Datums for 8770933, Clear Lake TX


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8770933, Clear Lake, TX
Status: Superseded (Apr 17 2003) (Accepted Jan 20 2000)
Units: Feet
Control Station: 8771450 Galveston Pier 21, TX
T.M.: 90
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW1.16Mean Higher-High Water
MHW1.08Mean High Water
MTL0.59Mean Tide Level
MSL0.64Mean Sea Level
DTL0.58Mean Diurnal Tide Level
MLW0.09Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-5.04Station Datum
GT1.16Great Diurnal Range
MN1.00Mean Range of Tide
DHQ0.07Mean Diurnal High Water Inequality
DLQ0.09Mean 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
HAT1.75Highest Astronomical Tide
HAT Date & Time10/11/2024 13:54HAT Date and Time
LAT-1.02Lowest Astronomical Tide
LAT Date & Time01/28/2006 21:00LAT Date and Time
Tidal Datum Analysis Periods
01/01/1994 - 12/31/1996




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