Datums for 9447973, NAS Whidbey Island


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9447973, NAS Whidbey Island
Status: Accepted (Nov 7 2016)
Units: Feet
Control Station: 9449880 Friday Harbor, WA
T.M.: 120
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW7.44Mean Higher-High Water
MHW6.81Mean High Water
MTL4.50Mean Tide Level
MSL4.44Mean Sea Level
DTL3.71Mean Diurnal Tide Level
MLW2.19Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD880.33North American Vertical Datum of 1988
STND-34.28Station Datum
GT7.44Great Diurnal Range
MN4.63Mean Range of Tide
DHQ0.62Mean Diurnal High Water Inequality
DLQ2.19Mean Diurnal Low Water Inequality
HWI11.97Greenwich High Water Interval (in hours)
LWI5.58Greenwich 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
06/01/2016 - 08/31/2016




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