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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 +/- 4.0 - 13.0 cm (1.6 - 5.1 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 8760922, Pilots Station East, SW Pass LA


NOTICE OF PROVISIONAL DATUM These datums and any data referred to said datum are PROVISIONAL and subject to revision until they have been thoroughly reviewed and received final approval. Subsequent review based on field inspections and additional measurements may result in revisions to the data and datums. Data users are cautioned to consider the conditional nature of this information before using it for critical decisions such as those that concern physical or public safety. Only after meeting all standards for quality control assurance will the datums be classified as Accepted Datums.

Elevations on Station Datum

Station: 8760922, Pilots Station East, SW Pass, LA
Status: Accepted (Jul 15 2014)
Units: Feet
T.M.: 0
Epoch: 2007-2011
Datum: STND
DatumValueDescription
MHHW31.57Mean Higher-High Water
MHW31.56Mean High Water
MTL30.97Mean Tide Level
MSL30.98Mean Sea Level
DTL30.97Mean Diurnal Tide Level
MLW30.40Mean Low Water
MLLW30.38Mean Lower-Low Water
NAVD88
STND0.00Station Datum
GT1.19Great Diurnal Range
MN1.16Mean Range of Tide
DHQ0.01Mean Diurnal High Water Inequality
DLQ0.02Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich Low Water Interval (in hours)
Maximum37.55Highest Observed Water Level
Max Date & Time08/29/2005 09:30Highest Observed Water Level Date and Time
Minimum28.66Lowest Observed Water Level
Min Date & Time12/13/2004 14:00Lowest Observed Water Level Date and Time
HAT32.37Highest Astronomical Tide
HAT Date & Time10/18/1989 03:18HAT Date and Time
LAT29.36Lowest Astronomical Tide
LAT Date & Time01/27/1987 11:06LAT Date and Time
Tidal Datum Analysis Periods
09/01/2004 - 08/31/2008
04/01/2010 - 03/31/2012
11/01/2012 - 10/31/2013




Products available at 8760922 Pilots Station East, SW Pass, LA

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services