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Datums for 8761724, Grand Isle LA


Elevations on Station Datum

Station: 8761724, Grand Isle, LA
Status: Accepted (Apr 29 2014)
Units: Feet
T.M.: 90
Epoch: 2007-2011
Datum: STND
DatumValueDescription
MHHW7.13Mean Higher-High Water
MHW7.13Mean High Water
MTL6.60Mean Tide Level
MSL6.61Mean Sea Level
DTL6.60Mean Diurnal Tide Level
MLW6.08Mean Low Water
MLLW6.07Mean Lower-Low Water
NAVD88
STND0.00Station Datum
GT1.06Great Diurnal Range
MN1.04Mean Range of Tide
DHQ0.01Mean Diurnal High Water Inequality
DLQ0.01Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich Low Water Interval (in hours)
Maximum11.581Highest Observed Water Level
Max Date & Time08/29/2012 14:06Highest Observed Water Level Date and Time
Minimum2.999Lowest Observed Water Level
Min Date & Time01/13/1964 00:00Lowest Observed Water Level Date and Time
HAT7.874Highest Astronomical Tide
HAT Date & Time10/18/1989 04:54HAT Date and Time
LAT5.121Lowest Astronomical Tide
LAT Date & Time01/27/1987 12:18LAT Date and Time
Tidal Datum Analysis Periods
01/01/2007 - 08/31/2008
10/01/2008 - 10/31/2008
12/01/2008 - 08/31/2009
11/01/2009 - 12/31/2011




Products available at 8761724 Grand Isle, LA

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