Datums for 8657813, Hampstead


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8657813, Hampstead
Status: Accepted (Nov 17 2022)
Units: Feet
Control Station: 8656483 Beaufort, Duke Marine Lab, NC
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW3.81Mean Higher-High Water
MHW3.48Mean High Water
MTL1.82Mean Tide Level
MSL1.86Mean Sea Level
DTL1.90Mean Diurnal Tide Level
MLW0.16Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD882.37North American Vertical Datum of 1988
STND-26.49Station Datum
GT3.81Great Diurnal Range
MN3.32Mean Range of Tide
DHQ0.32Mean Diurnal High Water Inequality
DLQ0.16Mean Diurnal Low Water Inequality
HWI0.93Greenwich High Water Interval (in hours)
LWI7.34Greenwich 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
HAT5.04Highest Astronomical Tide
HAT Date & Time10/28/2011 14:00HAT Date and Time
LAT-1.20Lowest Astronomical Tide
LAT Date & Time02/01/2014 08:18LAT Date and Time
Tidal Datum Analysis Periods
01/01/2022 - 05/31/2022




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