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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: Feet
Control Station:
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW8.52Mean Higher-High Water
MHW7.84Mean High Water
MTL5.17Mean Tide Level
MSL5.00Mean Sea Level
DTL4.26Mean Diurnal Tide Level
MLW2.50Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-3.36Station Datum
GT8.52Great Diurnal Range
MN5.34Mean Range of Tide
DHQ0.68Mean Diurnal High Water Inequality
DLQ2.49Mean Diurnal Low Water Inequality
HWI12.34Greenwich High Water Interval (in hours)
LWI5.67Greenwich Low Water Interval (in hours)
Max Tide11.73Highest Observed Tide
Max Tide Date & Time12/10/1993 20:06Highest Observed Tide Date & Time
Min Tide-4.22Lowest Observed Tide
Min Tide Date & Time12/12/1985 22:06Lowest Observed Tide Date & Time
HAT9.99Highest Astronomical Tide
HAT Date & Time12/14/1985 15:18HAT Date and Time
LAT-3.98Lowest 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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