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Datums for 9431647, Port Orford OR


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9431647, Port Orford, OR
Status: Accepted (Sep 22 2011)
Units: Feet
Control Station: 9419750 Crescent City, CA
T.M.: 120
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW7.28Mean Higher-High Water
MHW6.57Mean High Water
MTL3.97Mean Tide Level
MSL3.93Mean Sea Level
DTL3.64Mean Diurnal Tide Level
MLW1.36Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD880.49North American Vertical Datum of 1988
STND-23.05Station Datum
GT7.28Great Diurnal Range
MN5.21Mean Range of Tide
DHQ0.71Mean Diurnal High Water Inequality
DLQ1.36Mean Diurnal Low Water Inequality
HWI7.59Greenwich High Water Interval (in hours)
LWI1.27Greenwich Low Water Interval (in hours)
Max Tide11.49Highest Observed Tide
Max Tide Date & Time02/17/1978 19:06Highest Observed Tide Date & Time
Min Tide-3.21Lowest Observed Tide
Min Tide Date & Time01/12/2009 02:18Lowest Observed Tide Date & Time
HAT9.40Highest Astronomical Tide
HAT Date & Time12/12/1985 18:54HAT Date and Time
LAT-2.74Lowest Astronomical Tide
LAT Date & Time06/23/1986 14:42LAT Date and Time
Tidal Datum Analysis Periods
01/01/1982 - 12/31/1998
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 9431647 Port Orford, OR

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