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
| Datum | Value | Description |
| MHHW | 7.20 | Mean Higher-High Water |
| MHW | 6.83 | Mean High Water |
| MTL | 3.52 | Mean Tide Level |
| MSL | 3.57 | Mean Sea Level |
| DTL | 3.60 | Mean Diurnal Tide Level |
| MLW | 0.21 | Mean Low Water |
| MLLW | 0.00 | Mean Lower-Low Water |
| NAVD88 | 4.23 | North American Vertical Datum of 1988 |
| STND | -1.70 | Station Datum |
| GT | 7.20 | Great Diurnal Range |
| MN | 6.62 | Mean Range of Tide |
| DHQ | 0.37 | Mean Diurnal High Water Inequality |
| DLQ | 0.21 | Mean Diurnal Low Water Inequality |
| HWI | 0.74 | Greenwich High Water Interval (in hours) |
| LWI | 7.16 | Greenwich Low Water Interval (in hours) |
| Max Tide | 9.62 | Highest Observed Tide |
| Max Tide Date & Time | 07/22/2001 02:12 | Highest Observed Tide Date & Time |
| Min Tide | -3.27 | Lowest Observed Tide |
| Min Tide Date & Time | 03/08/2008 20:00 | Lowest Observed Tide Date & Time |
| HAT | 9.26 | Highest Astronomical Tide |
| HAT Date & Time | 10/16/1989 13:48 | HAT Date and Time |
| LAT | -1.95 | Lowest Astronomical Tide |
| LAT Date & Time | 01/21/1992 08:12 | LAT 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.
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