Datums for 9462808, Scotch Cap, Unimak Island, AK AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9462808, Scotch Cap, Unimak Island, AK, AK
Status: Accepted (Apr 19 2010)
Units: Feet
Control Station: 9459881 King Cove, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW6.18Mean Higher-High Water
MHW5.63Mean High Water
MTL3.62Mean Tide Level
MSL3.62Mean Sea Level
DTL3.09Mean Diurnal Tide Level
MLW1.62Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-2.49Station Datum
GT6.18Great Diurnal Range
MN4.00Mean Range of Tide
DHQ0.55Mean Diurnal High Water Inequality
DLQ1.62Mean Diurnal Low Water Inequality
HWI0.02Greenwich High Water Interval (in hours)
LWI6.09Greenwich 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
HAT8.33Highest Astronomical Tide
HAT Date & Time12/24/2026 23:06HAT Date and Time
LAT-2.55Lowest Astronomical Tide
LAT Date & Time06/15/2026 18:36LAT Date and Time
Tidal Datum Analysis Periods
05/01/2009 - 08/31/2009




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