Datums for 8771416, Galveston Bay Entrance, South Jetty TX

NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8771416, Galveston Bay Entrance, South Jetty, TX
Status: Accepted (Apr 30 2003)
Units: Feet
Control Station: 8771510 Galveston Pleasure Pier, TX
T.M.: 90
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW2.14Mean Higher-High Water
MHW1.94Mean High Water
MTL1.18Mean Tide Level
MSL1.17Mean Sea Level
DTL1.07Mean Diurnal Tide Level
MLW0.41Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-7.53Station Datum
GT2.14Great Diurnal Range
MN1.53Mean Range of Tide
DHQ0.20Mean Diurnal High Water Inequality
DLQ0.41Mean 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
HAT3.08Highest Astronomical Tide
HAT Date & Time11/06/2025 23:06HAT Date and Time
LAT-1.43Lowest Astronomical Tide
LAT Date & Time01/21/2023 14:18LAT Date and Time
Tidal Datum Analysis Periods
05/01/1997 - 04/30/1998


Products available at 8771416 Galveston Bay Entrance, South Jetty, TX
  • Meteorological/Other
  • Meteorological Observations
  • Water Temp/Conductivity
  • PORTS®
  • This station is not a member of PORTS®