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Datums for 8770808, High Island TX


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8770808, High Island, TX
Status: Accepted (Sep 29 2017)
Units: Feet
Control Station: 8770971 Rollover Pass, TX
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW1.41Mean Higher-High Water
MHW1.32Mean High Water
MTL0.77Mean Tide Level
MSL0.78Mean Sea Level
DTL0.70Mean Diurnal Tide Level
MLW0.22Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-13.32Station Datum
GT1.41Great Diurnal Range
MN1.10Mean Range of Tide
DHQ0.09Mean Diurnal High Water Inequality
DLQ0.22Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich Low Water Interval (in hours)
Max Tide5.52Highest Observed Tide
Max Tide Date & Time08/30/2017 14:42Highest Observed Tide Date & Time
Min Tide-1.49Lowest Observed Tide
Min Tide Date & Time02/25/2016 08:24Lowest Observed Tide Date & Time
HAT1.72Highest Astronomical Tide
HAT Date & Time12/04/1986 07:48HAT Date and Time
LAT-0.57Lowest Astronomical Tide
LAT Date & Time12/31/1986 19:48LAT Date and Time
Tidal Datum Analysis Periods
02/01/2016 - 11/30/2016




Products available at 8770808 High Island, TX

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services