Datums for 8444162, Boston Light MA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8444162, Boston Light, MA
Status: Superseded (Apr 17 2003) (Accepted Jan 30 2001)
Units: Feet
Control Station: 8443970 Boston, MA
T.M.: 75
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW9.83Mean Higher-High Water
MHW9.40Mean High Water
MTL4.85Mean Tide Level
MSL4.90Mean Sea Level
DTL4.91Mean Diurnal Tide Level
MLW0.30Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-7.31Station Datum
GT9.83Great Diurnal Range
MN9.09Mean Range of Tide
DHQ0.43Mean Diurnal High Water Inequality
DLQ0.31Mean Diurnal Low Water Inequality
HWI3.70Greenwich High Water Interval (in hours)
LWI9.88Greenwich Low Water Interval (in hours)
Max Tide11.87Highest Observed Tide
Max Tide Date & Time02/21/2004 16:48Highest Observed Tide Date & Time
Min Tide-2.77Lowest Observed Tide
Min Tide Date & Time02/12/2001 00:54Lowest Observed Tide Date & Time
HAT11.86Highest Astronomical Tide
HAT Date & Time11/15/2016 16:06HAT Date and Time
LAT-2.08Lowest Astronomical Tide
LAT Date & Time01/14/2036 22:48LAT Date and Time
Tidal Datum Analysis Periods
09/01/2000 - 12/31/2000




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