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Datums for 8638863, Chesapeake Bay Bridge Tunnel VA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8638863, Chesapeake Bay Bridge Tunnel, VA
Status: Accepted (Oct 6 2011)
Units: Feet
Control Station:
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW2.91Mean Higher-High Water
MHW2.68Mean High Water
MTL1.40Mean Tide Level
MSL1.42Mean Sea Level
DTL1.46Mean Diurnal Tide Level
MLW0.13Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-25.27Station Datum
GT2.90Great Diurnal Range
MN2.55Mean Range of Tide
DHQ0.23Mean Diurnal High Water Inequality
DLQ0.12Mean Diurnal Low Water Inequality
HWI0.65Greenwich High Water Interval (in hours)
LWI6.84Greenwich Low Water Interval (in hours)
Max Tide7.56Highest Observed Tide
Max Tide Date & Time11/12/2009 22:30Highest Observed Tide Date & Time
Min Tide-2.93Lowest Observed Tide
Min Tide Date & Time01/11/1978 08:36Lowest Observed Tide Date & Time
HAT3.89Highest Astronomical Tide
HAT Date & Time10/16/1989 13:48HAT Date and Time
LAT-0.81Lowest Astronomical Tide
LAT Date & Time01/21/1996 07:12LAT 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 8638863 Chesapeake Bay Bridge Tunnel, VA

Revised: 08/08/2018
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