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Datums for 8720623, ANASTASIA ISLAND FL


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8720623, ANASTASIA ISLAND, FL
Status: Accepted (Mar 25 2004)
Units: Feet
Control Station: 8720220 Mayport (Ferry Depot), FL
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW5.03Mean Higher-High Water
MHW4.71Mean High Water
MTL2.44Mean Tide Level
MSL2.51Mean Sea Level
DTL2.52Mean Diurnal Tide Level
MLW0.18Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD882.87North American Vertical Datum of 1988
STND-1.92Station Datum
GT5.03Great Diurnal Range
MN4.54Mean Range of Tide
DHQ0.32Mean Diurnal High Water Inequality
DLQ0.17Mean Diurnal Low Water Inequality
HWI1.88Greenwich High Water Interval (in hours)
LWI8.07Greenwich 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
HATHighest Astronomical Tide
HAT Date & Time HAT Date and Time
LATLowest Astronomical Tide
LAT Date & Time LAT Date and Time
Tidal Datum Analysis Periods
10/01/1978 - 10/31/1978
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 8720623 ANASTASIA ISLAND, FL

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