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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
DatumValueDescription
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 Tide11.58Highest Observed Tide
Max Tide Date & Time02/07/1978 10:36Highest Observed Tide Date & Time
Min Tide-7.24Lowest Observed Tide
Min Tide Date & Time03/24/1940 00:00Lowest Observed Tide Date & Time
HAT12.43Highest Astronomical Tide
HAT Date & Time11/05/1998 16:30HAT Date and Time
LAT-2.27Lowest Astronomical Tide
LAT Date & Time12/23/1999 22:30LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 12/31/2001




Products available at 8443970 Boston, MA

Revised: 10/15/2013
NOAA / National Ocean Service
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