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Datums for 8723927, DUCK KEY FL


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8723927, DUCK KEY, FL
Status: Accepted (Apr 17 2003)
Units: Feet
Control Station: 8724580 Key West, FL
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW1.66Mean Higher-High Water
MHW1.47Mean High Water
MTL0.80Mean Tide Level
MSL0.81Mean Sea Level
DTL0.83Mean Diurnal Tide Level
MLW0.13Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD881.71North American Vertical Datum of 1988
STND-2.25Station Datum
GT1.66Great Diurnal Range
MN1.34Mean Range of Tide
DHQ0.19Mean Diurnal High Water Inequality
DLQ0.13Mean Diurnal Low Water Inequality
HWI1.58Greenwich High Water Interval (in hours)
LWI7.73Greenwich Low Water Interval (in hours)
Max Tide0.30Highest Observed Tide
Max Tide Date & Time11/02/1971 20:00Highest Observed Tide Date & Time
Min Tide-3.27Lowest Observed Tide
Min Tide Date & Time02/10/1971 14:48Lowest 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
01/01/1971 - 12/31/1971
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 8723927 DUCK KEY, FL

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services