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Datums for 8724172, JOHNSON KEYS NORTH FL


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8724172, JOHNSON KEYS NORTH, FL
Status: Accepted (Jan 6 2004)
Units: Feet
Control Station: 8724580 Key West, FL
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW2.20Mean Higher-High Water
MHW1.99Mean High Water
MTL1.16Mean Tide Level
MSL1.08Mean Sea Level
DTL1.10Mean Diurnal Tide Level
MLW0.33Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-2.25Station Datum
GT2.20Great Diurnal Range
MN1.66Mean Range of Tide
DHQ0.21Mean Diurnal High Water Inequality
DLQ0.32Mean Diurnal Low Water Inequality
HWI6.34Greenwich High Water Interval (in hours)
LWI0.34Greenwich 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 8724172 JOHNSON KEYS NORTH, FL

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