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Datums for 8735181, Dauphin Island Hydro AL


Elevations on Station Datum

Station: 8735181, Dauphin Island Hydro, AL
Status: Accepted (Feb 16 2006)
Units: Feet
T.M.: 90
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW4.12Mean Higher-High Water
MHW4.10Mean High Water
MTL3.50Mean Tide Level
MSL3.47Mean Sea Level
DTL3.50Mean Diurnal Tide Level
MLW2.89Mean Low Water
MLLW2.88Mean Lower-Low Water
NAVD88
STND0.00Station Datum
GT1.24Great Diurnal Range
MN1.21Mean 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)
MaximumHighest Observed Water Level
Max Date & Time Highest Observed Water Level Date and Time
MinimumLowest Observed Water Level
Min Date & Time Lowest Observed Water Level Date and Time
HAT4.94Highest Astronomical Tide
HAT Date & Time10/18/1989 05:30HAT Date and Time
LAT1.87Lowest Astronomical Tide
LAT Date & Time01/18/1988 14:54LAT Date and Time
Tidal Datum Analysis Periods
06/01/2005 - 11/30/2005
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 8735181 Dauphin Island Hydro, AL

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