NOTICE: Data for determining a datum at this station was collected using non-standard methodologies and may not meet CO-OPS highest level of accuracy of 2 cm (0.8 in). The estimated error associated with the average six-minute water level observations relative to datum is expected to be within +/- 8 cm (3 in) at 95% confidence. Recognizing that these data can be used for certain applications CO-OPS is making these data available to its users with restraint. Users are cautioned to consider the accuracy of these data before using them for critical navigational or coastal engineering purposes.

Datums for 8770752, COX WC-53 Platform

NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8770752, COX WC-53 Platform
Status: Accepted (Mar 29 2021)
Units: Feet
Control Station: 8770822 Texas Point, Sabine Pass, TX
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW2.41Mean Higher-High Water
MHW2.16Mean High Water
MTL1.37Mean Tide Level
MSL1.33Mean Sea Level
DTL1.21Mean Diurnal Tide Level
MLW0.58Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD881.51North American Vertical Datum of 1988
STND56.86Station Datum
GT2.41Great Diurnal Range
MN1.59Mean Range of Tide
DHQ0.25Mean Diurnal High Water Inequality
DLQ0.58Mean 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
HAT2.99Highest Astronomical Tide
HAT Date & Time10/27/2007 23:12HAT Date and Time
LAT-1.49Lowest Astronomical Tide
LAT Date & Time01/10/2005 14:36LAT Date and Time
Tidal Datum Analysis Periods
09/01/2020 - 12/31/2020


Products available at 8770752 COX WC-53 Platform,
  • Meteorological/Other
  • Meteorological Observations
  • Water Temp/Conductivity
  • PORTS®
  • This station is not a member of PORTS®