Datums for 9451281, Blaquiere Point AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9451281, Blaquiere Point, AK
Status: Accepted (May 23 2025)
Units: Feet
Control Station: 9450460 Ketchikan, AK
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW15.16Mean Higher-High Water
MHW14.25Mean High Water
MTL7.71Mean Tide Level
MSL7.54Mean Sea Level
DTL7.58Mean Diurnal Tide Level
MLW1.17Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD882.78North American Vertical Datum of 1988
STND-13.52Station Datum
GT15.16Great Diurnal Range
MN13.09Mean Range of Tide
DHQ0.90Mean Diurnal High Water Inequality
DLQ1.17Mean Diurnal Low Water Inequality
HWI9.73Greenwich High Water Interval (in hours)
LWI3.62Greenwich 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
HAT19.16Highest Astronomical Tide
HAT Date & Time11/15/2016 22:06HAT Date and Time
LAT-4.39Lowest Astronomical Tide
LAT Date & Time11/25/2003 04:24LAT Date and Time
Tidal Datum Analysis Periods
06/01/2024 - 08/31/2024




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