Datums for 9449746, Waldron Island


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9449746, Waldron Island
Status: Accepted (Mar 13 2018)
Units: Feet
Control Station: 9449880 Friday Harbor, WA
T.M.: 120
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW8.42Mean Higher-High Water
MHW7.72Mean High Water
MTL5.04Mean Tide Level
MSL4.88Mean Sea Level
DTL4.21Mean Diurnal Tide Level
MLW2.35Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-21.44Station Datum
GT8.42Great Diurnal Range
MN5.37Mean Range of Tide
DHQ0.70Mean Diurnal High Water Inequality
DLQ2.35Mean Diurnal Low Water Inequality
HWI0.70Greenwich High Water Interval (in hours)
LWI6.79Greenwich 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
HAT10.31Highest Astronomical Tide
HAT Date & Time01/01/1987 15:36HAT Date and Time
LAT-3.91Lowest Astronomical Tide
LAT Date & Time06/22/1986 18:48LAT Date and Time
Tidal Datum Analysis Periods
08/01/2015 - 10/31/2015




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