Datums for 8447180, Sandwich MA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8447180, Sandwich, MA
Status: Superseded (Apr 17 2003) (Accepted Jul 27 1998)
Units: Feet
Control Station: 8443970 Boston, MA
T.M.: 75
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW9.51Mean Higher-High Water
MHW9.08Mean High Water
MTL4.70Mean Tide Level
MSL4.81Mean Sea Level
DTL4.76Mean Diurnal Tide Level
MLW0.32Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-0.32Station Datum
GT9.51Great Diurnal Range
MN8.76Mean Range of Tide
DHQ0.43Mean Diurnal High Water Inequality
DLQ0.32Mean Diurnal Low Water Inequality
HWI3.69Greenwich High Water Interval (in hours)
LWI9.88Greenwich Low Water Interval (in hours)
Max Tide13.28Highest Observed Tide
Max Tide Date & Time03/17/1956 00:00Highest Observed Tide Date & Time
Min Tide-3.02Lowest Observed Tide
Min Tide Date & Time12/30/1963 00:00Lowest Observed Tide Date & Time
HAT11.63Highest Astronomical Tide
HAT Date & Time11/27/2034 16:42HAT Date and Time
LAT-2.12Lowest Astronomical Tide
LAT Date & Time11/15/2016 22:36LAT Date and Time
Tidal Datum Analysis Periods
01/01/1960 - 12/31/1976




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