Datums for 9446545, TACOMA WA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9446545, TACOMA, WA
Status: Accepted (Aug 6 2004)
Units: Feet
Control Station: 9447130 Seattle, WA
T.M.: 120
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW11.82Mean Higher-High Water
MHW10.94Mean High Water
MTL6.90Mean Tide Level
MSL6.88Mean Sea Level
DTL5.91Mean Diurnal Tide Level
MLW2.86Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD882.60North American Vertical Datum of 1988
STND-0.47Station Datum
GT11.83Great Diurnal Range
MN8.09Mean Range of Tide
DHQ0.88Mean Diurnal High Water Inequality
DLQ2.86Mean Diurnal Low Water Inequality
HWI0.48Greenwich High Water Interval (in hours)
LWI6.72Greenwich Low Water Interval (in hours)
Max TideHighest Observed Tide
Max Tide Date & Time Highest Observed Tide Date & Time
Min TideLowest Observed Tide
Min Tide Date & Time Lowest 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
07/01/1977 - 07/31/1977
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




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