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Datums for 8447605, HYANNISPORT MA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8447605, HYANNISPORT, MA
Status: Accepted (Feb 9 2005)
Units: Feet
Control Station: 8449130 Nantucket Island, MA
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW3.80Mean Higher-High Water
MHW3.45Mean High Water
MTL1.85Mean Tide Level
MSL1.92Mean Sea Level
DTL1.90Mean Diurnal Tide Level
MLW0.25Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-12.38Station Datum
GT3.80Great Diurnal Range
MN3.19Mean Range of Tide
DHQ0.35Mean Diurnal High Water Inequality
DLQ0.26Mean Diurnal Low Water Inequality
HWI4.74Greenwich High Water Interval (in hours)
LWI10.37Greenwich Low Water Interval (in hours)
Max TideHighest Observed Tide
Max Tide Date & Time Highest Observed Tide Date & Time
Min TideLowest Observed Tide
Min Tide Date & Time Lowest Observed Tide Date & Time
HAT4.78Highest Astronomical Tide
HAT Date & Time06/23/1986 05:06HAT Date and Time
LAT-0.83Lowest Astronomical Tide
LAT Date & Time12/23/1999 23:12LAT Date and Time
Tidal Datum Analysis Periods
06/01/1994 - 08/31/1994




Products available at 8447605 HYANNISPORT, MA

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