Datums for 8774770, Rockport TX


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8774770, Rockport, TX
Status: Accepted (May 2 2011)
Units: Feet
Control Station:
T.M.: 0
Epoch: 2002-2006
Datum: MLLW
DatumValueDescription
MHHW0.37Mean Higher-High Water
MHW0.36Mean High Water
MTL0.18Mean Tide Level
MSL0.19Mean Sea Level
DTL0.18Mean Diurnal Tide Level
MLW0.01Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88-0.93North American Vertical Datum of 1988
STND-6.45Station Datum
GT0.36Great Diurnal Range
MN0.36Mean 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 Tide4.10Highest Observed Tide
Max Tide Date & Time08/10/1980 13:18Highest Observed Tide Date & Time
Min Tide-2.62Lowest Observed Tide
Min Tide Date & Time02/29/1984 11:18Lowest Observed Tide Date & Time
HAT0.86Highest Astronomical Tide
HAT Date & Time10/18/1989 09:54HAT Date and Time
LAT-0.54Lowest Astronomical Tide
LAT Date & Time01/28/1987 18:06LAT Date and Time
Tidal Datum Analysis Periods
01/01/2002 - 12/31/2006




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