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Datums for 8770777, Manchester TX


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8770777, Manchester, TX
Status: Accepted (Oct 3 2017)
Units: Feet
Control Station: 8770613 Morgans Point, Barbours Cut, TX
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW1.62Mean Higher-High Water
MHW1.50Mean High Water
MTL0.87Mean Tide Level
MSL0.88Mean Sea Level
DTL0.81Mean Diurnal Tide Level
MLW0.24Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-5.52Station Datum
GT1.62Great Diurnal Range
MN1.26Mean Range of Tide
DHQ0.12Mean Diurnal High Water Inequality
DLQ0.24Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich Low Water Interval (in hours)
Max Tide12.07Highest Observed Tide
Max Tide Date & Time08/29/2017 09:36Highest Observed Tide Date & Time
Min Tide-3.24Lowest Observed Tide
Min Tide Date & Time03/09/1998 19:18Lowest Observed Tide Date & Time
HAT2.33Highest Astronomical Tide
HAT Date & Time05/06/1985 18:00HAT Date and Time
LAT-1.20Lowest Astronomical Tide
LAT Date & Time01/18/1988 20:36LAT Date and Time
Tidal Datum Analysis Periods
01/01/1998 - 12/31/2002
01/01/2016 - 12/31/2016




Products available at 8770777 Manchester, TX

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