Datums for 8651370, Duck NC


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8651370, Duck, NC
Status: Superseded (Apr 17 2003) (Accepted Apr 20 1998)
Units: Feet
Control Station: 8638610 Sewells Point, VA
T.M.: 0
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW3.75Mean Higher-High Water
MHW3.43Mean High Water
MTL1.79Mean Tide Level
MSL1.81Mean Sea Level
DTL1.88Mean Diurnal Tide Level
MLW0.15Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-18.21Station Datum
GT3.75Great Diurnal Range
MN3.28Mean Range of Tide
DHQ0.32Mean Diurnal High Water Inequality
DLQ0.15Mean Diurnal Low Water Inequality
HWI12.29Greenwich High Water Interval (in hours)
LWI6.10Greenwich Low Water Interval (in hours)
Max Tide8.19Highest Observed Tide
Max Tide Date & Time09/18/2003 16:06Highest Observed Tide Date & Time
Min Tide-2.29Lowest Observed Tide
Min Tide Date & Time03/16/1980 17:54Lowest Observed Tide Date & Time
HAT5.03Highest Astronomical Tide
HAT Date & Time10/09/2029 13:00HAT Date and Time
LAT-1.02Lowest Astronomical Tide
LAT Date & Time01/31/2014 06:06LAT Date and Time
Tidal Datum Analysis Periods
01/01/1979 - 12/31/1986




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