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 (May 14 2020)
Units: Feet
Control Station: 8449130 Nantucket Island, MA
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW5.17Mean Higher-High Water
MHW4.80Mean High Water
MTL2.48Mean Tide Level
MSL2.55Mean Sea Level
DTL2.59Mean Diurnal Tide Level
MLW0.16Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD882.49North American Vertical Datum of 1988
STND-4.19Station Datum
GT5.18Great Diurnal Range
MN4.64Mean Range of Tide
DHQ0.37Mean Diurnal High Water Inequality
DLQ0.17Mean Diurnal Low Water Inequality
HWI4.87Greenwich High Water Interval (in hours)
LWI11.77Greenwich Low Water Interval (in hours)
Max Tide9.45Highest Observed Tide
Max Tide Date & Time01/03/2014 18:06Highest Observed Tide Date & Time
Min Tide-2.31Lowest Observed Tide
Min Tide Date & Time01/25/2011 03:12Lowest Observed Tide Date & Time
HAT7.11Highest Astronomical Tide
HAT Date & Time12/24/1999 05:48HAT Date and Time
LAT-1.79Lowest Astronomical Tide
LAT Date & Time11/06/1998 12:00LAT Date and Time
Tidal Datum Analysis Periods
09/01/2015 - 08/31/2017




Products available at 8447435 Chatham, Lydia Cove, MA