Datums for 8574070, Havre De Grace MD


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8574070, Havre De Grace, MD
Status: Superseded (Apr 17 2003) (Accepted Oct 14 1998)
Units: Feet
Control Station: 8574680 Baltimore, MD
T.M.: 75
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW2.44Mean Higher-High Water
MHW2.08Mean High Water
MTL1.17Mean Tide Level
MSL1.21Mean Sea Level
DTL1.22Mean Diurnal Tide Level
MLW0.25Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-6.08Station Datum
GT2.44Great Diurnal Range
MN1.83Mean Range of Tide
DHQ0.36Mean Diurnal High Water Inequality
DLQ0.25Mean Diurnal Low Water Inequality
HWI2.49Greenwich High Water Interval (in hours)
LWI9.25Greenwich Low Water Interval (in hours)
Max Tide7.08Highest Observed Tide
Max Tide Date & Time09/06/1979 07:30Highest Observed Tide Date & Time
Min Tide-3.90Lowest Observed Tide
Min Tide Date & Time12/25/1980 18:24Lowest Observed Tide Date & Time
HAT3.17Highest Astronomical Tide
HAT Date & Time05/18/2026 15:18HAT Date and Time
LAT-0.54Lowest Astronomical Tide
LAT Date & Time01/14/2032 10:12LAT Date and Time
Tidal Datum Analysis Periods
01/01/1979 - 12/31/1986




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