Datums for 8775421, Naval Air Station TX


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8775421, Naval Air Station, TX
Status: Accepted (Apr 29 2004)
Units: Feet
Control Station: 8774770 Rockport, TX
T.M.: 90
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW0.62Mean Higher-High Water
MHW0.61Mean High Water
MTL0.31Mean Tide Level
MSL0.34Mean Sea Level
DTLMean Diurnal Tide Level
MLW0.02Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-4.51Station Datum
GTGreat Diurnal Range
MNMean Range of Tide
DHQMean Diurnal High Water Inequality
DLQMean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich 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
HAT1.19Highest Astronomical Tide
HAT Date & Time10/18/1989 08:24HAT Date and Time
LAT-0.65Lowest Astronomical Tide
LAT Date & Time01/18/1988 19:06LAT Date and Time
Tidal Datum Analysis Periods
03/01/1993 - 03/31/1993
05/01/1993 - 06/30/1996
08/01/1996 - 12/31/2001




Products available at 8775421 Naval Air Station, TX