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Current Datum Value: 3.88

Datums for 8447435, Chatham, Lydia Cove MA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8447435, Chatham, Lydia Cove, MA
Status: Accepted (Feb 9 2017)
Units: Feet
Control Station: 8449130 Nantucket Island, MA
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW5.50Mean Higher-High Water
MHW5.13Mean High Water
MTL2.65Mean Tide Level
MSL2.76Mean Sea Level
DTL2.75Mean Diurnal Tide Level
MLW0.18Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD882.81North American Vertical Datum of 1988
STND-3.88Station Datum
GT5.51Great Diurnal Range
MN4.95Mean Range of Tide
DHQ0.37Mean Diurnal High Water Inequality
DLQ0.19Mean Diurnal Low Water Inequality
HWI4.87Greenwich High Water Interval (in hours)
LWI11.59Greenwich Low Water Interval (in hours)
Max Tide9.76Highest Observed Tide
Max Tide Date & Time01/03/2014 18:06Highest Observed Tide Date & Time
Min Tide-2.00Lowest Observed Tide
Min Tide Date & Time01/25/2011 03:12Lowest Observed Tide Date & Time
HAT7.32Highest Astronomical Tide
HAT Date & Time12/24/1999 05:48HAT Date and Time
LAT-1.58Lowest Astronomical Tide
LAT Date & Time11/06/1998 12:00LAT Date and Time
Tidal Datum Analysis Periods
09/01/2015 - 08/31/2016




Products available at 8447435 Chatham, Lydia Cove, MA

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