NOAA Web Site Link Tides and Currents Home Page Transparent placeholder image

On Saturday, June 23rd, 2018 starting at 7:30 a.m to 8 p.m. EDT, there will be a system maintenance performed affecting the Tides and Currents web site (https://tidesandcurrents.noaa.gov). During this time, the Tides and Currents website will be running with limited capabilities. Click here for more information.

Datums for 8761305, Shell Beach LA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8761305, Shell Beach, LA
Status: Accepted (Feb 27 2018)
Units: Feet
Control Station: 8747437 Bay Waveland Yacht Club, MS
T.M.: 90
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW1.47Mean Higher-High Water
MHW1.40Mean High Water
MTL0.74Mean Tide Level
MSL0.75Mean Sea Level
DTL0.73Mean Diurnal Tide Level
MLW0.08Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD880.72North American Vertical Datum of 1988
STND-31.35Station Datum
GT1.47Great Diurnal Range
MN1.31Mean Range of Tide
DHQ0.07Mean Diurnal High Water Inequality
DLQ0.08Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich Low Water Interval (in hours)
Max Tide-20.51Highest Observed Tide
Max Tide Date & Time08/29/2012 05:24Highest Observed Tide Date & Time
Min Tide-34.06Lowest Observed Tide
Min Tide Date & Time08/25/2008 02:48Lowest Observed Tide Date & Time
HAT2.34Highest Astronomical Tide
HAT Date & Time10/18/1989 09:06HAT Date and Time
LAT-0.97Lowest Astronomical Tide
LAT Date & Time01/28/1987 18:00LAT Date and Time
Tidal Datum Analysis Periods
07/01/2009 - 06/30/2011
01/01/2012 - 12/31/2012
01/01/2014 - 12/31/2015
06/01/2016 - 05/31/2017




Products available at 8761305 Shell Beach, LA

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