Datums for 8773808, Barroom Bay


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8773808, Barroom Bay
Status: Accepted (Apr 15 2021)
Units: Feet
Control Station: 8774770 Rockport, TX
T.M.: 0
Epoch: 2002-2006
Datum: MLLW
DatumValueDescription
MHHW0.41Mean Higher-High Water
MHW0.40Mean High Water
MTL0.20Mean Tide Level
MSL0.22Mean Sea Level
DTL0.20Mean Diurnal Tide Level
MLW0.01Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88-0.53North American Vertical Datum of 1988
STND-30.96Station Datum
GT0.41Great Diurnal Range
MN0.39Mean Range of Tide
DHQ0.01Mean Diurnal High Water Inequality
DLQ0.01Mean 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
HAT0.50Highest Astronomical Tide
HAT Date & Time10/11/2025 09:48HAT Date and Time
LAT-0.10Lowest Astronomical Tide
LAT Date & Time12/05/2025 18:30LAT Date and Time
Tidal Datum Analysis Periods
01/01/2020 - 05/31/2020




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