Datums for 8443970, Boston MA

NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8443970, Boston, MA
Status: Accepted (Apr 17 2003)
Units: Feet
Control Station:
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
MHHW10.28Mean Higher-High Water
MHW9.84Mean High Water
MTL5.09Mean Tide Level
MSL5.21Mean Sea Level
DTL5.14Mean Diurnal Tide Level
MLW0.35Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD885.51North American Vertical Datum of 1988
STND-3.52Station Datum
GT10.27Great Diurnal Range
MN9.49Mean Range of Tide
DHQ0.44Mean Diurnal High Water Inequality
DLQ0.34Mean Diurnal Low Water Inequality
HWI3.74Greenwich High Water Interval (in hours)
LWI9.93Greenwich Low Water Interval (in hours)
Max Tide15.17Highest Observed Tide
Max Tide Date & Time01/04/2018 17:42Highest Observed Tide Date & Time
Min Tide-3.72Lowest Observed Tide
Min Tide Date & Time03/24/1940 00:00Lowest Observed Tide Date & Time
HAT12.33Highest Astronomical Tide
HAT Date & Time11/15/2016 16:06HAT Date and Time
LAT-2.12Lowest Astronomical Tide
LAT Date & Time01/14/2036 22:54LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 12/31/2001

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