Datums for 8573927, Chesapeake City MD


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8573927, Chesapeake City, MD
Status: Accepted (May 8 2020)
Units: Feet
Control Station: 8551910 Reedy Point, DE
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW3.23Mean Higher-High Water
MHW3.02Mean High Water
MTL1.62Mean Tide Level
MSL1.56Mean Sea Level
DTL1.61Mean Diurnal Tide Level
MLW0.22Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD881.60North American Vertical Datum of 1988
STND-3.15Station Datum
GT3.22Great Diurnal Range
MN2.81Mean Range of Tide
DHQ0.20Mean Diurnal High Water Inequality
DLQ0.21Mean Diurnal Low Water Inequality
HWI3.04Greenwich High Water Interval (in hours)
LWI9.53Greenwich Low Water Interval (in hours)
Max Tide8.66Highest Observed Tide
Max Tide Date & Time09/19/2003 13:18Highest Observed Tide Date & Time
Min Tide-3.73Lowest Observed Tide
Min Tide Date & Time04/05/1975 06:18Lowest Observed Tide Date & Time
HAT3.86Highest Astronomical Tide
HAT Date & Time09/19/1997 04:48HAT Date and Time
LAT-0.82Lowest Astronomical Tide
LAT Date & Time01/21/1996 10:30LAT Date and Time
Tidal Datum Analysis Periods
05/01/1981 - 04/30/1983
04/01/2004 - 03/31/2012
01/01/2013 - 12/31/2017




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