NOAA Web Site Link Tides and Currents Home Page Transparent placeholder image

Notice: We are experiencing a wide spread communication outage affecting the availability of water level and meteorological data for some of our stations, as well as several critical bridge clearance measurements. We are diligently working to resolve this data outage. Please direct all questions to tide.predictions@noaa.gov or call (301) 713-2815.

Datums for 8511629, Sag Harbor NY


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8511629, Sag Harbor, 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
MHHW2.87Mean Higher-High Water
MHW2.58Mean High Water
MTL1.38Mean Tide Level
MSL1.43Mean Sea Level
DTL1.44Mean Diurnal Tide Level
MLW0.17Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD881.75North American Vertical Datum of 1988
STND-24.30Station Datum
GT2.86Great Diurnal Range
MN2.41Mean Range of Tide
DHQ0.28Mean Diurnal High Water Inequality
DLQ0.17Mean Diurnal Low Water Inequality
HWI3.04Greenwich High Water Interval (in hours)
LWI9.29Greenwich 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
HAT3.67Highest Astronomical Tide
HAT Date & Time10/15/1989 15:06HAT 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 8511629 Sag Harbor, NY

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