Datums for 8761431, Rat Bayou LA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8761431, Rat Bayou, LA
Status: Accepted (Aug 28 2024)
Units: Feet
Control Station: 8761724 Grand Isle, LA
T.M.: 90
Epoch: 2012-2016
Datum: MLLW
DatumValueDescription
MHHW0.53Mean Higher-High Water
MHW0.53Mean High Water
MTL0.27Mean Tide Level
MSL0.24Mean Sea Level
DTL0.27Mean Diurnal Tide Level
MLW0.00Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88-0.90North American Vertical Datum of 1988
STND-30.86Station Datum
GT0.53Great Diurnal Range
MN0.53Mean Range of Tide
DHQ0.00Mean Diurnal High Water Inequality
DLQ0.00Mean 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
HAT1.07Highest Astronomical Tide
HAT Date & Time10/11/2025 09:54HAT Date and Time
LAT-0.70Lowest Astronomical Tide
LAT Date & Time01/20/2023 17:36LAT Date and Time
Tidal Datum Analysis Periods
02/01/2024 - 04/30/2024




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