Datums for 8664699, North Charleston, Ashley River


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8664699, North Charleston, Ashley River
Status: Accepted (Dec 9 2022)
Units: Feet
Control Station: 8665530 Charleston, SC
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW6.41Mean Higher-High Water
MHW6.13Mean High Water
MTL3.18Mean Tide Level
MSL3.67Mean Sea Level
DTL3.21Mean Diurnal Tide Level
MLW0.22Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD883.56North American Vertical Datum of 1988
STND-22.66Station Datum
GT6.41Great Diurnal Range
MN5.91Mean Range of Tide
DHQ0.28Mean Diurnal High Water Inequality
DLQ0.23Mean Diurnal Low Water Inequality
HWI2.09Greenwich High Water Interval (in hours)
LWI7.85Greenwich 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
HAT8.30Highest Astronomical Tide
HAT Date & Time10/27/2007 14:54HAT Date and Time
LAT-1.22Lowest Astronomical Tide
LAT Date & Time01/14/2036 08:24LAT Date and Time
Tidal Datum Analysis Periods
03/01/2022 - 06/30/2022




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