Datums for 9448682, Swinomish WA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9448682, Swinomish, WA
Status: Accepted (Nov 29 2016)
Units: Feet
Control Station: 9449424 Cherry Point, WA
T.M.: 120
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW8.73Mean Higher-High Water
MHW7.94Mean High Water
MTL5.22Mean Tide Level
MSL5.04Mean Sea Level
DTL4.37Mean Diurnal Tide Level
MLW2.50Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-24.88Station Datum
GT8.74Great Diurnal Range
MN5.44Mean Range of Tide
DHQ0.79Mean Diurnal High Water Inequality
DLQ2.50Mean Diurnal Low Water Inequality
HWI0.54Greenwich High Water Interval (in hours)
LWI6.91Greenwich Low Water Interval (in hours)
Max Tide11.14Highest Observed Tide
Max Tide Date & Time03/10/2016 13:48Highest Observed Tide Date & Time
Min Tide-2.40Lowest Observed Tide
Min Tide Date & Time07/04/2016 18:12Lowest Observed Tide Date & Time
HAT10.66Highest Astronomical Tide
HAT Date & Time01/01/1987 15:30HAT Date and Time
LAT-4.09Lowest Astronomical Tide
LAT Date & Time06/22/1986 18:54LAT Date and Time
Tidal Datum Analysis Periods
08/01/2015 - 07/31/2016




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