Datums for 8638901, CBBT, Chesapeake Channel VA


NOTICE OF PROVISIONAL DATUM These datums and any data referred to said datum are PROVISIONAL and subject to revision until they have been thoroughly reviewed and received final approval. Subsequent review based on field inspections and additional measurements may result in revisions to the data and datums. Data users are cautioned to consider the conditional nature of this information before using it for critical decisions such as those that concern physical or public safety. Only after meeting all standards for quality control assurance will the datums be classified as Accepted Datums.
NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8638901, CBBT, Chesapeake Channel, VA
Status: Accepted (Oct 20 2017)
Units: Feet
Control Station: 8638610 Sewells Point, VA
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW3.03Mean Higher-High Water
MHW2.78Mean High Water
MTL1.46Mean Tide Level
MSL1.48Mean Sea Level
DTL1.51Mean Diurnal Tide Level
MLW0.13Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-4.28Station Datum
GT3.02Great Diurnal Range
MN2.65Mean Range of Tide
DHQ0.25Mean Diurnal High Water Inequality
DLQ0.12Mean Diurnal Low Water Inequality
HWI0.66Greenwich High Water Interval (in hours)
LWI6.94Greenwich Low Water Interval (in hours)
Max Tide6.41Highest Observed Tide
Max Tide Date & Time09/06/2019 19:12Highest Observed Tide Date & Time
Min Tide-1.49Lowest Observed Tide
Min Tide Date & Time01/06/2018 23:30Lowest 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
05/01/2017 - 06/30/2017
09/01/2017 - 09/30/2017




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