Datums for 8771341, Galveston Bay Entrance TX

NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8771341, Galveston Bay Entrance, TX
Status: Accepted (Mar 23 2020)
Units: Feet
Control Station: 8771450 Galveston Pier 21, TX
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
MHHW1.67Mean Higher-High Water
MHW1.55Mean High Water
MTL0.97Mean Tide Level
MSL0.97Mean Sea Level
DTL0.83Mean Diurnal Tide Level
MLW0.39Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD880.56North American Vertical Datum of 1988
STND-9.09Station Datum
GT1.67Great Diurnal Range
MN1.17Mean Range of Tide
DHQ0.12Mean Diurnal High Water Inequality
DLQ0.39Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich Low Water Interval (in hours)
Max Tide5.77Highest Observed Tide
Max Tide Date & Time07/15/2003 11:54Highest Observed Tide Date & Time
Min Tide-2.74Lowest Observed Tide
Min Tide Date & Time12/23/2007 13:30Lowest Observed Tide Date & Time
HAT2.46Highest Astronomical Tide
HAT Date & Time10/17/1989 00:06HAT Date and Time
LAT-1.22Lowest Astronomical Tide
LAT Date & Time12/31/1986 15:30LAT Date and Time
Tidal Datum Analysis Periods
05/01/2011 - 04/30/2013
04/01/2014 - 03/31/2019

Products available at 8771341 Galveston Bay Entrance, TX