Datums for 8720224, MAYPORT, ST JOHNS RIVER FL


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8720224, MAYPORT, ST JOHNS RIVER, FL
Status: Accepted (Apr 18 2005)
Units: Feet
Control Station: 8720220 Mayport (Ferry Depot), FL
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW4.96Mean Higher-High Water
MHW4.69Mean High Water
MTL2.42Mean Tide Level
MSL2.47Mean Sea Level
DTL2.48Mean Diurnal Tide Level
MLW0.15Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-1.73Station Datum
GT4.96Great Diurnal Range
MN4.54Mean Range of Tide
DHQ0.27Mean Diurnal High Water Inequality
DLQ0.15Mean Diurnal Low Water Inequality
HWI1.12Greenwich High Water Interval (in hours)
LWI7.00Greenwich 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
HAT6.38Highest Astronomical Tide
HAT Date & Time10/16/1989 14:18HAT Date and Time
LAT-1.47Lowest Astronomical Tide
LAT Date & Time02/09/2001 07:48LAT Date and Time
Tidal Datum Analysis Periods
04/01/1997 - 02/28/1998




Products available at 8720224 MAYPORT, ST JOHNS RIVER, FL