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
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
HAT0.88Highest Astronomical Tide
HAT Date & Time10/19/2004 11:36HAT Date and Time
LAT-0.63Lowest Astronomical Tide
LAT Date & Time01/21/2023 18:42LAT Date and Time
Tidal Datum Analysis Periods
01/01/2002 - 12/31/2006

Products available at 8774770 Rockport, TX