Datums for 8631044, Wachapreague VA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8631044, Wachapreague, VA
Status: Accepted (Nov 20 2020)
Units: Feet
Control Station: 8638610 Sewells Point, VA
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW4.48Mean Higher-High Water
MHW4.15Mean High Water
MTL2.16Mean Tide Level
MSL2.26Mean Sea Level
DTL2.24Mean Diurnal Tide Level
MLW0.17Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD882.61North American Vertical Datum of 1988
STND-2.32Station Datum
GT4.47Great Diurnal Range
MN3.99Mean Range of Tide
DHQ0.32Mean Diurnal High Water Inequality
DLQ0.16Mean Diurnal Low Water Inequality
HWI1.02Greenwich High Water Interval (in hours)
LWI7.10Greenwich Low Water Interval (in hours)
Max Tide8.92Highest Observed Tide
Max Tide Date & Time02/05/1998 08:06Highest Observed Tide Date & Time
Min Tide-2.83Lowest Observed Tide
Min Tide Date & Time03/16/1980 01:06Lowest Observed Tide Date & Time
HAT5.54Highest Astronomical Tide
HAT Date & Time10/09/2029 14:18HAT Date and Time
LAT-1.07Lowest Astronomical Tide
LAT Date & Time02/01/2014 08:06LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 12/31/1998
04/01/2002 - 03/31/2003
05/01/2008 - 04/30/2009
01/01/2012 - 12/31/2015
08/01/2016 - 07/31/2018




Products available at 8631044 Wachapreague, VA