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Datums for 8668227, JOHNSONS CREEK, HARBOR ISLAND SC


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8668227, JOHNSONS CREEK, HARBOR ISLAND, SC
Status: Accepted (Jun 2 2003)
Units: Feet
Control Station: 8665530 Charleston, Cooper River Entrance, SC
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW6.46Mean Higher-High Water
MHW6.07Mean High Water
MTL3.13Mean Tide Level
MSL3.26Mean Sea Level
DTL3.23Mean Diurnal Tide Level
MLW0.19Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD883.58North American Vertical Datum of 1988
STND-2.60Station Datum
GT6.47Great Diurnal Range
MN5.88Mean Range of Tide
DHQ0.39Mean Diurnal High Water Inequality
DLQ0.20Mean Diurnal Low Water Inequality
HWI0.56Greenwich High Water Interval (in hours)
LWI6.95Greenwich Low Water Interval (in hours)
Max Tide8.19Highest Observed Tide
Max Tide Date & Time11/02/1975 06:36Highest Observed Tide Date & Time
Min Tide-2.22Lowest Observed Tide
Min Tide Date & Time02/19/1976 17:12Lowest 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
03/01/1975 - 02/29/1976
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 8668227 JOHNSONS CREEK, HARBOR ISLAND, SC

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services