Datums for 8735180, Dauphin Island AL


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8735180, Dauphin Island, AL
Status: Superseded (Apr 17 2003) (Accepted May 8 1998)
Units: Feet
Control Station: 8729840 Pensacola, FL
T.M.: 0
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW1.22Mean Higher-High Water
MHW1.21Mean High Water
MTL0.62Mean Tide Level
MSL0.57Mean Sea Level
DTL0.61Mean Diurnal Tide Level
MLW0.04Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-2.68Station Datum
GT1.22Great Diurnal Range
MN1.17Mean Range of Tide
DHQ0.01Mean Diurnal High Water Inequality
DLQ0.04Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich Low Water Interval (in hours)
Max Tide7.34Highest Observed Tide
Max Tide Date & Time09/16/2004 04:06Highest Observed Tide Date & Time
Min Tide-1.88Lowest Observed Tide
Min Tide Date & Time01/19/1977 06:00Lowest Observed Tide Date & Time
HAT2.06Highest Astronomical Tide
HAT Date & Time10/29/2007 05:12HAT Date and Time
LAT-1.04Lowest Astronomical Tide
LAT Date & Time01/21/2023 15:18LAT Date and Time
Tidal Datum Analysis Periods
01/01/1967 - 12/31/1968
01/01/1971 - 12/31/1974
01/01/1976 - 12/31/1980
01/01/1982 - 12/31/1987




Products available at 8735180 Dauphin Island, AL