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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: Accepted (Aug 2 2004)
Units: Feet
Control Station: 8443970 Boston, MA
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW9.45Mean Higher-High Water
MHW8.96Mean High Water
MTL4.59Mean Tide Level
MSL4.70Mean Sea Level
DTL4.72Mean Diurnal Tide Level
MLW0.22Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-0.55Station Datum
GT9.45Great Diurnal Range
MN8.74Mean Range of Tide
DHQ0.49Mean Diurnal High Water Inequality
DLQ0.23Mean Diurnal Low Water Inequality
HWI3.71Greenwich High Water Interval (in hours)
LWI9.89Greenwich Low Water Interval (in hours)
Max Tide13.05Highest Observed Tide
Max Tide Date & Time03/17/1956 00:00Highest Observed Tide Date & Time
Min Tide-3.25Lowest Observed Tide
Min Tide Date & Time12/30/1963 00:00Lowest Observed Tide Date & Time
HATHighest Astronomical Tide
HAT Date & Time HAT Date and Time
LATLowest Astronomical Tide
LAT Date & Time LAT Date and Time
Tidal Datum Analysis Periods
01/01/1970 - 12/31/1976




Products available at 8447180 Sandwich, MA

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