Level
MLW0.20Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-3.00Station Datum
GT3.57Great Diurnal Range
MN3.04Mean Range of Tide
DHQ0.34Mean Diurnal High Water Inequality
DLQ0.20Mean Diurnal Low Water Inequality
HWI4.87Greenwich High Water Interval (in hours)
LWI10.64Greenwich Low Water Interval (in hours)
Max Tide7.87Highest Observed Tide
Max Tide Date & Time10/30/1991 17:30Highest Observed Tide Date & Time
Min Tide-2.14Lowest Observed Tide
Min Tide Date & Time02/12/1981 12:30Lowest Observed Tide Date & Time
HAT4.41Highest Astronomical Tide
HAT Date & Time11/14/1989 17:24HAT Date and Time
LAT-0.82Lowest Astronomical Tide
LAT Date & Time04/27/1994 11:42LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 12/31/2001




Products available at 8449130 Nantucket Island, MA

Revised: 08/08/2018
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