NOAA Web Site Link Tides and Currents Home Page Transparent placeholder image

Notice: We are experiencing a wide spread communication outage affecting the availability of water level and meteorological data for some of our stations, as well as several critical bridge clearance measurements. We are diligently working to resolve this data outage. Please direct all questions to tide.predictions@noaa.gov or call (301) 713-2815.

Datums for 8724503, STOCK ISLAND FL


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8724503, STOCK ISLAND, FL
Status: Accepted (Jul 31 2003)
Units: Feet
Control Station: 8724580 Key West, FL
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW1.12Mean Higher-High Water
MHW0.85Mean High Water
MTL0.50Mean Tide Level
MSL0.48Mean Sea Level
DTL0.56Mean Diurnal Tide Level
MLW0.15Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD881.29North American Vertical Datum of 1988
STND-3.37Station Datum
GT1.13Great Diurnal Range
MN0.70Mean Range of Tide
DHQ0.28Mean Diurnal High Water Inequality
DLQ0.15Mean Diurnal Low Water Inequality
HWI4.14Greenwich High Water Interval (in hours)
LWI9.88Greenwich Low Water Interval (in hours)
Max TideHighest Observed Tide
Max Tide Date & Time Highest Observed Tide Date & Time
Min TideLowest Observed Tide
Min Tide Date & Time Lowest Observed Tide Date & Time
HATHighest Astronomical Tide
HAT Date & Time HAT Date and Time
LATLowest Astronomical Tide
LAT Date & Time LAT Date and Time
Tidal Datum Analysis Periods
04/01/1974 - 04/30/1974
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 8724503 STOCK ISLAND, FL

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