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Datums for 8677344, St.Simons Island GA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8677344, St.Simons Island, GA
Status: Accepted (Sep 27 2011)
Units: Feet
Control Station: 8670870 Fort Pulaski, GA
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW7.20Mean Higher-High Water
MHW6.83Mean High Water
MTL3.52Mean Tide Level
MSL3.57Mean Sea Level
DTL3.60Mean Diurnal Tide Level
MLW0.21Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD884.23North American Vertical Datum of 1988
STND-1.70Station Datum
GT7.20Great Diurnal Range
MN6.62Mean Range of Tide
DHQ0.37Mean Diurnal High Water Inequality
DLQ0.21Mean Diurnal Low Water Inequality
HWI0.74Greenwich High Water Interval (in hours)
LWI7.16Greenwich Low Water Interval (in hours)
Max Tide9.62Highest Observed Tide
Max Tide Date & Time07/22/2001 02:12Highest Observed Tide Date & Time
Min Tide-3.27Lowest Observed Tide
Min Tide Date & Time03/08/2008 20:00Lowest Observed Tide Date & Time
HAT9.26Highest Astronomical Tide
HAT Date & Time10/16/1989 13:48HAT Date and Time
LAT-1.95Lowest Astronomical Tide
LAT Date & Time01/21/1992 08:12LAT Date and Time
Tidal Datum Analysis Periods
11/01/1999 - 10/31/2008
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 8677344 St.Simons Island, GA

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