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Datums for 8735180, Dauphin Island AL


Elevations on Station Datum

Station: 8735180, Dauphin Island, AL
Status: Accepted (Jul 19 2013)
Units: Feet
T.M.: 0
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW4.08Mean Higher-High Water
MHW4.06Mean High Water
MTL3.47Mean Tide Level
MSL3.44Mean Sea Level
DTL3.48Mean Diurnal Tide Level
MLW2.89Mean Low Water
MLLW2.88Mean Lower-Low Water
NAVD883.38North American Vertical Datum of 1988
STND0.00Station Datum
GT1.20Great Diurnal Range
MN1.17Mean Range of Tide
DHQ0.02Mean Diurnal High Water Inequality
DLQ0.01Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich Low Water Interval (in hours)
Maximum10.02Highest Observed Water Level
Max Date & Time09/16/2004 04:06Highest Observed Water Level Date and Time
Minimum0.80Lowest Observed Water Level
Min Date & Time01/19/1977 06:00Lowest Observed Water Level Date and Time
HAT4.91Highest Astronomical Tide
HAT Date & Time10/18/1989 05:24HAT Date and Time
LAT1.83Lowest Astronomical Tide
LAT Date & Time01/18/1988 14:54LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 12/31/1997




Products available at 8735180 Dauphin Island, AL

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