Datums for 8771486, Galveston Railroad Bridge TX


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8771486, Galveston Railroad Bridge, TX
Status: Accepted (Oct 4 2017)
Units: Feet
Control Station: 8771450 Galveston Pier 21, TX
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW1.26Mean Higher-High Water
MHW1.16Mean High Water
MTL0.68Mean Tide Level
MSL0.74Mean Sea Level
DTL0.63Mean Diurnal Tide Level
MLW0.20Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD880.29North American Vertical Datum of 1988
STND-19.54Station Datum
GT1.25Great Diurnal Range
MN0.97Mean Range of Tide
DHQ0.09Mean Diurnal High Water Inequality
DLQ0.19Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich Low Water Interval (in hours)
Max Tide4.00Highest Observed Tide
Max Tide Date & Time10/25/2018 02:42Highest Observed Tide Date & Time
Min Tide-2.78Lowest Observed Tide
Min Tide Date & Time12/21/2018 15:18Lowest Observed Tide Date & Time
HAT1.62Highest Astronomical Tide
HAT Date & Time06/22/1986 13:30HAT Date and Time
LAT-0.79Lowest Astronomical Tide
LAT Date & Time12/31/1986 16:24LAT Date and Time
Tidal Datum Analysis Periods
10/01/2013 - 09/30/2014




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