Datums for 8653795, Swanquarter NC


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8653795, Swanquarter, NC
Status: Accepted (Jan 10 2023)
Units: Feet
Control Station: 8654467 USCG Station Hatteras, NC
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW0.49Mean Higher-High Water
MHW0.43Mean High Water
MTL0.25Mean Tide Level
MSL0.27Mean Sea Level
DTL0.25Mean Diurnal Tide Level
MLW0.07Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD880.56North American Vertical Datum of 1988
STND-22.88Station Datum
GT0.49Great Diurnal Range
MN0.35Mean Range of Tide
DHQ0.06Mean Diurnal High Water Inequality
DLQ0.07Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich 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
HATHighest Astronomical Tide
HAT Date & Time HAT Date and Time
LATLowest Astronomical Tide
LAT Date & Time LAT Date and Time
Tidal Datum Analysis Periods
12/01/2021 - 12/31/2021
02/01/2022 - 03/31/2022




Products available at 8653795 Swanquarter, NC