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Datums for 8725019, KEEWAYDIN ISLAND, INSIDE FL


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8725019, KEEWAYDIN ISLAND, INSIDE, FL
Status: Accepted (Aug 1 2003)
Units: Feet
Control Station: 8725110 Naples, Gulf of Mexico, FL
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW2.61Mean Higher-High Water
MHW2.36Mean High Water
MTL1.42Mean Tide Level
MSL1.45Mean Sea Level
DTL1.30Mean Diurnal Tide Level
MLW0.47Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD882.00North American Vertical Datum of 1988
STND-0.63Station Datum
GT2.61Great Diurnal Range
MN1.90Mean Range of Tide
DHQ0.24Mean Diurnal High Water Inequality
DLQ0.47Mean Diurnal Low Water Inequality
HWI6.08Greenwich High Water Interval (in hours)
LWI12.20Greenwich 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
HAT3.45Highest Astronomical Tide
HAT Date & Time11/05/1990 06:36HAT Date and Time
LAT-0.94Lowest Astronomical Tide
LAT Date & Time01/10/2001 12:48LAT Date and Time
Tidal Datum Analysis Periods
05/01/1978 - 07/31/1978
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 8725019 KEEWAYDIN ISLAND, INSIDE, FL

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