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Datums for 8515586, NORTHPORT, NORTHPORT BAY NY


Elevations on Station Datum

Station: 8515586, NORTHPORT, NORTHPORT BAY, NY
Status: Accepted (May 7 2003)
Units: Feet
T.M.: 75
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW10.53Mean Higher-High Water
MHW10.18Mean High Water
MTL6.55Mean Tide Level
MSL6.56Mean Sea Level
DTL6.61Mean Diurnal Tide Level
MLW2.91Mean Low Water
MLLW2.69Mean Lower-Low Water
NAVD88
STND0.00Station Datum
GT7.85Great Diurnal Range
MN7.27Mean Range of Tide
DHQ0.35Mean Diurnal High Water Inequality
DLQ0.23Mean Diurnal Low Water Inequality
HWI3.71Greenwich High Water Interval (in hours)
LWI10.21Greenwich Low Water Interval (in hours)
MaximumHighest Observed Water Level
Max Date & Time Highest Observed Water Level Date and Time
MinimumLowest Observed Water Level
Min Date & Time Lowest Observed Water Level Date and Time
HATHighest Astronomical Tide
HAT Date & Time HAT Date and Time
LATLowest Astronomical Tide
LAT Date & Time LAT Date and Time
Tidal Datum Analysis Periods
06/01/1990 - 08/31/1990
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 8515586 NORTHPORT, NORTHPORT BAY, NY

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services