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Status: Superseded (Apr 17 2003) (Accepted May 9 2001)
Units: Feet
Control Station: 8771510 Galveston Pleasure Pier, TX
T.M.: 90
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW2.01Mean Higher-High Water
MHW1.81Mean High Water
MTL1.13Mean Tide Level
MSL1.14Mean Sea Level
DTL1.00Mean Diurnal Tide Level
MLW0.46Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-8.94Station Datum
GT2.01Great Diurnal Range
MN1.34Mean Range of Tide
DHQ0.20Mean Diurnal High Water Inequality
DLQ0.47Mean 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
HAT3.05Highest Astronomical Tide
HAT Date & Time11/06/2025 23:06HAT Date and Time
LAT-1.46Lowest Astronomical Tide
LAT Date & Time01/21/2023 14:18LAT Date and Time
Tidal Datum Analysis Periods
10/01/2000 - 10/31/2000


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®