Datums for 8720774, Palatka, St Johns River FL


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8720774, Palatka, St Johns River, FL
Status: Accepted (Oct 28 2011)
Units: Feet
Control Station: 8720503 Red Bay Point, St Johns River, FL
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW1.39Mean Higher-High Water
MHW1.36Mean High Water
MTL0.72Mean Tide Level
MSL0.72Mean Sea Level
DTL0.70Mean Diurnal Tide Level
MLW0.09Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD880.77North American Vertical Datum of 1988
STND0.77Station Datum
GT1.40Great Diurnal Range
MN1.27Mean Range of Tide
DHQ0.04Mean Diurnal High Water Inequality
DLQ0.09Mean Diurnal Low Water Inequality
HWI8.06Greenwich High Water Interval (in hours)
LWI2.56Greenwich Low Water Interval (in hours)
Max Tide4.09Highest Observed Tide
Max Tide Date & Time09/26/2004 20:48Highest Observed Tide Date & Time
Min Tide-1.26Lowest Observed Tide
Min Tide Date & Time05/29/2004 22:24Lowest Observed Tide Date & Time
HAT2.57Highest Astronomical Tide
HAT Date & Time10/09/1983 22:30HAT Date and Time
LAT-0.82Lowest Astronomical Tide
LAT Date & Time06/10/1995 23:54LAT Date and Time
Tidal Datum Analysis Periods
10/01/2003 - 09/30/2004
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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