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Datums for 8728690, Apalachicola FL

Elevations on Station Datum

Station: 8728690, Apalachicola, FL
Status: Accepted (Oct 7 2011)
Units: Feet
T.M.: 75
Epoch: 1983-2001
Datum: STND
MHHW5.90Mean Higher-High Water
MHW5.80Mean High Water
MTL5.24Mean Tide Level
MSL5.20Mean Sea Level
DTL5.09Mean Diurnal Tide Level
MLW4.69Mean Low Water
MLLW4.29Mean Lower-Low Water
NAVD885.05North American Vertical Datum of 1988
STND0.00Station Datum
GT1.61Great Diurnal Range
MN1.11Mean Range of Tide
DHQ0.10Mean Diurnal High Water Inequality
DLQ0.40Mean Diurnal Low Water Inequality
HWI8.76Greenwich High Water Interval (in hours)
LWI2.81Greenwich Low Water Interval (in hours)
Max Tide12.33Highest Observed Tide
Max Tide Date & Time07/10/2005 18:42Highest Observed Tide Date & Time
Min Tide2.45Lowest Observed Tide
Min Tide Date & Time01/18/1981 15:42Lowest Observed Tide Date & Time
HAT6.37Highest Astronomical Tide
HAT Date & Time10/08/1990 09:18HAT Date and Time
LAT3.33Lowest Astronomical Tide
LAT Date & Time01/18/1988 15:00LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 12/31/2001
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.

Products available at 8728690 Apalachicola, FL

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