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Datums for 8776139, S. Bird Island TX


NOTICE: All data values are relative to the STND.

Elevations on Standard Datum

Station: 8776139, S. Bird Island, TX
Status: Accepted (May 9 2018)
Units: Feet
Control Station: 8774770 Rockport, TX
T.M.: 0
Epoch: 2002-2006
Datum: STND
DatumValueDescription
MHHWMean Higher-High Water
MHWMean High Water
MTLMean Tide Level
MSL1.97Mean Sea Level
DTLMean Diurnal Tide Level
MLWMean Low Water
MLLWMean Lower-Low Water
NAVD881.49North American Vertical Datum of 1988
STND0.00Station Datum
GTGreat Diurnal Range
MNMean Range of Tide
DHQMean Diurnal High Water Inequality
DLQMean 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
HATHighest Astronomical Tide
HAT Date & Time HAT Date and Time
LATLowest Astronomical Tide
LAT Date & Time LAT Date and Time
Tidal Datum Analysis Periods
08/01/2016 - 11/30/2016
01/01/2017 - 07/31/2017




Products available at 8776139 S. Bird Island, TX

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