Datums for 9451805, Scraggy Island AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9451805, Scraggy Island, AK
Status: Superseded (Apr 17 2003) (Accepted Aug 20 2002)
Units: Feet
Control Station: 9451600 Sitka, AK
T.M.: 135
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW9.99Mean Higher-High Water
MHW9.14Mean High Water
MTL5.32Mean Tide Level
MSL5.29Mean Sea Level
DTL4.99Mean Diurnal Tide Level
MLW1.49Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND0.08Station Datum
GT9.98Great Diurnal Range
MN7.65Mean Range of Tide
DHQ0.84Mean Diurnal High Water Inequality
DLQ1.49Mean Diurnal Low Water Inequality
HWI9.54Greenwich High Water Interval (in hours)
LWI3.26Greenwich 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
HAT12.91Highest Astronomical Tide
HAT Date & Time12/05/2025 21:06HAT Date and Time
LAT-3.29Lowest Astronomical Tide
LAT Date & Time06/04/2008 16:06LAT Date and Time
Tidal Datum Analysis Periods
04/03/2002 - 05/26/2002




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