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Datums for 8511907, Greenport NY


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8511907, Greenport, NY
Status: Accepted (Nov 3 2014)
Units: Feet
Control Station: 8461490 New London, Thames River, CT
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW2.90Mean Higher-High Water
MHW2.62Mean High Water
MTL1.40Mean Tide Level
MSL1.45Mean Sea Level
DTL1.45Mean Diurnal Tide Level
MLW0.18Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-25.35Station Datum
GT2.90Great Diurnal Range
MN2.44Mean Range of Tide
DHQ0.28Mean Diurnal High Water Inequality
DLQ0.18Mean Diurnal Low Water Inequality
HWI3.21Greenwich High Water Interval (in hours)
LWI9.28Greenwich 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
HAT3.69Highest Astronomical Tide
HAT Date & Time10/15/1989 15:12HAT Date and Time
LAT-0.76Lowest Astronomical Tide
LAT Date & Time01/21/1996 22:12LAT Date and Time
Tidal Datum Analysis Periods
05/01/2014 - 07/31/2014




Products available at 8511907 Greenport, NY

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