Datums for 8574683, Fort McHenry Marsh MD


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8574683, Fort McHenry Marsh, MD
Status: Accepted (Apr 25 2005)
Units: Feet
Control Station: 8574680 Baltimore, Fort McHenry, Patapsco River, MD
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW1.66Mean Higher-High Water
MHW1.36Mean High Water
MTL0.79Mean Tide Level
MSL0.80Mean Sea Level
DTL0.83Mean Diurnal Tide Level
MLW0.22Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-4.12Station Datum
GT1.66Great Diurnal Range
MN1.13Mean Range of Tide
DHQ0.30Mean Diurnal High Water Inequality
DLQ0.22Mean Diurnal Low Water Inequality
HWI11.52Greenwich High Water Interval (in hours)
LWI5.68Greenwich 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
05/01/2004 - 01/31/2005




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