Datums for 8518639, Port Morris NY


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8518639, Port Morris, NY
Status: Accepted (Jun 23 2004)
Units: Feet
Control Station: 8516945 Kings Point, NY
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW6.85Mean Higher-High Water
MHW6.50Mean High Water
MTL3.38Mean Tide Level
MSL3.38Mean Sea Level
DTL3.42Mean Diurnal Tide Level
MLW0.26Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD883.52North American Vertical Datum of 1988
STND-1.62Station Datum
GT6.85Great Diurnal Range
MN6.24Mean Range of Tide
DHQ0.35Mean Diurnal High Water Inequality
DLQ0.27Mean Diurnal Low Water Inequality
HWI4.19Greenwich High Water Interval (in hours)
LWI10.93Greenwich Low Water Interval (in hours)
Max Tide9.13Highest Observed Tide
Max Tide Date & Time03/07/2001 13:42Highest Observed Tide Date & Time
Min Tide-2.98Lowest Observed Tide
Min Tide Date & Time12/13/2000 00:18Lowest Observed Tide Date & 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
08/01/2000 - 07/31/2001
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




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