Datums for 9418767, North Spit CA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9418767, North Spit, CA
Status: Superseded (Apr 17 2003) (Accepted Jun 29 1998)
Units: Feet
Control Station: 9419750 Crescent City, CA
T.M.: 0
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW6.93Mean Higher-High Water
MHW6.24Mean High Water
MTL3.74Mean Tide Level
MSL3.75Mean Sea Level
DTL3.46Mean Diurnal Tide Level
MLW1.25Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-14.39Station Datum
GT6.93Great Diurnal Range
MN4.99Mean Range of Tide
DHQ0.70Mean Diurnal High Water Inequality
DLQ1.25Mean Diurnal Low Water Inequality
HWI7.64Greenwich High Water Interval (in hours)
LWI1.28Greenwich Low Water Interval (in hours)
Max Tide10.04Highest Observed Tide
Max Tide Date & Time12/31/2005 18:54Highest Observed Tide Date & Time
Min Tide-2.74Lowest Observed Tide
Min Tide Date & Time01/20/1988 02:18Lowest Observed Tide Date & Time
HAT8.89Highest Astronomical Tide
HAT Date & Time12/23/2003 18:48HAT Date and Time
LAT-2.35Lowest Astronomical Tide
LAT Date & Time06/04/2008 14:00LAT Date and Time
Tidal Datum Analysis Periods
01/01/1979 - 12/31/1980
01/01/1982 - 12/31/1989




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