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Current Datum Value: 1.62

Datums for 9445478, UNION, HOOD CANAL WA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9445478, UNION, HOOD CANAL, WA
Status: Accepted (Jul 28 2004)
Units: Feet
Control Station: 9447130 Seattle, WA
T.M.: 120
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW11.85Mean Higher-High Water
MHW10.87Mean High Water
MTL6.94Mean Tide Level
MSL6.96Mean Sea Level
DTL5.93Mean Diurnal Tide Level
MLW3.01Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD882.84North American Vertical Datum of 1988
STND-1.62Station Datum
GT11.85Great Diurnal Range
MN7.85Mean Range of Tide
DHQ0.99Mean Diurnal High Water Inequality
DLQ3.01Mean Diurnal Low Water Inequality
HWI0.43Greenwich High Water Interval (in hours)
LWI6.82Greenwich 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
HAT14.29Highest Astronomical Tide
HAT Date & Time01/01/1987 14:36HAT Date and Time
LAT-4.62Lowest Astronomical Tide
LAT Date & Time06/22/1986 18:30LAT Date and Time
Tidal Datum Analysis Periods
06/01/1977 - 09/30/1977
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 9445478 UNION, HOOD CANAL, WA

Revised: 08/08/2018
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