Datums for 8575512, Annapolis MD

NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8575512, Annapolis, MD
Status: Accepted (Oct 12 2011)
Units: Meters
Control Station:
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
MHHW0.438Mean Higher-High Water
MHW0.364Mean High Water
MTL0.215Mean Tide Level
MSL0.219Mean Sea Level
DTL0.219Mean Diurnal Tide Level
MLW0.067Mean Low Water
MLLW0.000Mean Lower-Low Water
NAVD880.235North American Vertical Datum of 1988
STND-1.377Station Datum
GT0.438Great Diurnal Range
MN0.297Mean Range of Tide
DHQ0.074Mean Diurnal High Water Inequality
DLQ0.067Mean Diurnal Low Water Inequality
HWI10.040Greenwich High Water Interval (in hours)
LWI3.970Greenwich Low Water Interval (in hours)
Max Tide2.183Highest Observed Tide
Max Tide Date & Time09/19/2003 11:54Highest Observed Tide Date & Time
Min Tide-1.194Lowest Observed Tide
Min Tide Date & Time12/31/1962 20:12Lowest Observed Tide Date & Time
HAT0.584Highest Astronomical Tide
HAT Date & Time07/13/2022 09:42HAT Date and Time
LAT-0.218Lowest Astronomical Tide
LAT Date & Time01/22/2023 16:06LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 12/31/2001

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