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 8771074, Fieldwood WC-289 Platform

NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8771074, Fieldwood WC-289 Platform
Status: Accepted (Apr 1 2021)
Units: Feet
Control Station: 8770822 Texas Point, Sabine Pass, TX
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW2.21Mean Higher-High Water
MHW2.01Mean High Water
MTL1.25Mean Tide Level
MSL1.22Mean Sea Level
DTL1.10Mean Diurnal Tide Level
MLW0.50Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD880.91North American Vertical Datum of 1988
STND38.79Station Datum
GT2.22Great Diurnal Range
MN1.52Mean Range of Tide
DHQ0.20Mean Diurnal High Water Inequality
DLQ0.50Mean 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
HAT2.79Highest Astronomical Tide
HAT Date & Time10/27/2007 23:12HAT Date and Time
LAT-1.48Lowest Astronomical Tide
LAT Date & Time01/10/2005 14:24LAT Date and Time
Tidal Datum Analysis Periods
09/01/2020 - 12/31/2020


Products available at 8771074 Fieldwood WC-289 Platform,
  • Meteorological/Other
  • Meteorological Observations
  • Water Temp/Conductivity
  • PORTS®
  • This station is not a member of PORTS®