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Datums for 9444900, Port Townsend WA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9444900, Port Townsend, WA
Status: Accepted (Apr 17 2003)
Units: Meters
Control Station:
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW2.596Mean Higher-High Water
MHW2.389Mean High Water
MTL1.574Mean Tide Level
MSL1.522Mean Sea Level
DTL1.298Mean Diurnal Tide Level
MLW0.760Mean Low Water
MLLW0.000Mean Lower-Low Water
NAVD88
STND-1.025Station Datum
GT2.597Great Diurnal Range
MN1.629Mean Range of Tide
DHQ0.208Mean Diurnal High Water Inequality
DLQ0.760Mean Diurnal Low Water Inequality
HWI12.340Greenwich High Water Interval (in hours)
LWI5.670Greenwich Low Water Interval (in hours)
Max Tide2.549Highest Observed Tide
Max Tide Date & Time12/10/1993 20:06Highest Observed Tide Date & Time
Min Tide-2.312Lowest Observed Tide
Min Tide Date & Time12/12/1985 22:06Lowest Observed Tide Date & Time
HAT3.044Highest Astronomical Tide
HAT Date & Time12/14/1985 15:18HAT Date and Time
LAT-1.214Lowest Astronomical Tide
LAT Date & Time06/22/1986 17:36LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 12/31/2001




Products available at 9444900 Port Townsend, WA

Revised: 10/15/2013
NOAA / National Ocean Service
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