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Datums for 8724139, HORESHOE KEYS FL


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8724139, HORESHOE KEYS, FL
Status: Accepted (Feb 3 2004)
Units: Feet
Control Station: 8724580 Key West, FL
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW1.52Mean Higher-High Water
MHW1.31Mean High Water
MTL0.78Mean Tide Level
MSL0.71Mean Sea Level
DTL0.76Mean Diurnal Tide Level
MLW0.25Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-1.14Station Datum
GT1.52Great Diurnal Range
MN1.06Mean Range of Tide
DHQ0.21Mean Diurnal High Water Inequality
DLQ0.24Mean Diurnal Low Water Inequality
HWI6.67Greenwich High Water Interval (in hours)
LWI11.55Greenwich 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
06/01/1974 - 06/30/1974
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 8724139 HORESHOE KEYS, FL

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