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Current Datum Value: 3.04

Datums for 8724153, JOHNSON KEYS SOUTH FL


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8724153, JOHNSON KEYS SOUTH, FL
Status: Accepted (Nov 20 2003)
Units: Feet
Control Station: 8724211 BIG PINE KEY VIADUCT, FL
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW1.30Mean Higher-High Water
MHW1.08Mean High Water
MTL0.65Mean Tide Level
MSL0.67Mean Sea Level
DTL0.65Mean Diurnal Tide Level
MLW0.23Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-3.04Station Datum
GT1.31Great Diurnal Range
MN0.86Mean Range of Tide
DHQ0.22Mean Diurnal High Water Inequality
DLQ0.23Mean Diurnal Low Water Inequality
HWI6.37Greenwich High Water Interval (in hours)
LWI10.95Greenwich 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
08/01/1974 - 08/31/1974




Products available at 8724153 JOHNSON KEYS SOUTH, FL

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