Datums for 8779749, SPI Brazos Santiago TX


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8779749, SPI Brazos Santiago, TX
Status: Accepted (May 21 2021)
Units: Feet
Control Station: 8779770 Port Isabel, TX
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW1.47Mean Higher-High Water
MHW1.41Mean High Water
MTL0.79Mean Tide Level
MSL0.87Mean Sea Level
DTL0.74Mean Diurnal Tide Level
MLW0.17Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD881.23North American Vertical Datum of 1988
STND-24.24Station Datum
GT1.47Great Diurnal Range
MN1.24Mean Range of Tide
DHQ0.07Mean Diurnal High Water Inequality
DLQ0.17Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich Low Water Interval (in hours)
Max Tide3.95Highest Observed Tide
Max Tide Date & Time09/22/2020 03:48Highest Observed Tide Date & Time
Min Tide-1.09Lowest Observed Tide
Min Tide Date & Time01/03/2022 19:36Lowest Observed Tide Date & Time
HAT2.33Highest Astronomical Tide
HAT Date & Time10/29/2007 02:30HAT Date and Time
LAT-1.15Lowest Astronomical Tide
LAT Date & Time01/10/2005 14:18LAT Date and Time
Tidal Datum Analysis Periods
01/01/2017 - 12/31/2020




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