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Datums for 8575512, Annapolis MD


Elevations on Station Datum

Station: 8575512, Annapolis, MD
Status: Accepted (Oct 12 2011)
Units: Feet
T.M.: 75
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW5.95Mean Higher-High Water
MHW5.71Mean High Water
MTL5.22Mean Tide Level
MSL5.24Mean Sea Level
DTL5.24Mean Diurnal Tide Level
MLW4.74Mean Low Water
MLLW4.52Mean Lower-Low Water
NAVD885.29North American Vertical Datum of 1988
STND0.00Station Datum
GT1.44Great Diurnal Range
MN0.97Mean Range of Tide
DHQ0.24Mean Diurnal High Water Inequality
DLQ0.22Mean Diurnal Low Water Inequality
HWI10.04Greenwich High Water Interval (in hours)
LWI3.97Greenwich Low Water Interval (in hours)
Maximum11.68Highest Observed Water Level
Max Date & Time09/19/2003 11:54Highest Observed Water Level Date and Time
Minimum0.60Lowest Observed Water Level
Min Date & Time12/31/1962 20:12Lowest Observed Water Level Date and Time
HAT6.46Highest Astronomical Tide
HAT Date & Time06/22/1986 10:12HAT Date and Time
LAT3.90Lowest Astronomical Tide
LAT Date & Time01/21/2000 15:54LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 12/31/2001
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 8575512 Annapolis, MD

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services