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Current Datum Value: 4.71

Datums for 8448558, Edgartown MA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8448558, Edgartown, MA
Status: Accepted (Feb 23 2005)
Units: Feet
Control Station: 8449130 Nantucket Island, MA
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW2.68Mean Higher-High Water
MHW2.36Mean High Water
MTL1.29Mean Tide Level
MSL1.43Mean Sea Level
DTL1.34Mean Diurnal Tide Level
MLW0.22Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-4.71Station Datum
GT2.68Great Diurnal Range
MN2.13Mean Range of Tide
DHQ0.32Mean Diurnal High Water Inequality
DLQ0.23Mean Diurnal Low Water Inequality
HWI4.70Greenwich High Water Interval (in hours)
LWI10.19Greenwich Low Water Interval (in hours)
Max TideHighest Observed Tide
Max Tide Date & Time Highest Observed Tide Date & Time
Min TideLowest Observed Tide
Min Tide Date & Time Lowest Observed Tide Date & Time
HAT3.15Highest Astronomical Tide
HAT Date & Time12/12/1989 15:42HAT Date and Time
LAT-0.45Lowest Astronomical Tide
LAT Date & Time05/17/1999 11:36LAT Date and Time
Tidal Datum Analysis Periods
08/06/2004 - 09/05/2004




Products available at 8448558 Edgartown, MA

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services